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LAMPIRAN A FOTO WIRELESS SERVICE BELL LAMPIRAN B SKEMATIK WIRELESS SERVICE BELL -------------------------------------------------------------------------SKEMATIK TRANSMITTER .................................................................... B-1 SKEMATIK RECEIVER ............................................................................ B-2 -------------------------------------------------------------------------- SKEMATIK TRANSMITTER SKEMATIK RECEIVER LAMPIRAN C PROGRAM PADA PENGONTROL MIKRO ATMEGA16 /***************************************************** This program was produced by the CodeWizardAVR V1.25.3 Professional Automatic Program Generator © Copyright 1998-2007 Pavel Haiduc, HP InfoTech s.r.l. http://www.hpinfotech.com Project : Version : Date : 8/3/2010 Author : F4CG Company : F4CG Comments: Chip type : ATmega16 Program type : Application Clock frequency : 11.059200 MHz Memory model : Small External SRAM size : 0 Data Stack size : 256 *****************************************************/ #include <mega16.h> #include <delay.h> // Alphanumeric LCD Module functions #asm .equ __lcd_port=0x15 ;PORTC #endasm #include <lcd.h> #define RXB8 1 #define TXB8 0 #define UPE 2 #define OVR 3 #define FE 4 #define UDRE 5 #define RXC 7 #define FRAMING_ERROR (1<<FE) #define PARITY_ERROR (1<<UPE) #define DATA_OVERRUN (1<<OVR) #define DATA_REGISTER_EMPTY (1<<UDRE) #define RX_COMPLETE (1<<RXC) // USART Receiver buffer #define RX_BUFFER_SIZE 8 char rx_buffer[RX_BUFFER_SIZE]; #if RX_BUFFER_SIZE<256 unsigned char rx_wr_index,rx_rd_index,rx_counter; #else unsigned int rx_wr_index,rx_rd_index,rx_counter; #endif // This flag is set on USART Receiver buffer overflow bit rx_buffer_overflow; // USART Receiver interrupt service routine interrupt [USART_RXC] void usart_rx_isr(void) { char status,data; status=UCSRA; data=UDR; if ((status & (FRAMING_ERROR | PARITY_ERROR | DATA_OVERRUN))==0) { rx_buffer[rx_wr_index]=data; if (++rx_wr_index == RX_BUFFER_SIZE) rx_wr_index=0; if (++rx_counter == RX_BUFFER_SIZE) { rx_counter=0; rx_buffer_overflow=1; }; }; if(data=='R') /*program penanganan data interrupt yang diperoleh untuk mereset LCD*/ { lcd_clear(); } } #ifndef _DEBUG_TERMINAL_IO_ // Get a character from the USART Receiver buffer #define _ALTERNATE_GETCHAR_ #pragma used+ char getchar(void) { char data; while (rx_counter==0); data=rx_buffer[rx_rd_index]; if (++rx_rd_index == RX_BUFFER_SIZE) rx_rd_index=0; #asm("cli") --rx_counter; #asm("sei") return data; } #pragma used#endif // Standard Input/Output functions #include <stdio.h> // Declare your global variables here void main(void) { // Declare your local variables here // Input/Output Ports initialization // Port A initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTA=0x00; DDRA=0x00; // Port B initialization // Func7=Out Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out // State7=0 State6=0 State5=0 State4=0 State3=0 State2=0 State1=0 State0=0 PORTB=0x00; DDRB=0xFF; // Port C initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTC=0x00; DDRC=0x00; // Port D initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTD=0x00; DDRD=0x00; // Timer/Counter 0 initialization // Clock source: System Clock // Clock value: Timer 0 Stopped // Mode: Normal top=FFh // OC0 output: Disconnected TCCR0=0x00; TCNT0=0x00; OCR0=0x00; // Timer/Counter 1 initialization // Clock source: System Clock // Clock value: Timer 1 Stopped // Mode: Normal top=FFFFh // OC1A output: Discon. // OC1B output: Discon. // Noise Canceler: Off // Input Capture on Falling Edge // Timer 1 Overflow Interrupt: Off // Input Capture Interrupt: Off // Compare A Match Interrupt: Off // Compare B Match Interrupt: Off TCCR1A=0x00; TCCR1B=0x00; TCNT1H=0x00; TCNT1L=0x00; ICR1H=0x00; ICR1L=0x00; OCR1AH=0x00; OCR1AL=0x00; OCR1BH=0x00; OCR1BL=0x00; // Timer/Counter 2 initialization // Clock source: System Clock // Clock value: Timer 2 Stopped // Mode: Normal top=FFh // OC2 output: Disconnected ASSR=0x00; TCCR2=0x00; TCNT2=0x00; OCR2=0x00; // External Interrupt(s) initialization // INT0: Off // INT1: Off // INT2: Off MCUCR=0x00; MCUCSR=0x00; // Timer(s)/Counter(s) Interrupt(s) initialization TIMSK=0x00; // USART initialization // Communication Parameters: 8 Data, 1 Stop, No Parity // USART Receiver: On // USART Transmitter: On // USART Mode: Asynchronous // USART Baud rate: 9600 UCSRA=0x00; UCSRB=0x98; UCSRC=0x86; UBRRH=0x00; UBRRL=0x47; // Analog Comparator initialization // Analog Comparator: Off // Analog Comparator Input Capture by Timer/Counter 1: Off ACSR=0x80; SFIOR=0x00; // LCD module initialization lcd_init(16); // Global enable interrupts #asm("sei") while (1) { PORTB=0B11111110; /*program pengolah data pada receiver*/ if(PINA.4==1) if(PINA.7==1) { lcd_clear(); lcd_gotoxy(0,0); lcd_putsf("MEJA 1 BILL"); printf("MEJA 1 BILL "); } if(PINA.4==1) if(PINA.6==1) { lcd_clear(); lcd_gotoxy(0,0); lcd_putsf("MEJA 1 MENU"); printf("MEJA 1 MENU "); } delay_ms(100); PORTB=0B11111101; if(PINA.4==1) if(PINA.7==1) { lcd_clear(); lcd_gotoxy(0,0); lcd_putsf("MEJA 2 BILL"); printf("MEJA 2 BILL "); } if(PINA.4==1) if(PINA.6==1) { lcd_clear(); lcd_gotoxy(0,0); lcd_putsf("MEJA 2 MENU"); printf("MEJA 2 MENU "); } delay_ms(100); PORTB=0B11111011; if(PINA.4==1) if(PINA.7==1) { lcd_clear(); lcd_gotoxy(0,0); lcd_putsf("MEJA 3 BILL"); printf("MEJA 3 BILL "); } if(PINA.4==1) if(PINA.6==1) { lcd_clear(); lcd_gotoxy(0,0); lcd_putsf("MEJA 3 MENU"); printf("MEJA 3 MENU "); } delay_ms(100); if (PINA.5==0) { lcd_clear(); } }; } LAMPIRAN D PROGRAM INTERFACING VB6 Dim x As String /*menetukan tipe data dari variabel x sebagai string*/ Private Sub Command1_Click() /*program penghentian sistem bila button exit di klik*/ MSComm1.PortOpen = False Unload Me End Sub Private Sub Form_Load() /*program pengaktifan komunikasi serial*/ MSComm1.CommPort = 1 MSComm1.Settings = "9600,n,8,1" MSComm1.PortOpen = True List1.Clear End Sub Private Sub Image10_Click() /*program peresetan dan pengiriman interrupt ketika image10 diklik*/ Image3.Visible = False Image2.Visible = False Image1.Visible = True Image10.Visible = False Text4.Visible = False Text5.Visible = False Timer2.Enabled = False Timer3.Enabled = False MSComm1.Output = "R" End Sub Private Sub Image11_Click() /*program peresetan dan pengiriman interrupt ketika image11 diklik*/ Image5.Visible = False Image6.Visible = False Image4.Visible = True Image11.Visible = False Text6.Visible = False Text7.Visible = False Timer4.Enabled = False Timer5.Enabled = False MSComm1.Output = "R" End Sub Private Sub Image12_Click() /*program peresetan dan pengiriman interrupt ketika image12 diklik*/ Image8.Visible = False Image9.Visible = False Image7.Visible = True Image12.Visible = False Text8.Visible = False Text9.Visible = False Timer6.Enabled = False Timer7.Enabled = False MSComm1.Output = "R" End Sub Private Sub Timer1_Timer() /*program penerimaan, pengecekan data, & pengaturan tampilannya*/ x = MSComm1.Input If Len(x) > 0 Then If Left(x, 11) = "MEJA 1 BILL" Then Image2.Visible = True Image1.Visible = False Timer2.Enabled = True Image10.Visible = True Text4.Visible = True Text5.Visible = False End If If Left(x, 11) = "MEJA 1 MENU" Then Image2.Visible = True Image1.Visible = False Timer2.Enabled = True Image10.Visible = True Text5.Visible = True Text4.Visible = False End If If Left(x, 11) = "MEJA 2 BILL" Then Image5.Visible = True Image4.Visible = False Timer4.Enabled = True Image11.Visible = True Text6.Visible = True Text7.Visible = False End If If Left(x, 11) = "MEJA 2 MENU" Then Image5.Visible = True Image4.Visible = False Timer4.Enabled = True Image11.Visible = True Text7.Visible = True Text6.Visible = False End If If Left(x, 11) = "MEJA 3 BILL" Then Image8.Visible = True Image7.Visible = False Timer6.Enabled = True Image12.Visible = True Text8.Visible = True Text9.Visible = False End If If Left(x, 11) = "MEJA 3 MENU" Then Image8.Visible = True Image7.Visible = False Timer6.Enabled = True Image12.Visible = True Text9.Visible = True Text8.Visible = False End If List1.AddItem (x & Format$(Time, "hh:mm:ss AM/PM")) End If End Sub Private Sub Timer2_Timer() /*program membuat image3 berkedip dengan selang waktu tertentu*/ Image3.Visible = True Timer2.Enabled = False Timer3.Enabled = True End Sub Private Sub Timer3_Timer() Image3.Visible = False Timer2.Enabled = True Timer3.Enabled = False End Sub Private Sub Timer4_Timer() /*program membuat image6 berkedip dengan selang waktu tertentu*/ Image6.Visible = True Timer4.Enabled = False Timer5.Enabled = True End Sub Private Sub Timer5_Timer() Image6.Visible = False Timer5.Enabled = False Timer4.Enabled = True End Sub Private Sub Timer6_Timer() /*program membuat image9 berkedip dengan selang waktu tertentu*/ Image9.Visible = True Timer6.Enabled = False Timer7.Enabled = True End Sub Private Sub Timer7_Timer() Image9.Visible = False Timer7.Enabled = False Timer6.Enabled = True End Sub LAMPIRAN E DATASHEET -------------------------------------------------------------------------IC HT12D (DECODER) ............................................................................ E-1 IC HT12E (ENCODER) ............................................................................. E-10 MODUL RF TLP-RLP 315 ........................................................................ E-23 IC 74LS04 (INVERTER) ........................................................................... E-24 IC NE555 (CLOCK) .................................................................................. E-26 IC MAX232 (TRANSCEIVER) ................................................................ E-36 -------------------------------------------------------------------------- 212 Series of Decoders Features · · · · · · · · Operating voltage: 2.4V~12V Low power and high noise immunity CMOS technology Low standby current Capable of decoding 12 bits of information 12 Pair with Holtek¢s 2 series of encoders Binary address setting Received codes are checked 3 times · Address/Data number combination - HT12D: 8 address bits and 4 data bits - HT12F: 12 address bits only Built-in oscillator needs only 5% resistor Valid transmission indicator Easy interface with an RF or an infrared transmission medium Minimal external components · · · · Car alarm system Security system Cordless telephones Other remote control systems · · · Applications · · · · Burglar alarm system Smoke and fire alarm system Garage door controllers Car door controllers General Description 12 their local addresses. If no error or unmatched codes are found, the input data codes are decoded and then transferred to the output pins. The VT pin also goes high to indicate a valid transmission. The 2 decoders are a series of CMOS LSIs for remote control system applications. They are 12 paired with Holtek¢s 2 series of encoders (refer to the encoder/decoder cross reference tabl e ). F o r p r o p e r o p e r at i o n, a p ai r o f encoder/decoder with the same number of addresses and data format should be chosen. 12 The 2 series of decoders are capable of decoding informations that consist of N bits of address and 12-N bits of data. Of this series, the HT12D is arranged to provide 8 address bits and 4 data bits, and HT12F is used to decode 12 bits of address information. The decoders receive serial addresses and data 12 from a programmed 2 series of encoders that are transmitted by a carrier using an RF or an IR transmission medium. They compare the serial input data three times continuously with Selection Table Function Address No. Part No. Data No. Type VT Oscillator Trigger Package HT12D 8 4 L Ö RC oscillator DIN active ²Hi² 18 DIP/20 SOP HT12F 12 0 ¾ Ö RC oscillator DIN active ²Hi² 18 DIP/20 SOP Notes: Data type: L stands for latch type data output. VT can be used as a momentary data output. 1 July 12, 1999 212 Series of Decoders Block Diagram O S C 2 O S C 1 D iv id e r O s c illa to r B u ffe r D IN D a ta S h ift R e g is te r L a tc h C ir c u it C o m p a ra to r C o n tr o l L o g ic D a ta D a ta D e te c to r S y n c . D e te c to r C o m p a ra to r T r a n s m is s io n G a te C ir c u it B u ffe r A d d re s s V D D V T V S S Note: The address/data pins are available in various combinations (see the address/data table). Pin Assignment 8 -A d d re s s 4 -D a ta 8 -A d d re s s 4 -D a ta 1 2 -A d d re s s 0 -D a ta 1 2 -A d d re s s 0 -D a ta N C 1 2 0 N C N C 1 2 0 N C A 0 1 1 8 V D D A 0 2 1 9 V D D A 0 1 1 8 V D D A 0 2 1 9 V D D A 1 2 1 7 V T A 1 3 1 8 V T A 1 2 1 7 V T A 1 3 1 8 V T A 2 3 1 6 O S C 1 A 2 4 1 7 O S C 1 A 2 3 1 6 O S C 1 A 2 4 1 7 O S C 1 A 3 4 1 5 O S C 2 A 3 5 1 6 O S C 2 A 3 4 1 5 O S C 2 A 3 5 1 6 O S C 2 A 4 5 1 4 D IN A 4 6 1 5 D IN A 4 5 1 4 D IN A 4 6 1 5 D IN A 5 6 1 3 D 1 1 A 5 7 1 4 D 1 1 A 5 6 1 3 A 1 1 A 5 7 1 4 A 1 1 A 6 7 1 2 D 1 0 A 6 8 1 3 D 1 0 A 6 7 1 2 A 1 0 A 6 8 1 3 A 1 0 A 7 8 1 1 D 9 A 7 9 1 2 D 9 A 7 8 1 1 A 9 A 7 9 1 2 A 9 V S S 9 1 0 D 8 V S S 1 0 1 1 D 8 V S S 9 1 0 A 8 V S S 1 0 1 1 A 8 H T 1 2 D 1 8 D IP H T 1 2 D 2 0 S O P H T 1 2 F 1 8 D IP 2 H T 1 2 F 2 0 S O P July 12, 1999 212 Series of Decoders Pin Description Pin Name I/O Internal Connection Description NMOS Input pins for address A0~A11 setting TRANSMISSION They can be externally set to VDD or VSS. GATE A0~A11 I D8~D11 O CMOS OUT DIN I CMOS IN VT O CMOS OUT OSC1 I OSCILLATOR Oscillator input pin OSC2 O OSCILLATOR Oscillator output pin VSS I ¾ Negative power supply (GND) VDD I ¾ Positive power supply Output data pins Serial data input pin Valid transmission, active high Approximate internal connection circuits N M O S T R A N S M IS S IO N G A T E C M O S O U T C M O S IN O S C IL L A T O R E N O S C 1 O S C 2 Absolute Maximum Ratings Supply Voltage...............................-0.3V to 13V Storage Temperature.................-50°C to 125°C Input Voltage....................VSS-0.3 to VDD+0.3V Operating Temperature ..............-20°C to 75°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. 3 July 12, 1999 212 Series of Decoders Electrical Characteristics Symbol Parameter Ta=25°C Test Conditions VDD Conditions ¾ ¾ Min. Typ. Max. Unit 2.4 5 12 V ¾ 0.1 1 mA ¾ 2 4 mA VDD Operating Voltage ISTB Standby Current IDD Operating Current 5V No load fOSC=150kHz ¾ 200 400 mA Data Output Source Current (D8~D11) 5V VOH=4.5V -1 -1.6 ¾ mA Data Output Sink Current (D8~D11) 5V VOL=0.5V 1 1.6 ¾ mA VOH=4.5V -1 -1.6 ¾ mA VOL=0.5V 1 1.6 ¾ mA IO IVT VT Output Source Current VT Output Sink Current 5V 12V 5V Oscillator stops VIH ²H² Input Voltage 5V ¾ 3.5 ¾ 5 V VIL ²L² Input Voltage 5V ¾ 0 ¾ 1 V fOSC Oscillator Frequency 5V ¾ 150 ¾ kHz ROSC=51kW 4 July 12, 1999 212 Series of Decoders Functional Description Flowchart Operation 12 The oscillator is disabled in the standby state and activated when a logic ²high² signal applies to the DIN pin. That is to say, the DIN should be kept low if there is no signal input. The 2 series of decoders provides various combinations of addresses and data pins in differ12 ent packages so as to pair with the 2 series of encoders. The decoders receive data that are transmitted by an encoder and interpret the first N bits of code period as addresses and the last 12-N bits as data, where N is the address code number. A signal on the DIN pin activates the oscillator which in turn decodes the incoming address and data. The decoders will then check the received address three times continuously. If the received address codes all match the contents of the decoder¢s local address, the 12-N bits of data are decoded to activate the output pins and the VT pin is set high to indicate a valid transmission. This will last unless the address code is incorrect or no signal is received. P o w e r o n S ta n d b y m o d e N o Y e s A d d r e s s b its m a tc h e d ? S to re d a ta M a tc h p r e v io u s s to r e d d a ta ? Output type 12 Of the 2 series of decoders, the HT12F has no data output pin but its VT pin can be used as a momentary data output. The HT12D, on the other hand, provides 4 latch type data pins whose data remain unchanged until new data are received. 8 Latch 2.4V~12V HT12F 0 12 ¾ 2.4V~12V N o Y e s N o 3 tim e s o f c h e c k in g c o m p le te d ? Y e s L a tc h d a ta to o u tp u t & a c tiv a te V T Part Data Address Output Operating No. Pins Pins Type Voltage 4 N o Y e s The output of the VT pin is high only when the transmission is valid. Otherwise it is always low. HT12D D is a b le V T & ig n o r e th e r e s t o f th is w o r d C o d e in ? N o A d d re s s o r d a ta e rro r ? Y e s 5 July 12, 1999 212 Series of Decoders Decoder timing E n c o d e r T r a n s m is s io n E n a b le < 1 w o rd E n c o d e r D O U T T r a n s m itte d C o n tin u o u s ly 4 w o rd s 2 1 4 4 w o rd s c lo c k s 2 1 4 c lo c k s D e c o d e r V T c h e c k c h e c k L a tc h e d D a ta O u t Encoder/Decoder cross reference table Package Decoders Part No. Data Pins Address Pins VT Pair Encoder HT12D 4 8 Ö HT12F 0 12 Ö Encoder DIP SOP HT12A 18 20 HT12E 18 20 HT12A 18 20 HT12E 18 20 Decoder DIP SOP 18 20 18 20 Address/Data sequence 12 The following table provides address/data sequence for various models of the 2 series of decoders. A correct device should be chosen according to the requirements of the individual addresses and data. Part No. Address/Data Bits 0 1 2 3 4 5 6 7 8 9 10 11 HT12D A0 A1 A2 A3 A4 A5 A6 A7 D8 D9 D10 D11 HT12F A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 6 July 12, 1999 212 Series of Decoders Oscillator frequency vs supply voltage fo s c (S c a le ) R o s c (W ) 4 .0 0 2 7 k 3 .5 0 3 0 k 3 3 k 3 .0 0 3 6 k 3 9 k 4 3 k 2 .5 0 4 7 k 5 1 k 5 6 k 2 .0 0 6 2 k 6 8 k 7 5 k 1 .5 0 8 2 k 1 0 0 k 1 2 0 k (1 0 0 k H z )1 .0 0 1 5 0 k 1 8 0 k 2 2 0 k 0 .5 0 0 .2 5 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 V D D (V D C ) The recommended oscillator frequency is fOSCD (decoder) @ 50 fOSCE (HT12E encoder) 1 @ fOSCE (HT12A encoder). 3 7 July 12, 1999 212 Series of Decoders Application Circuits R e c e iv e r C ir c u it 1 2 3 4 5 6 7 8 9 A 0 V D D A 1 V T A 2 O S C 1 A 3 O S C 2 A 4 D IN A 5 D 1 1 A 6 D 1 0 A 7 D 9 V S S D 8 R e c e iv e r C ir c u it 1 8 V D D 1 2 1 7 3 1 6 1 5 R O S C 4 1 4 5 1 3 6 1 2 7 1 1 8 1 0 9 H T 1 2 D V D D 1 8 A 0 V D D A 1 V T A 2 O S C 1 A 3 O S C 2 A 4 D IN A 5 A 1 1 A 6 A 1 0 1 2 A 7 A 9 1 1 V S S A 8 1 0 1 7 1 6 1 5 R O S C 1 4 1 3 H T 1 2 F Notes: Typical infrared receiver: PIC-12043T/PIC-12043S (KODESHI CORP.) or LTM9052 (LITEON CORP.) Typical RF receiver: JR-200 (JUWA CORP.) RE-99 (MING MICROSYSTEM, U.S.A.) 8 July 12, 1999 212 Series of Decoders Holtek Semiconductor Inc. (Headquarters) No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189 Holtek Semiconductor Inc. (Taipei Office) 5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C. Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Microelectronics Enterprises Ltd. RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Copyright ã 1999 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. 9 July 12, 1999 This datasheet has been downloaded from: www.DatasheetCatalog.com Datasheets for electronic components. 2 12 HT12A/HT12E Series of Encoders Features · · · · Operating voltage - 2.4V~5V for the HT12A - 2.4V~12V for the HT12E Low power and high noise immunity CMOS technology Low standby current: 0.1mA (typ.) at VDD=5V HT12A with a 38kHz carrier for infrared transmission medium · · · · Minimum transmission word - Four words for the HT12E - One word for the HT12A Built-in oscillator needs only 5% resistor Data code has positive polarity Minimal external components HT12A/E: 18-pin DIP/20-pin SOP package · · · · Car alarm system Security system Cordless telephones Other remote control systems · Applications · · · · Burglar alarm system Smoke and fire alarm system Garage door controllers Car door controllers General Description The 212 encoders are a series of CMOS LSIs for remote control system applications. They are capable of encoding information which consists of N address bits and 12-N data bits. Each address/data input can be set to one of the two logic states. The programmed addresses/data are transmitted together with the header bits via an RF or an infrared transmission medium upon receipt of a trigger signal. The capability to select a TE trigger on the HT12E or a DATA trigger on the HT12A further enhances the application flexibility of the 212 series of encoders. The HT12A additionally provides a 38kHz carrier for infrared systems. Selection Table Function Address Address/ Data Oscillator No. Data No. No. Part No. Trigger Package Carrier Output Negative Polarity HT12A 8 0 4 455kHz resonator D8~D11 18 DIP 20 SOP 38kHz No HT12E 8 4 0 RC oscillator TE 18 DIP 20 SOP No No Note: Address/Data represents pins that can be address or data according to the decoder requirement. 1 April 11, 2000 HT12A/HT12E Block Diagram TE trigger HT12E O S C 2 O S C 1 O s c illa to r T E A 0 1 2 T r a n s m is s io n G a te C ir c u it A 7 D a ta S e le c t & B u ffe r ¸ 3 D iv id e r D O U T S y n c . C ir c u it ¸ 1 2 C o u n te r & 1 o f 1 2 D e c o d e r B in a r y D e te c to r A D 8 A D 1 1 V D D V S S DATA trigger HT12A X 2 X 1 O s c illa to r D a ta S e le c t & B u ffe r ¸ 5 7 6 D iv id e r D O U T L /M B A 0 1 2 T r a n s m is s io n G a te C ir c u it A 7 S y n c . C ir c u it ¸ 1 2 C o u n te r & 1 o f 1 2 D e c o d e r B in a r y D e te c to r D 8 D 1 1 V D D V S S Note: The address data pins are available in various combinations (refer to the address/data table). 2 April 11, 2000 HT12A/HT12E Pin Assignment 8 -A d d re s s 4 -D a ta 8 -A d d re s s 4 -D a ta 8 -A d d re s s 4 -A d d r e s s /D a ta 8 -A d d re s s 4 -A d d r e s s /D a ta N C 1 2 0 N C N C 1 2 0 N C A 0 1 1 8 V D D A 0 2 1 9 V D D A 0 1 1 8 V D D A 0 2 1 9 V D D A 1 2 1 7 D O U T A 1 3 1 8 D O U T A 1 2 1 7 D O U T A 1 3 1 8 D O U T A 2 3 1 6 X 1 A 2 4 1 7 X 1 A 2 3 1 6 O S C 1 A 2 4 1 7 O S C 1 A 3 4 1 5 X 2 A 3 5 1 6 X 2 A 3 4 1 5 O S C 2 A 3 5 1 6 O S C 2 A 4 5 1 4 L /M B A 4 6 1 5 L /M B A 4 5 1 4 T E A 4 6 1 5 T E A 5 6 1 3 D 1 1 A 5 7 1 4 D 1 1 A 5 6 1 3 A D 1 1 A 5 7 1 4 A D 1 1 A 6 7 1 2 D 1 0 A 6 8 1 3 D 1 0 A 6 7 1 2 A D 1 0 A 6 8 1 3 A D 1 0 A 7 8 1 1 D 9 A 7 9 1 2 D 9 A 7 8 1 1 A D 9 A 7 9 1 2 A D 9 V S S 9 1 0 D 8 V S S 1 0 1 1 D 8 V S S 9 1 0 A D 8 V S S 1 0 1 1 A D 8 H T 1 2 A 2 0 S O P H T 1 2 A 1 8 D IP H T 1 2 E 1 8 D IP H T 1 2 E 2 0 S O P Pin Description Pin Name I/O Internal Connection Description CMOS IN Pull-high (HT12A) A0~A7 AD8~AD11 I I NMOS Input pins for address A0~A7 setting TRANSMISSION These pins can be externally set to VSS or left open GATE PROTECTION DIODE (HT12E) NMOS TRANSMISSION Input pins for address/data AD8~AD11 setting GATE PROTECTION These pins can be externally set to VSS or left open DIODE (HT12E) D8~D11 I CMOS IN Pull-high DOUT O CMOS OUT L/MB I CMOS IN Pull-high Input pins for data D8~D11 setting and transmission enable, active low These pins should be externally set to VSS or left open (see Note) Encoder data serial transmission output Latch/Momentary transmission format selection pin: Latch: Floating or VDD Momentary: VSS 3 April 11, 2000 HT12A/HT12E I/O Internal Connection TE I CMOS IN Pull-high OSC1 I OSCILLATOR 1 Oscillator input pin OSC2 O OSCILLATOR 1 Oscillator output pin X1 I OSCILLATOR 2 455kHz resonator oscillator input X2 O OSCILLATOR 2 455kHz resonator oscillator output VSS I ¾ Negative power supply, grounds VDD I ¾ Positive power supply Pin Name Description Transmission enable, active low (see Note) Note: D8~D11 are all data input and transmission enable pins of the HT12A. TE is a transmission enable pin of the HT12E. Approximate internal connections N M O S T R A N S M IS S IO N G A T E C M O S IN P u ll- h ig h C M O S O U T O S C IL L A T O R 1 E N O S C 1 N M O S T R A N S M IS S IO N G A T E P R O T E C T IO N D IO D E O S C IL L A T O R 2 X 1 O S C 2 X 2 V D D Absolute Maximum Ratings Supply Voltage (HT12A) ..............-0.3V to 5.5V Supply Voltage (HT12E) ...............-0.3V to 13V Input Voltage....................VSS-0.3 to VDD+0.3V Storage Temperature.................-50°C to 125°C Operating Temperature...............-20°C to 75°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. 4 April 11, 2000 HT12A/HT12E Electrical Characteristics Ta=25°C HT12A Symbol Parameter VDD Operating Voltage ISTB Standby Current IDD IDOUT Operating Current Output Drive Current Test Conditions Min. Typ. Max. Unit 2.4 3 5 V ¾ 0.1 1 mA ¾ 0.1 1 mA No load fOSC=455kHz ¾ 200 400 mA ¾ 400 800 mA VOH=0.9VDD (Source) -1 -1.6 ¾ mA VOL=0.1VDD (Sink) 2 3.2 ¾ mA VDD Conditions ¾ ¾ 3V 5V 3V 5V 5V Oscillator stops VIH ²H² Input Voltage ¾ ¾ 0.8VDD ¾ VDD V VIL ²L² Input Voltage ¾ ¾ 0 ¾ 0.2VDD V RDATA D8~D11 Pull-high Resistance 5V ¾ 150 300 kW VDATA=0V Ta=25°C HT12E Symbol Parameter VDD Operating Voltage ISTB Standby Current IDD IDOUT Operating Current Output Drive Current Test Conditions Min. Typ. Max. Unit 2.4 5 12 V ¾ 0.1 1 mA ¾ 2 4 mA ¾ 40 80 mA ¾ 150 300 mA VOH=0.9VDD (Source) -1 -1.6 ¾ mA VOL=0.1VDD (Sink) 1 1.6 ¾ mA VDD Conditions ¾ ¾ 3V 12V Oscillator stops 3V No load 12V fOSC=3kHz 5V VIH ²H² Input Voltage ¾ ¾ 0.8VDD ¾ VDD V VIL ²L² Input Voltage ¾ ¾ 0 ¾ 0.2VDD V fOSC Oscillator Frequency 5V ROSC=1.1MW ¾ 3 ¾ kHz RTE TE Pull-high Resistance 5V VTE=0V ¾ 1.5 3 MW 5 April 11, 2000 HT12A/HT12E Functional Description Operation The 212 series of encoders begin a 4-word transmission cycle upon receipt of a transmission enable (TE for the HT12E or D8~D11 for the HT12A, active low). This cycle will repeat itself as long as the transmission enable (TE or D8~D11) is held low. Once the transmission enable returns high the encoder output completes its final cycle and then stops as shown below. T E < 1 w o rd E n c o d e r D O U T T r a n s m itte d C o n tin u o u s ly 4 w o rd s 4 w o rd s Transmission timing for the HT12E D 8 ~ D 1 1 K e y - in < 1 w o rd E n c o d e r D O U T w ith 3 8 k H z c a r r ie r T r a n s m itte d C o n tin u o u s ly 1 w o rd 1 w o rd Transmission timing for the HT12A (L/MB=Floating or VDD) D 8 ~ D 1 1 K e y - in ( a ll d a ta = 1 ) 7 w o rd s < 1 w o rd E n c o d e r D O U T T r a n s m itte d C o n tin u o u s ly 7 w o rd s 1 w o rd ( a ll d a ta = 1 ) 1 w o rd Transmission timing for the HT12A (L/MB=VSS) 6 April 11, 2000 HT12A/HT12E Information word If L/MB=1 the device is in the latch mode (for use with the latch type of data decoders). When the transmission enable is removed during a transmission, the DOUT pin outputs a complete word and then stops. On the other hand, if L/MB=0 the device is in the momentary mode (for use with the momentary type of data decoders). When the transmission enable is removed during a transmission, the DOUT outputs a complete word and then adds 7 words all with the ²1² data code. An information word consists of 4 periods as illustrated below. 1 /3 b it s y n c . p e r io d a d d r e s s c o d e p e r io d p ilo t p e r io d ( 1 2 b its ) d a ta c o d e p e r io d Composition of information Address/data waveform Each programmable address/data pin can be externally set to one of the following two logic states as shown below. fO S C "O n e " "Z e ro " A d d re s s / D a ta B it Address/Data bit waveform for the HT12E fO S C 3 8 k H z c a r r ie r "O n e " D a ta B it "Z e ro " D a ta B it "O n e " A d d r e s s B it "Z e ro " A d d r e s s B it Address/Data bit waveform for the HT12A 7 April 11, 2000 HT12A/HT12E The address/data bits of the HT12A are transmitted with a 38kHz carrier for infrared remote controller flexibility. Address/data programming (preset) The status of each address/data pin can be individually pre-set to logic ²high² or ²low². If a transmission-enable signal is applied, the encoder scans and transmits the status of the 12 bits of address/data serially in the order A0 to AD11 for the HT12E encoder and A0 to D11 for the HT12A encoder. During information transmission these bits are transmitted with a preceding synchronization bit. If the trigger signal is not applied, the chip enters the standby mode and consumes a reduced current of less than 1mA for a supply voltage of 5V. Usual applications preset the address pins with individual security codes using DIP switches or PCB wiring, while the data is selected by push buttons or electronic switches. The following figure shows an application using the HT12E: O S C 1 O S C 2 D O U T V D D V A 0 A 1 A 2 A 3 A 4 A 5 A 6 A 7 V S S T E A D 8 T r a n s m is s io n m e d iu m A D 9 A D 1 0 A D 1 1 D D V S S The transmitted information is as shown: Pilot & Sync. A0 A1 A2 A3 A4 A5 A6 A7 AD8 AD9 1 0 1 0 0 0 1 1 1 1 8 AD10 AD11 1 0 April 11, 2000 HT12A/HT12E Address/Data sequence The following provides the address/data sequence table for various models of the 212 series of encoders. The correct device should be selected according to the individual address and data requirements. Part No. Address/Data Bits 0 1 2 3 4 5 6 7 8 9 10 11 HT12A A0 A1 A2 A3 A4 A5 A6 A7 D8 D9 D10 D11 HT12E A0 A1 A2 A3 A4 A5 A6 A7 AD8 AD9 AD10 AD11 Transmission enable For the HT12E encoders, transmission is enabled by applying a low signal to the TE pin. For the HT12A encoders, transmission is enabled by applying a low signal to one of the data pins D8~D11. Two erroneous HT12E application circuits The HT12E must follow closely the application circuits provided by Holtek (see the ²Application circuits²). · Error: AD8~AD11 pins input voltage > VDD+0.3V O S C 2 V D D O S C 1 A D 1 1 T E A D 1 0 A D 9 V S S A D 8 1 2 V H T 1 2 E 9 April 11, 2000 HT12A/HT12E · Error: The IC¢s power source is activated by pins AD8~AD11 1 2 V O S C 2 V D D O S C 1 A D 1 1 T E A D 1 0 A D 9 V S S A D 8 H T 1 2 E Flowchart · HT12A · HT12E N o P o w e r o n P o w e r o n S ta n d b y m o d e S ta n d b y m o d e N o D a ta e n a b le ? Y e s T r a n s m is s io n e n a b le d ? Y e s 4 d a ta w o rd s tr a n s m itte d D a ta w ith c a r r ie r s e r ia l o u tp u t D a ta s till e n a b le d ? Y e s N o N o L /M B = G N D ? T r a n s m is s io n s till e n a b le d Y e s 4 d a ta w o rd s tr a n s m itte d c o n tin u o u s ly Y e s N o S e n d th e la s t c o d e S e n d ² 1 ² 7 tim e s fo r a ll o f th e d a ta c o d e s Note: D8~D11 are transmission enables of the HT12A. TE is the transmission enable of the HT12E. 10 April 11, 2000 HT12A/HT12E Oscillator frequency vs supply voltage fO S C (S c a le ) R (W ) O S C 7 .0 0 4 7 0 k 5 1 0 k 6 .0 0 5 6 0 k 6 2 0 k 5 .0 0 6 8 0 k 7 5 0 k 4 .0 0 8 2 0 k 9 1 0 k 1 .0 M (3 k H z )3 .0 0 1 .2 M 1 .5 M 2 .0 0 2 .0 M 1 .0 0 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 V D D (V D C ) The recommended oscillator frequency is fOSCD (decoder) @ 50 fOSCE (HT12E encoder) 1 @ fOSCE (HT12A encoder) 3 11 April 11, 2000 HT12A/HT12E Application Circuits V 1 0 0 W D D T r a n s m itte r C ir c u it V 1 2 3 4 5 6 7 8 9 A 0 V D D A 1 D O U T A 2 X 1 A 3 X 2 A 4 L /M B A 5 D 1 1 A 6 D 1 0 A 7 D 9 V S S D 8 1 8 1 A 0 V D D 1 8 2 A 1 D O U T 1 7 3 A 2 O S C 1 1 6 4 A 3 O S C 2 1 5 1 4 5 A 4 T E 1 4 1 3 6 A 5 A D 1 1 1 3 1 2 7 A 6 A D 1 0 1 2 1 1 8 A 7 A D 9 1 1 1 0 9 V S S A D 8 1 7 1 0 k W 1 6 4 5 5 k W 1 5 8 0 5 0 1 0 0 p F 1 0 M W 1 0 0 p F H T 1 2 A R D D O S C 1 0 H T 1 2 E Note: Typical infrared diode: EL-1L2 (KODENSHI CORP.) Typical RF transmitter: JR-220 (JUWA CORP.) 12 April 11, 2000 HT12A/HT12E Holtek Semiconductor Inc. (Headquarters) No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189 Holtek Semiconductor Inc. (Taipei Office) 5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C. Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Hong Kong) Ltd. RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Copyright Ó 2000 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. 13 April 11, 2000 TLP434A & RLP434A RF ASK Hybrid Modules for Radio Control ( New Version ) TLP434A Ultra Small Transmitter RLP434A SAW Based Receiver 10.3mm 13.3mm Easy-Link Wireless 1 2 3 4 13.0mm pin 1 : Gnd pin 2 : Digital Data Output pin 3 : Linear Output /Test pin 4 : Vcc pin 5 : Vcc pin 6 : Gnd pin 7 : Gnd pin 8 : Antenna 43.42mm pin 1 : GND pin 2 : Data In pin 3 : Vcc pin 4 : Antenna ( RF output ) 11.5mm 1 3 2 3 4 4 5 7 6 7 8 8 24.72mm 10.5mm 2.54mm Frequency 315, 418 and 433.92 Mhz Modulation : ASK Supply Voltage : 3.3 - 6.0 VDC Output : Digital & Linear Frequency 315, 418 and 433.92 Mhz Modulation : ASK Operation Voltage : 2 - 12 VDC Symbol Vcc Icc 1 Icc 2 Vh Vl FO PO Parameter Conditions Operating supply voltage Peak Current (2V) Peak Current (12V) Input High Voltage Input Low Voltage Absolute Frequency RF Output Power- 50ohm Min Typ 2.0 Idata= 100uA (High) Vcc-0.5 Vcc Idata= 0 uA (Low) 315Mhz module 314.8 315 Vcc = 9V-12V 16 Vcc = 5V-6V 14 DR Data Rate External Encoding 512 4.8K Notes : ( Case Temperature = 25°C +- 2°C , Test Load Impedance = 50 ohm ) Max Unit 12.0 1.64 19.4 Vcc+0.5 0.3 315.2 200K V mA mA V V MHz dBm dBm bps Application Circuit : Typical Key-chain Transmitter using HT12E-18DIP, a Binary 12 bit Encoder from Holtek Semiconductor Inc. Symbol Parameter Vcc Operating supply voltage Itot Operating Current Vdata Data Out Conditions Idata = +200 uA ( High ) Idata = -10 uA ( Low ) Min Typ Max 3.3 Vcc-0.5 - 5.0V 4.5 - 6.0 Vcc 0.3 Electrical Characteristics Characteristics Operation Radio Frequency Sensitivity Channel Width Noise Equivalent BW Receiver Turn On Time Operation Temperature Baseboard Data Rate SYM FC Pref Min Top -20 Typ 315, 418 and 433.92 -110 +-500 4 5 4.8 Max 80 Application Circuit : Typical RF Receiver using HT12D-18DIP, a Binary 12 bit Decoder with 8 bit uC HT48RXX from Holtek Semiconductor Inc. Laipac Technology, Inc. 105 West Beaver Creek Rd. Unit 207 Richmond Hill Ontario L4B 1C6 Canada Tel: (905)762-1228 Fax: (905)763-1737 e-mail: [email protected] V mA V V Unit MHz dBm Khz Khz ms C KHz SN54/74LS04 HEX INVERTER HEX INVERTER VCC 14 1 LOW POWER SCHOTTKY 13 2 12 11 3 4 10 5 9 6 8 J SUFFIX CERAMIC CASE 632-08 7 14 GND 1 N SUFFIX PLASTIC CASE 646-06 14 1 14 1 D SUFFIX SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ SN74LSXXN SN74LSXXD Ceramic Plastic SOIC GUARANTEED OPERATING RANGES Parameter Symbol Min Typ Max Unit VCC Supply Voltage 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 – 55 0 25 25 125 70 °C IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 74 4.0 8.0 mA FAST AND LS TTL DATA 5-1 SN54/74LS04 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Min Parameter VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage VOH Output HIGH Voltage VOL Output LOW Voltage IIH Input HIGH Current IIL Input LOW Current IOS Short Circuit Current (Note 1) ICC Power Supply Current Total, Output HIGH Total, Output LOW Typ Max 2.0 54 0.7 74 0.8 – 0.65 – 1.5 Unit Test Conditions V Guaranteed Input HIGH Voltage for All Inputs V Guaranteed Input p LOW Voltage g for All Inputs V VCC = MIN, IIN = – 18 mA 54 2.5 3.5 V 74 2.7 3.5 V VCC = MIN,, IOH = MAX,, VIN = VIH or VIL per Truth Table 54, 74 0.25 0.4 V IOL = 4.0 mA 74 0.35 0.5 V IOL = 8.0 mA – 20 VCC = VCC MIN, VIN = VIL or VIH per Truth Table 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V – 0.4 mA VCC = MAX, VIN = 0.4 V –100 mA VCC = MAX 2.4 mA VCC = MAX 6.6 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Limits Symbol Parameter Min Typ Max Unit Test Conditions VCC = 5.0 V CL = 15 pF tPLH Turn-Off Delay, Input to Output 9.0 15 ns tPHL Turn-On Delay, Input to Output 10 15 ns FAST AND LS TTL DATA 5-2 NE555 SA555 - SE555 GENERAL PURPOSE SINGLE BIPOLAR TIMERS .. .. . .. . LOW TURN OFF TIME MAXIMUM OPERATING FREQUENCY GREATER THAN 500kHz TIMING FROM MICROSECONDS TO HOURS OPERATES IN BOTH ASTABLE AND MONOSTABLE MODES HIGH OUTPUT CURRENT CAN SOURCE OR SINK 200mA ADJUSTABLE DUTY CYCLE TTL COMPATIBLE TEMPERATURE STABILITY OF 0.005% PERoC DESCRIPTION The NE555 monolithic timing circuit is a highly stable controller capableof producing accuratetime delays or oscillation. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor.For a stableoperation as an oscillator, the free running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output structure can source or sink up to 200mA. The NE555 is available in plastic and ceramic minidip package and in a 8-lead micropackage and in metal can package version. N DIP8 (Plastic Package) D SO8 (Plastic Micropackage) ORDER CODES Part Number Package Temperature Range N D NE555 0oC, 70oC • • SA555 –40oC, 105oC • • SE555 –55 C, 125 C • • o o PIN CONNECTIONS (top view) July 1998 1 8 2 7 3 6 4 5 1 2 3 4 5 6 7 8 - GND - Trigger - Output - Reset - Control voltage - Threshold - Discharge - VCC 1/10 NE555/SA555/SE555 BLOCK DIAGRAM VCC+ 5kΩ COMP THRESHOLD CONTROL VOLTAGE DISCHARGE R FLIP-FLOP Q 5kΩ COMP OUT TRIGGER S INHIBIT/ RESET 5kΩ S RESET S - 808 6 SCHEMATIC DIAGRAM CONTROL VOLTAGE OUTPUT THRESHOLD COMPARATOR 5 VCC R2 830Ω R1 4.7kΩ R12 6.8kΩ R4 R8 1kΩ 5kΩ R3 4.7kΩ Q21 Q5 Q6 Q7 Q8 Q19 Q9 Q22 Q20 Ρ13 3.9kΩ R11 5kΩ THRESHOLD Q2 Q23 Q3 R9 5kΩ Q11 Q12 TRIGGER 2 D2 Q24 Q16 RES ET DISCHARGE R14 220Ω Q13 Q10 4 3 D1 R17 4.7kΩ Q4 Q1 Q18 R16 100Ω R15 4.7kΩ Q15 7 Q17 Q14 R5 10kΩ R6 100kΩ R7 100kΩ R10 5kΩ 1 G ND TRIGGER COMPARATOR FLIP FLOP ABSOLUTE MAXIMUM RATINGS Symbol Vcc Toper Tj Tstg 2/10 Parameter Value Supply Voltage Operating Free Air Temperature Range Junction Temperature Storage Temperature Range 18 for NE555 for SA555 for SE555 Unit V 0 to 70 –40 to 105 –55 to 125 o 150 o –65 to 150 o C C C NE555/SA555/SE555 OPERATING CONDITIONS Symbol VCC Vth, Vtrig, Vcl, Vreset Parameter Supply Voltage Maximum Input Voltage SE555 NE555 - SA555 Unit 4.5 to 18 4.5 to 18 V VCC VCC V ELECTRICAL CHARACTERISTICS T amb = +25oC, VCC = +5V to +15V (unless otherwise specified) Symbol ICC VCL Vth Ith Vtrig Itrig Parameter Max. 3 10 2 Timing Error (monostable) (RA = 2k to 100kΩ, C = 0.1µF) Initial Accuracy - (note 2) Drift with Temperature Drift with Supply Voltage 0.5 30 0.05 Timing Error (astable) (RA, RB = 1kΩ to 100kΩ, C = 0.1µF, VCC = +15V) Initial Accuracy - (note 2) Drift with Temperature Drift with Supply Voltage 1.5 90 0.15 Supply Current (RL ∞) (- note 1) Low State VCC = +5V VCC = +15V High State VCC = 5V Min. Typ. Max. 5 12 3 10 2 6 15 2 100 0.2 1 50 0.1 3 0.5 2.25 150 0.3 10 3.33 10.4 3.8 9 2.6 10 3.33 11 4 Threshold Voltage VCC = +15V VCC = +5V 9.4 2.7 10 3.33 10.6 4 8.8 2.4 10 3.33 11.2 4.2 0.1 0.25 0.1 0.25 5 1.67 5.2 1.9 5 1.67 5.6 2.2 0.5 0.9 0.5 2.0 0.7 1 0.7 1 V V Threshold Current - (note 3) Reset Current VOL µA V 4.8 1.45 Trigger Current (Vtrig = 0V) Ireset % ppm/°C %/V % ppm/°C %/V 9.6 2.9 Trigger Voltage VCC = +15V VCC = +5V Unit mA Control Voltage level VCC = +15V VCC = +5V Reset Voltage - (note 4) Notes : NE555 - SA555 Typ. Vreset VOH SE555 Min. 0.4 4.5 1.1 0.4 µA V mA 0.1 0.4 0.4 1 0.1 0.4 0.4 1.5 Low Level Output Voltage VCC = +15V, IO(sink) = 10mA IO(sink) = 50mA IO(sink) = 100mA IO(sink) = 200mA VCC = +5V, IO(sink) = 8mA IO(sink) = 5mA 0.1 0.4 2 2.5 0.1 0.05 0.15 0.5 2.2 0.1 0.4 2 2.5 0.3 0.25 0.25 0.75 2.5 High Level Output Voltage VCC = +15V, IO(source) = 200mA IO(source) = 100mA VCC = +5V, IO(source) = 100mA 12.5 13.3 3.3 Vreset = +0.4V Vreset = 0V V 0.25 0.2 0.4 0.35 V 13 3 12.75 2.75 12.5 13.3 3.3 1. Supply current when output is high is typically 1mA less. 2. Tested at VCC = +5V and VCC = +15V. 3. This will determine the maximum value of RA + RB for +15V operation the max total is R = 20MΩ and for 5V operation the max total R = 3.5MΩ. 3/10 NE555/SA555/SE555 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter SE555 Min. NE555 - SA555 Typ. Max. 20 100 Min. Typ. Max. 20 100 Idis (off) Discharge Pin Leakage Current (output high) (Vdis = 10V) Vdis(sat) Discharge pin Saturation Voltage (output low) - (note 5) VCC = +15V, Idis = 15mA VCC = +5V, Idis = 4.5mA 180 80 480 200 180 80 480 200 Output Rise Time Output Fall Time 100 100 200 200 100 100 300 300 Turn off Time - (note 6) (Vreset = VCC) 0.5 tr tf toff Notes : Unit nA mV 0.5 ns µs 5. No protection against excessive Pin 7 current is necessary, providing the package dissipation rating will not be exceeded. 6. Time mesaured from a positive going input pulse from 0 to 0.8x VCC into the threshold to the drop from high to low of the output trigger is tied to treshold. Figure 1 : Minimum Pulse Width Required for Trigering Figure 2 : Supply Current versus Supply Voltage Figure 3 : Delay Time versus Temperature Figure 4 : Low Output Voltage versus Output Sink Current 4/10 NE555/SA555/SE555 Figure 5 : Low Output Voltage versus Output Sink Current Figure 6 : Low Output Voltage versus Output Sink Current Figure 7 : High Output Voltage Drop versus Output Figure 8 : Delay Time versus Supply Voltage Figure 9 : Propagation Delay versus Voltage Level of Trigger Value 5/10 NE555/SA555/SE555 APPLICATION INFORMATION Figure 11 MONOSTABLE OPERATION In the monostable mode, the timer functions as a one-shot. Referring to figure 10 the external capacitor is initially held discharged by a transistor inside the timer. Figure 10 t = 0.1 ms / div INPUT = 2.0V/div OUTPUT VOLTAGE = 5.0V/div VCC = 5 to 15V Reset R1 4 7 The circuit triggers on a negative-going input signal when the level reaches 1/3 Vcc. Once triggered, the circuit remains in this state until the set time has elapsed, even if it is triggered again during this interval.The duration of the output HIGH stateis given by t = 1.1 R1C1 and is easily determined by figure 12. Notice that since the charge rate and the threshold level of the comparator are both directly proportional to supply voltage, the timing interval is independent of supply. Applying a negativepulse simultaneously to the reset terminal (pin 4) and the trigger terminal (pin 2) during the timing cycle discharges the external capacitor and causes the cycle to start over. The timing cycle now starts on the positive edge of the reset pulse. During the time the reset pulse in applied, the output is driven to its LOW state. When a negativetrigger pulse is applied to pin 2, the flip-flop is set, releasing the short circuit across the external capacitor and driving the output HIGH. The voltage across the capacitor increases exponentially with the time constantτ = R1C1. When the voltage across the capacitor equals 2/3 Vcc, the comparatorresets the flip-flop which then discharge the capacitor rapidly and drivers the output to its LOW state. Figure 11 shows the actual waveforms generatedin this mode of operation. When Reset is not used, it should be tied high to avoid any possibly or false triggering. 6/10 Figure 12 C (µF) 10 1.0 Ω 0.01 µF R1 = 9.1kΩ, C1 = 0.01µF, RL = 1kΩ 0.1 0.01 0.001 10 µs Ω 1 Control Voltage CAPACITOR VOLTAGE = 2.0V/div 10 M 5 3 C1 Ω 10 0k Ω 1M Output 6 1k Ω NE555 10 k 2 R 1= Trigger 8 100 µs 1.0 ms 10 ms 100 ms 10 s (t d ) ASTABLE OPERATION When the circuit is connected as shown in figure 13 (pin 2 and 6 connected)it triggers itself and free runs as a multivibrator. The external capacitor charges through R1 and R2 and discharges through R2 only. Thus the duty cycle may be precisely set by the ratio of these two resistors. In the astable mode of operation, C1 charges and discharges between 1/3 Vcc and 2/3 Vcc. As in the triggeredmode, the chargeand discharge times and therefore frequency are independent of the supply voltage. NE555/SA555/SE555 Figure 15 : Free Running Frequency versus R1, R2 and C1 Figure 13 VCC = 5 to 15V R1 4 Output 8 7 3 NE555 Control Voltage 0.01 µF R2 1 2 1.0 R1 + 0.1 6 5 C (µF) 10 R2 1M = C1 0.01 Figure 14 shows actual waveforms generatedin this mode of operation. The charge time (output HIGH) is given by : t1 = 0.693 (R1 + R2) C1 and the discharge time (output LOW) by : t2 = 0.693 (R2) C1 Thus the total period T is given by : T = t1 + t2 = 0.693 (R1 + 2R2) C1 The frequency ofoscillation is them : 1 1.44 f= = T (R1 + 2R2) C1 and may be easily found by figure 15. The duty cycle is given by : R2 D= R1 + 2R2 0.001 0.1 1 10 Ω 10 M 1k Ω 10 kΩ 0k Ω Ω 10 100 1k 10k f o (Hz) PULSE WIDTH MODULATOR When the timer is connected in the monostable mode and triggered with a continuous pulse train, the output pulse width can be modulated by a signal applied to pin 5. Figure 16 shows the circuit. Figure 16 : Pulse Width Modulator. VCC RA 8 4 Figure 14 Trigger 7 2 t = 0.5 ms / div NE555 6 Modulation Input OUTPUT VOLTAGE = 5.0V/div Output 3 5 C 1 CAPACITOR VOLTAGE = 1.0V/div R1 = R2 = 4.8kΩ, C1= 0.1µF, RL = 1kΩ 7/10 NE555/SA555/SE555 LINEAR RAMP When the pullup resistor, RA, in the monostable circuit is replaced by a constant current source, a linear ramp is generated. Figure 17 shows a circuit configuration that will perform this function. Figure 17. VCC RE Thus the frequency of oscillation is f = 1 t1 + t2 Note that this circuit will not oscillate if RB is greater 8 4 Trigger R1 50% DUTY CYCLE OSCILLATOR For a 50% duty cycle the resistors RA and RE may beconnected as in figure19. The time preriod for the output high is the same as previous, t1 = 0.693 RA C. For the output low it is t2 = RB − 2RA [(RARB) ⁄ (RA + RB)] CLn 2RB − RA Figure 19 : 50% Duty Cycle Oscillator. 7 2 NE555 2N4250 or equiv. VCC 6 VCC C Output 3 5 0.01µF R2 RA 51kΩ 1 4 8 RB 7 2 22kΩ NE55 Figure 18 shows waveforms generator by the linear ramp. The time interval is given by : (2/3 VCC RE (R1+ R2) C T= VBE = 0.6V R1 VCC − VBE (R1+ R2) Figure 18 : Linear Ramp. Out 6 5 3 1 0.01µF C 0.01µF than 1/2 RA because the junction of RA and RB cannot bring pin 2 down to 1/3 VCC and trigger the lower comparator. ADDITIONAL INFORMATION Adequate power supply bypassing is necessary to protect associated circuitry. Minimum recommended is 0.1µF in parallel with 1µF electrolytic. VCC = 5V Time = 20µs/DIV R 1 = 47kΩ R 2 = 100kΩ R E = 2.7kΩ C = 0.01µF 8/10 Top trace : input 3V/DIV Middle trace : output 5V/DIV Bottom trace : output 5V/DIV Bottom trace : capacitor voltage 1V/DIV NE555/SA555/SE555 PM-DIP8.EPS PACKAGE MECHANICAL DATA 8 PINS - PLASTIC DIP A a1 B b b1 D E e e3 e4 F i L Z Min. Millimeters Typ. 3.32 0.51 1.15 0.356 0.204 Max. 1.65 0.55 0.304 10.92 9.75 7.95 Min. 0.020 0.045 0.014 0.008 Max. 0.065 0.022 0.012 0.430 0.384 0.313 2.54 7.62 7.62 3.18 Inches Typ. 0.131 0.100 0.300 0.300 6.6 5.08 3.81 1.52 0.125 0260 0.200 0.150 0.060 DIP8.TBL Dimensions 9/10 NE555/SA555/SE555 PM-SO8.EPS PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO) A a1 a2 a3 b b1 C c1 D E e e3 F L M S Min. Millimeters Typ. 0.1 0.65 0.35 0.19 0.25 Max. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 Min. Inches Typ. 0.026 0.014 0.007 0.010 Max. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.189 0.228 0.197 0.244 0.004 o 45 (typ.) 4.8 5.8 5.0 6.2 1.27 3.81 3.8 0.4 0.050 0.150 4.0 1.27 0.6 0.150 0.016 0.157 0.050 0.024 o 8 (max.) SO8.TBL Dimensions 1998 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdo m - U.S.A. 10/10 ORDER CODE : Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this pub lication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST log o is a trademark of STMicroelectronics This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components. 19-4323; Rev 11; 2/03 +5V-Powered, Multichannel RS-232 Drivers/Receivers ____________________________Features Superior to Bipolar ♦ Operate from Single +5V Power Supply (+5V and +12V—MAX231/MAX239) ♦ Low-Power Receive Mode in Shutdown (MAX223/MAX242) ♦ Meet All EIA/TIA-232E and V.28 Specifications ♦ Multiple Drivers and Receivers ♦ 3-State Driver and Receiver Outputs ♦ Open-Line Detection (MAX243) Ordering Information ________________________Applications PART MAX220CPE MAX220CSE MAX220CWE MAX220C/D MAX220EPE MAX220ESE MAX220EWE MAX220EJE MAX220MJE Portable Computers Low-Power Modems Interface Translation Battery-Powered RS-232 Systems Multidrop RS-232 Networks TEMP RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -55°C to +125°C PIN-PACKAGE 16 Plastic DIP 16 Narrow SO 16 Wide SO Dice* 16 Plastic DIP 16 Narrow SO 16 Wide SO 16 CERDIP 16 CERDIP Ordering Information continued at end of data sheet. *Contact factory for dice specifications. Selection Table Part Number MAX220 MAX222 MAX223 (MAX213) MAX225 MAX230 (MAX200) MAX231 (MAX201) MAX232 (MAX202) MAX232A MAX233 (MAX203) MAX233A MAX234 (MAX204) MAX235 (MAX205) MAX236 (MAX206) MAX237 (MAX207) MAX238 (MAX208) MAX239 (MAX209) MAX240 MAX241 (MAX211) MAX242 MAX243 MAX244 MAX245 MAX246 MAX247 MAX248 MAX249 Power Supply (V) +5 +5 +5 +5 +5 +5 and +7.5 to +13.2 +5 +5 +5 +5 +5 +5 +5 +5 +5 +5 and +7.5 to +13.2 +5 +5 +5 +5 +5 +5 +5 +5 +5 +5 No. of RS-232 Drivers/Rx 2/2 2/2 4/5 5/5 5/0 2/2 No. of Ext. Caps 4 4 4 0 4 2 Nominal Cap. Value (µF) 0.1 0.1 1.0 (0.1) — 1.0 (0.1) 1.0 (0.1) SHDN & ThreeState No Yes Yes Yes Yes No Rx Active in SHDN — — ✔ ✔ — — Data Rate (kbps) 120 200 120 120 120 120 2/2 2/2 2/2 2/2 4/0 5/5 4/3 5/3 4/4 3/5 4 4 0 0 4 0 4 4 4 2 1.0 (0.1) 0.1 — — 1.0 (0.1) — 1.0 (0.1) 1.0 (0.1) 1.0 (0.1) 1.0 (0.1) No No No No No Yes Yes No No No — — — — — — — — — — 120 (64) 200 120 200 120 120 120 120 120 120 5/5 4/5 2/2 2/2 8/10 8/10 8/10 8/9 8/8 6/10 4 4 4 4 4 0 0 0 4 4 1.0 1.0 (0.1) 0.1 0.1 1.0 — — — 1.0 1.0 Yes Yes Yes No No Yes Yes Yes Yes Yes — — ✔ — — ✔ ✔ ✔ ✔ ✔ 120 120 200 200 120 120 120 120 120 120 Features Ultra-low-power, industry-standard pinout Low-power shutdown MAX241 and receivers active in shutdown Available in SO 5 drivers with shutdown Standard +5/+12V or battery supplies; same functions as MAX232 Industry standard Higher slew rate, small caps No external caps No external caps, high slew rate Replaces 1488 No external caps Shutdown, three state Complements IBM PC serial port Replaces 1488 and 1489 Standard +5/+12V or battery supplies; single-package solution for IBM PC serial port DIP or flatpack package Complete IBM PC serial port Separate shutdown and enable Open-line detection simplifies cabling High slew rate High slew rate, int. caps, two shutdown modes High slew rate, int. caps, three shutdown modes High slew rate, int. caps, nine operating modes High slew rate, selective half-chip enables Available in quad flatpack package ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX220–MAX249 General Description The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available. These parts are especially useful in battery-powered systems, since their low-power shutdown mode reduces power dissipation to less than 5µW. The MAX225, MAX233, MAX235, and MAX245/MAX246/MAX247 use no external components and are recommended for applications where printed circuit board space is critical. MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ABSOLUTE MAXIMUM RATINGS—MAX220/222/232A/233A/242/243 Supply Voltage (VCC) ...............................................-0.3V to +6V Input Voltages TIN..............................................................-0.3V to (VCC - 0.3V) RIN (Except MAX220) ........................................................±30V RIN (MAX220).....................................................................±25V TOUT (Except MAX220) (Note 1) .......................................±15V TOUT (MAX220)...............................................................±13.2V Output Voltages TOUT ...................................................................................±15V ROUT .........................................................-0.3V to (VCC + 0.3V) Driver/Receiver Output Short Circuited to GND.........Continuous Continuous Power Dissipation (TA = +70°C) 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW 18-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW 20-Pin Plastic DIP (derate 8.00mW/°C above +70°C) ..440mW 16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW 16-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW 18-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW 20-Pin Wide SO (derate 10.00mW/°C above +70°C)....800mW 20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW 16-Pin CERDIP (derate 10.00mW/°C above +70°C).....800mW 18-Pin CERDIP (derate 10.53mW/°C above +70°C).....842mW Operating Temperature Ranges MAX2_ _AC_ _, MAX2_ _C_ _ .............................0°C to +70°C MAX2_ _AE_ _, MAX2_ _E_ _ ..........................-40°C to +85°C MAX2_ _AM_ _, MAX2_ _M_ _ .......................-55°C to +125°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10s) .................................+300°C Note 1: Input voltage measured with TOUT in high-impedance state, SHDN or VCC = 0V. Note 2: For the MAX220, V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed 13V. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (VCC = +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA = TMIN to TMAX‚ unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX UNITS 0.8 V RS-232 TRANSMITTERS Output Voltage Swing All transmitter outputs loaded with 3kΩ to GND ±5 Input Logic Threshold Low Input Logic Threshold High Logic Pull-Up/lnput Current Output Leakage Current ±8 1.4 All devices except MAX220 MAX220: VCC = 5.0V 2 V 1.4 V 2.4 All except MAX220, normal operation 5 40 SHDN = 0V, MAX222/242, shutdown, MAX220 ±0.01 ±1 VCC = 5.5V, SHDN = 0V, VOUT = ±15V, MAX222/242 ±0.01 ±10 VCC = SHDN = 0V, VOUT = ±15V ±0.01 ±10 200 116 Data Rate µA µA kbps Transmitter Output Resistance VCC = V+ = V- = 0V, VOUT = ±2V 300 10M Ω Output Short-Circuit Current VOUT = 0V ±7 ±22 mA RS-232 RECEIVERS RS-232 Input Voltage Operating Range ±30 RS-232 Input Threshold Low VCC = 5V RS-232 Input Threshold High VCC = 5V RS-232 Input Hysteresis All except MAX243 R2IN 0.8 MAX243 R2IN (Note 2) -3 1.8 2.4 MAX243 R2IN (Note 2) -0.5 -0.1 0.5 1 RS-232 Input Resistance 2 1 3 TTL/CMOS Output Voltage High IOUT = -1.0mA TTL/CMOS Output Short-Circuit Current 0.2 MAX243 IOUT = 3.2mA V All except MAX243 R2IN All except MAX243, VCC = 5V, no hysteresis in shdn. TTL/CMOS Output Voltage Low 1.3 V V V 5 7 kΩ 0.2 0.4 V 3.5 VCC - 0.2 Sourcing VOUT = GND -2 -10 Shrinking VOUT = VCC 10 30 _______________________________________________________________________________________ V mA +5V-Powered, Multichannel RS-232 Drivers/Receivers PARAMETER CONDITIONS TTL/CMOS Output Leakage Current SHDN = VCC or EN = VCC (SHDN = 0V for MAX222), 0V ≤ VOUT ≤ VCC EN Input Threshold Low MAX242 EN Input Threshold High MAX242 2.0 Operating Supply Voltage 3kΩ load both inputs MAX220 UNITS ±0.05 ±10 µA 1.4 0.8 V 1.4 5.5 MAX222/232A/233A/242/243 4 10 MAX220 12 MAX222/232A/233A/242/243 15 TA = +25°C 0.1 10 TA = 0°C to +70°C 2 50 TA = -40°C to +85°C 2 50 TA = -55°C to +125°C 35 100 SHDN Input Leakage Current MAX222/242 SHDN Threshold Low MAX222/242 SHDN Threshold High MAX222/242 CL = 50pF to 2500pF, MAX222/232A/233A/242/243 RL = 3kΩ to 7kΩ, VCC = 5V, TA = +25°C, measured from +3V MAX220 to -3V or -3V to +3V MAX222/232A/233A/242/243 tPHLT MAX220 tPLHT V 2 MAX222/242 Transmitter Propagation Delay TLL to RS-232 (Normal Operation), Figure 1 MAX 0.5 Shutdown Supply Current Transition Slew Rate TYP 4.5 No load VCC Supply Current (SHDN = VCC), Figures 5, 6, 11, 19 MIN 1.4 MAX222/232A/233A/242/243 mA µA ±1 µA 0.8 V 2.0 1.4 V 6 12 30 1.5 3 30 1.3 3.5 V/µs 4 10 1.5 3.5 µs 5 10 MAX222/232A/233A/242/243 0.5 1 MAX220 0.6 3 MAX222/232A/233A/242/243 0.6 1 MAX220 0.8 3 tPHLS MAX242 0.5 10 tPLHS MAX242 2.5 10 Receiver-Output Enable Time, Figure 3 tER MAX242 125 500 ns Receiver-Output Disable Time, Figure 3 tDR MAX242 160 500 ns Transmitter-Output Enable Time (SHDN Goes High), Figure 4 tET MAX222/242, 0.1µF caps (includes charge-pump start-up) 250 µs Transmitter-Output Disable Time (SHDN Goes Low), Figure 4 tDT MAX222/242, 0.1µF caps 600 ns Transmitter + to - Propagation Delay Difference (Normal Operation) tPHLT - tPLHT MAX222/232A/233A/242/243 300 MAX220 2000 Receiver + to - Propagation Delay Difference (Normal Operation) tPHLR - tPLHR MAX222/232A/233A/242/243 100 MAX220 225 Receiver Propagation Delay RS-232 to TLL (Normal Operation), Figure 2 Receiver Propagation Delay RS-232 to TLL (Shutdown), Figure 2 tPHLR tPLHR MAX220 V µs µs ns ns Note 3: MAX243 R2OUT is guaranteed to be low when R2IN is ≥ 0V or is floating. _______________________________________________________________________________________ 3 MAX220–MAX249 ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued) (VCC = +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA = TMIN to TMAX‚ unless otherwise noted.) __________________________________________Typical Operating Characteristics MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243 AVAILABLE OUTPUT CURRENT vs. DATA RATE VCC = ±5V NO LOAD ON TRANSMITTER OUTPUTS (EXCEPT MAX220, MAX233A) 2 0 0.1µF V- LOADED, NO LOAD ON V+ -2 1µF 0.1µF -4 ALL CAPS 1µF 9 VCC = +5.25V 8 ALL CAPS 0.1µF 7 +10V 1µF CAPS V+ VCC = +4.75V +5V +5V 0V 1µF CAPS 6 V+ LOADED, NO LOAD ON V0 5 10 15 LOAD CURRENT (mA) 4 0.1µF CAPS 5 -10 20 25 0.1µF CAPS SHDN 0V -6 -8 V+ V- 4 V- -10V 0 10 20 30 40 50 60 500µs/div DATA RATE (kbits/sec) _______________________________________________________________________________________ MAX220-03 EITHER V+ OR V- LOADED 4 10 OUTPUT CURRENT (mA) 6 OUTPUT LOAD CURRENT FLOWS FROM V+ TO V- V+, V- VOLTAGE (V) 1µF 8 11 MAX220-01 10 MAX222/MAX242 ON-TIME EXITING SHUTDOWN MAX220-02 OUTPUT VOLTAGE vs. LOAD CURRENT OUTPUT VOLTAGE (V) MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V-Powered, Multichannel RS-232 Drivers/Receivers 20-Pin Wide SO (derate 10 00mW/°C above +70°C).......800mW 24-Pin Wide SO (derate 11.76mW/°C above +70°C).......941mW 28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1W 44-Pin Plastic FP (derate 11.11mW/°C above +70°C) .....889mW 14-Pin CERDIP (derate 9.09mW/°C above +70°C) ..........727mW 16-Pin CERDIP (derate 10.00mW/°C above +70°C) ........800mW 20-Pin CERDIP (derate 11.11mW/°C above +70°C) ........889mW 24-Pin Narrow CERDIP (derate 12.50mW/°C above +70°C) ..............1W 24-Pin Sidebraze (derate 20.0mW/°C above +70°C)..........1.6W 28-Pin SSOP (derate 9.52mW/°C above +70°C).............762mW Operating Temperature Ranges MAX2 _ _ C _ _......................................................0°C to +70°C MAX2 _ _ E _ _ ...................................................-40°C to +85°C MAX2 _ _ M _ _ ...............................................-55°C to +125°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (MAX223/230/232/234/236/237/238/240/241, VCC = +5V ±10; MAX233/MAX235, VCC = 5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239, VCC = 5V ±10%; V+ = 7.5V to 13.2V; TA = TMIN to TMAX; unless otherwise noted.) PARAMETER Output Voltage Swing CONDITIONS All transmitter outputs loaded with 3kΩ to ground MIN TYP ±5.0 ±7.3 MAX232/233 VCC Power-Supply Current No load, TA = +25°C V+ Power-Supply Current MAX223/230/234–238/240/241 10 7 15 0.4 1 MAX231 1.8 5 MAX239 5 15 MAX223 15 50 MAX230/235/236/240/241 1 10 TA = +25°C Input Logic Threshold Low TIN; EN, SHDN (MAX233); EN, SHDN (MAX230/235–241) 0.8 TIN 2.0 Input Logic Threshold High EN, SHDN (MAX223); EN, SHDN (MAX230/235/236/240/241) 2.4 Logic Pull-Up Current TIN = 0V mA mA µA V V 1.5 -30 UNITS V 5 MAX231/239 Shutdown Supply Current Receiver Input Voltage Operating Range MAX 200 µA 30 V _______________________________________________________________________________________ 5 MAX220–MAX249 ABSOLUTE MAXIMUM RATINGS—MAX223/MAX230–MAX241 VCC ...........................................................................-0.3V to +6V V+ ................................................................(VCC - 0.3V) to +14V V- ............................................................................+0.3V to -14V Input Voltages TIN ............................................................-0.3V to (VCC + 0.3V) RIN......................................................................................±30V Output Voltages TOUT ...................................................(V+ + 0.3V) to (V- - 0.3V) ROUT .........................................................-0.3V to (VCC + 0.3V) Short-Circuit Duration, TOUT ......................................Continuous Continuous Power Dissipation (TA = +70°C) 14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)....800mW 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW 20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW 24-Pin Narrow Plastic DIP (derate 13.33mW/°C above +70°C) ..........1.07W 24-Pin Plastic DIP (derate 9.09mW/°C above +70°C)......500mW 16-Pin Wide SO (derate 9.52mW/°C above +70°C).........762mW MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued) (MAX223/230/232/234/236/237/238/240/241, VCC = +5V ±10; MAX233/MAX235, VCC = 5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239, VCC = 5V ±10%; V+ = 7.5V to 13.2V; TA = TMIN to TMAX; unless otherwise noted.) PARAMETER RS-232 Input Threshold Low RS-232 Input Threshold High CONDITIONS TA = +25°C, VCC = 5V TA = +25°C, VCC = 5V MIN TYP Normal operation SHDN = 5V (MAX223) SHDN = 0V (MAX235/236/240/241) 0.8 1.2 Shutdown (MAX223) SHDN = 0V, EN = 5V (R4IN, R5IN) 0.6 1.5 Normal operation SHDN = 5V (MAX223) SHDN = 0V (MAX235/236/240/241) 1.7 Shutdown (MAX223) SHDN = 0V, EN = 5V (R4IN‚ R5IN) 1.5 2.4 0.2 0.5 1.0 V 3 5 7 kΩ 0.4 V 3.5 VCC - 0.4 RS-232 Input Resistance TA = +25°C, VCC = 5V TTL/CMOS Output Voltage Low IOUT = 1.6mA (MAX231/232/233, IOUT = 3.2mA) TTL/CMOS Output Voltage High IOUT = -1mA TTL/CMOS Output Leakage Current 0V ≤ ROUT ≤ VCC; EN = 0V (MAX223); EN = VCC (MAX235–241 ) Receiver Output Enable Time Normal operation MAX223 600 MAX235/236/239/240/241 400 Receiver Output Disable Time Normal operation MAX223 900 MAX235/236/239/240/241 250 Propagation Delay Normal operation RS-232 IN to TTL/CMOS OUT, SHDN = 0V CL = 150pF (MAX223) Transmitter Output Short-Circuit Current 6 0.05 V ±10 ns 0.5 10 4 40 tPLHS 6 40 5.1 30 3 µA ns tPHLS MAX223/MAX230/MAX234–241, TA = +25°C, VCC = 5V, RL = 3kΩ to 7kΩ‚ CL = 50pF to 2500pF, measured from +3V to -3V or -3V to +3V µs V/µs MAX231/MAX232/MAX233, TA = +25°C, VCC = 5V, RL = 3kΩ to 7kΩ, CL = 50pF to 2500pF, measured from +3V to -3V or -3V to +3V VCC = V+ = V- = 0V, VOUT = ±2V 2.4 V VCC = 5V, no hysteresis in shutdown Transmitter Output Resistance UNITS V RS-232 Input Hysteresis Transition Region Slew Rate MAX 4 300 30 Ω ±10 _______________________________________________________________________________________ mA mA +5V-Powered, Multichannel RS-232 Drivers/Receivers TRANSMITTER OUTPUT VOLTAGE (VOH) vs. LOAD CAPACITANCE AT DIFFERENT DATA RATES 2 TRANSMITTERS LOADED 7.2 7.0 6.5 4.5 6.6 TA = +25°C VCC = +5V 3 TRANSMITTERS LOADED RL = 3kΩ C1–C4 = 1µF 6.4 6.2 6.0 0 500 1000 1500 8.0 7.0 3 TRANSMITTERS LOADED 4 TRANSMITTERS LOADED 6.0 5.0 4.0 0 2500 2000 500 1000 1500 2000 2500 LOAD CAPACITANCE (pF) TRANSMITTER OUTPUT VOLTAGE (VOL) vs. VCC TRANSMITTER OUTPUT VOLTAGE (VOL) vs. LOAD CAPACITANCE AT DIFFERENT DATA RATES TRANSMITTER OUTPUT VOLTAGE (V+, V-) vs. LOAD CURRENT TA = +25°C VCC = +5V 3 TRANSMITTERS LOADED RL = 3kΩ C1–C4 = 1µF -6.2 -6.4 VOL (V) -6.6 -7.5 1 TRANSMITTER LOADED 2 TRANSMITTERS LOADED 10 8 6 -7.0 2 0 -2 -6 -7.4 -8 5.0 VCC (V) 5.5 ALL TRANSMITTERS UNLOADED -10 -7.6 -9.0 V+ LOADED, NO LOAD ON V- -4 -7.2 3 TRANSMITTERS LOADED TA = +25°C VCC = +5V C1–C4 = 1µF V- LOADED, V+ AND VNO LOAD EQUALLY ON V+ LOADED 4 160kbits/sec 80kbits/sec 20Kkbits/sec -6.8 MAX220-09 -6.0 MAX220-08 TA = +25°C C1–C4 = 1µF TRANSMITTER LOADS = 3kΩ || 2500pF V+, V- (V) -7.0 4.5 2 TRANSMITTERS LOADED 9.0 LOAD CAPACITANCE (pF) 4 TRANSMITTERS LOADED -8.5 SLEW RATE (V/µs) 160kbits/sec 80kbits/sec 20kbits/sec VCC (V) -6.5 -8.0 TA = +25°C VCC = +5V LOADED, RL = 3kΩ C1–C4 = 1µF 10.0 6.8 5.5 5.0 -6.0 VOL (V) VOH (V) 3 TRANSMITTERS LOADED TA = +25°C C1–C4 = 1µF TRANSMITTER 4 TRANSMITTERS LOADS = 3kΩ || 2500pF LOADED 7.5 1 TRANSMITTER LOADED 11.0 7.0 1 TRANSMITTER LOADED MAX220-07 VOH (V) 8.0 12.0 MAX220-05 7.4 MAX220-04 8.5 TRANSMITTER SLEW RATE vs. LOAD CAPACITANCE MAX220-06 TRANSMITTER OUTPUT VOLTAGE (VOH) vs. VCC 0 500 1000 1500 2000 0 2500 5 10 15 20 25 30 35 40 45 50 CURRENT (mA) LOAD CAPACITANCE (pF) V+, V- WHEN EXITING SHUTDOWN (1µF CAPACITORS) MAX220-13 V+ O V- SHDN* 500ms/div *SHUTDOWN POLARITY IS REVERSED FOR NON MAX241 PARTS _______________________________________________________________________________________ 7 MAX220–MAX249 __________________________________________Typical Operating Characteristics MAX223/MAX230–MAX241 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ABSOLUTE MAXIMUM RATINGS—MAX225/MAX244–MAX249 Supply Voltage (VCC) ...............................................-0.3V to +6V Input Voltages TIN‚ ENA, ENB, ENR, ENT, ENRA, ENRB, ENTA, ENTB..................................-0.3V to (VCC + 0.3V) RIN .....................................................................................±25V TOUT (Note 3).....................................................................±15V ROUT ........................................................-0.3V to (VCC + 0.3V) Short Circuit (one output at a time) TOUT to GND ............................................................Continuous ROUT to GND............................................................Continuous Continuous Power Dissipation (TA = +70°C) 28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1W 40-Pin Plastic DIP (derate 11.11mW/°C above +70°C) ...611mW 44-Pin PLCC (derate 13.33mW/°C above +70°C) ...........1.07W Operating Temperature Ranges MAX225C_ _, MAX24_C_ _ ..................................0°C to +70°C MAX225E_ _, MAX24_E_ _ ...............................-40°C to +85°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering,10s) ..................................+300°C Note 4: Input voltage measured with transmitter output in a high-impedance state, shutdown, or VCC = 0V. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (MAX225, VCC = 5.0V ±5%; MAX244–MAX249, VCC = +5.0V ±10%, external capacitors C1–C4 = 1µF; TA = TMIN to TMAX; unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX UNITS 1.4 0.8 V 2 1.4 RS-232 TRANSMITTERS Input Logic Threshold Low Input Logic Threshold High Normal operation Logic Pull-Up/lnput Current Tables 1a–1d Data Rate Tables 1a–1d, normal operation Output Voltage Swing All transmitter outputs loaded with 3kΩ to GND Output Leakage Current (Shutdown) Tables 1a–1d Shutdown ±5 V 10 50 ±0.01 ±1 120 64 ±7.5 µA kbps V ENA, ENB, ENT, ENTA, ENTB = VCC, VOUT = ±15V ±0.01 ±25 VCC = 0V, VOUT = ±15V ±0.01 ±25 µA Transmitter Output Resistance VCC = V+ = V- = 0V, VOUT = ±2V (Note 4) 300 10M Ω Output Short-Circuit Current VOUT = 0V ±7 ±30 mA RS-232 RECEIVERS RS-232 Input Voltage Operating Range ±25 RS-232 Input Threshold Low VCC = 5V RS-232 Input Threshold High VCC = 5V RS-232 Input Hysteresis VCC = 5V RS-232 Input Resistance 1.3 2.4 0.2 0.5 1.0 V 3 5 7 kΩ 0.2 0.4 V IOUT = 3.2mA TTL/CMOS Output Voltage High IOUT = -1.0mA 3.5 VCC - 0.2 Sourcing VOUT = GND -2 -10 Shrinking VOUT = VCC 10 30 TTL/CMOS Output Leakage Current Normal operation, outputs disabled, Tables 1a–1d, 0V ≤ VOUT ≤ VCC, ENR_ = VCC V 1.8 TTL/CMOS Output Voltage Low TTL/CMOS Output Short-Circuit Current 8 0.8 V ±0.05 _______________________________________________________________________________________ V V mA ±0.10 µA +5V-Powered, Multichannel RS-232 Drivers/Receivers (MAX225, VCC = 5.0V ±5%; MAX244–MAX249, VCC = +5.0V ±10%, external capacitors C1–C4 = 1µF; TA = TMIN to TMAX; unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX UNITS POWER SUPPLY AND CONTROL LOGIC Operating Supply Voltage VCC Supply Current (Normal Operation) Shutdown Supply Current No load 3kΩ loads on all outputs MAX225 4.75 5.25 MAX244–MAX249 4.5 5.5 MAX225 10 20 MAX244–MAX249 11 30 MAX225 40 MAX244–MAX249 57 TA = +25°C 8 TA = TMIN to TMAX 50 Leakage current Control Input 25 ±1 Threshold low 1.4 Threshold high 0.8 2.4 1.4 5 10 30 V mA µA µA V AC CHARACTERISTICS Transition Slew Rate CL = 50pF to 2500pF, RL = 3kΩ to 7kΩ, VCC = 5V, TA = +25°C, measured from +3V to -3V or -3V to +3V V/µs Transmitter Propagation Delay TLL to RS-232 (Normal Operation), Figure 1 tPHLT 1.3 3.5 tPLHT 1.5 3.5 Receiver Propagation Delay TLL to RS-232 (Normal Operation), Figure 2 tPHLR 0.6 1.5 tPLHR 0.6 1.5 Receiver Propagation Delay TLL to RS-232 (Low-Power Mode), Figure 2 tPHLS 0.6 10 tPLHS 3.0 10 Transmitter + to - Propagation Delay Difference (Normal Operation) tPHLT - tPLHT 350 ns Receiver + to - Propagation Delay Difference (Normal Operation) tPHLR - tPLHR 350 ns µs µs µs Receiver-Output Enable Time, Figure 3 tER 100 500 ns Receiver-Output Disable Time, Figure 3 tDR 100 500 ns Transmitter Enable Time Transmitter Disable Time, Figure 4 tET tDT MAX246–MAX249 (excludes charge-pump startup) 5 µs MAX225/MAX245–MAX249 (includes charge-pump startup) 10 ms 100 ns Note 5: The 300Ω minimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or VCC = 0V is 10MΩ as is implied by the leakage specification. _______________________________________________________________________________________ 9 MAX220–MAX249 ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued) __________________________________________Typical Operating Characteristics MAX225/MAX244–MAX249 8 V+ AND V- LOADED EXTERNAL POWER SUPPLY 1µF CAPACITORS 12 10 40kb/s DATA RATE 8 TRANSMITTERS LOADED WITH 3kΩ 8 6 4 VCC = 5V EXTERNAL CHARGE PUMP 1µF CAPACITORS 8 TRANSMITTERS DRIVING 5kΩ AND 2000pF AT 20kbits/sec 2 0 -2 EITHER V+ OR V- LOADED 2 3 LOAD CAPACITANCE (nF) 4 5 40kb/sec 7.0 60kb/sec 6.0 V+ AND V- LOADED 100kb/sec 200kb/sec 5.5 -8 1 20kb/sec 7.5 V- LOADED V+ LOADED -10 0 8.0 6.5 -4 -6 2 VCC = 5V WITH ALL TRANSMITTERS DRIVEN LOADED WITH 5kΩ 10kb/sec 8.5 V+, V (V) OUTPUT VOLTAGE (V) 6 14 9.0 MAX220-11 VCC = 5V 4 10 10 MAX220-10 18 16 TRANSMITTER OUTPUT VOLTAGE (V+, V-) vs. LOAD CAPACITANCE AT DIFFERENT DATA RATES OUTPUT VOLTAGE vs. LOAD CURRENT FOR V+ AND V- MAX220-12 TRANSMITTER SLEW RATE vs. LOAD CAPACITANCE TRANSMITTER SLEW RATE (V/µs) MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers 0 5 10 15 20 25 LOAD CURRENT (mA) 30 ALL CAPACITIORS 1µF 5.0 35 0 1 2 3 LOAD CAPACITANCE (nF) ______________________________________________________________________________________ 4 5 +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 +3V 0V* +3V 50% 50% 50% 50% INPUT INPUT 0V OUTPUT V+ 0V V- OUTPUT VCC GND tPLHR tPLHS tPHLR tPHLS tPHLT tPLHT *EXCEPT FOR R2 ON THE MAX243 WHERE -3V IS USED. Figure 1. Transmitter Propagation-Delay Timing Figure 2. Receiver Propagation-Delay Timing EN RX OUT RX IN 1kΩ RX VCC - 2V SHDN +3V a) TEST CIRCUIT 0V 150pF EN INPUT OUTPUT DISABLE TIME (tDT) +3V 0V V+ +5V EN OUTPUT ENABLE TIME (tER) 0V -5V +3.5V V- RECEIVER OUTPUTS +0.8V a) TIMING DIAGRAM b) ENABLE TIMING +3V EN INPUT EN 0V 1 OR 0 TX OUTPUT DISABLE TIME (tDR) VOH RECEIVER OUTPUTS VOL 3kΩ 50pF VOH - 0.5V VCC - 2V VOL + 0.5V b) TEST CIRCUIT c) DISABLE TIMING Figure 3. Receiver-Output Enable and Disable Timing Figure 4. Transmitter-Output Disable Timing ______________________________________________________________________________________ 11 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers Table 1a. MAX245 Control Pin Configurations ENT ENR 0 0 Normal Operation 0 1 1 0 1 1 OPERATION STATUS TRANSMITTERS RECEIVERS All Active All Active Normal Operation All Active All 3-State Shutdown All 3-State All Low-Power Receive Mode Shutdown All 3-State All 3-State Table 1b. MAX245 Control Pin Configurations ENT ENR TRANSMITTERS OPERATION STATUS TA1–TA4 TB1–TB4 RECEIVERS RA1–RA5 RB1–RB5 0 0 Normal Operation All Active All Active All Active All Active 0 1 Normal Operation All Active All Active RA1–RA4 3-State, RA5 Active RB1–RB4 3-State, RB5 Active 1 0 Shutdown All 3-State All 3-State All Low-Power Receive Mode All Low-Power Receive Mode 1 1 Shutdown All 3-State All 3-State RA1–RA4 3-State, RA5 Low-Power Receive Mode RB1–RB4 3-State, RB5 Low-Power Receive Mode Table 1c. MAX246 Control Pin Configurations ENA 12 ENB OPERATION STATUS TRANSMITTERS TA1–TA4 TB1–TB4 RECEIVERS RA1–RA5 RB1–RB5 0 0 Normal Operation All Active All Active All Active All Active 0 1 Normal Operation All Active All 3-State All Active RB1–RB4 3-State, RB5 Active 1 0 Shutdown All 3-State All Active RA1–RA4 3-State, RA5 Active All Active 1 1 Shutdown All 3-State All 3-State RA1–RA4 3-State, RA5 Low-Power Receive Mode RB1–RB4 3-State, RA5 Low-Power Receive Mode ______________________________________________________________________________________ +5V-Powered, Multichannel RS-232 Drivers/Receivers TRANSMITTERS ENTA ENTB ENRA ENRB OPERATION STATUS RECEIVERS MAX247 TA1–TA4 TB1–TB4 RA1–RA4 RB1–RB5 MAX248 TA1–TA4 TB1–TB4 RA1–RA4 RB1–RB4 TA1–TA3 TB1–TB3 0 0 0 0 Normal Operation MAX249 All Active All Active All Active RA1–RA5 All Active RB1–RB5 0 0 0 1 Normal Operation All Active All Active All Active All 3-State, except RB5 stays active on MAX247 0 0 1 0 Normal Operation All Active All Active All 3-State All Active 0 0 1 1 Normal Operation All Active All Active All 3-State All 3-State, except RB5 stays active on MAX247 0 1 0 0 Normal Operation All Active All 3-State All Active All Active 0 1 0 1 Normal Operation All Active All 3-State All Active All 3-State, except RB5 stays active on MAX247 0 1 1 0 Normal Operation All Active All 3-State All 3-State All Active 0 1 1 1 Normal Operation All Active All 3-State All 3-State All 3-State, except RB5 stays active on MAX247 1 0 0 0 Normal Operation All 3-State All Active All Active All Active 1 0 0 1 Normal Operation All 3-State All Active All Active All 3-State, except RB5 stays active on MAX247 1 0 1 0 Normal Operation All 3-State All Active All 3-State All Active 1 0 1 1 Normal Operation All 3-State All Active All 3-State All 3-State, except RB5 stays active on MAX247 1 1 0 0 Shutdown All 3-State All 3-State Low-Power Receive Mode Low-Power Receive Mode 1 1 0 1 Shutdown All 3-State All 3-State Low-Power Receive Mode All 3-State, except RB5 stays active on MAX247 1 1 1 0 Shutdown All 3-State All 3-State All 3-State Low-Power Receive Mode 1 1 1 1 Shutdown All 3-State All 3-State All 3-State All 3-State, except RB5 stays active on MAX247 ______________________________________________________________________________________ 13 MAX220–MAX249 Table 1d. MAX247/MAX248/MAX249 Control Pin Configurations MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers _______________Detailed Description The MAX220–MAX249 contain four sections: dual charge-pump DC-DC voltage converters, RS-232 drivers, RS-232 receivers, and receiver and transmitter enable control inputs. Dual Charge-Pump Voltage Converter The MAX220–MAX249 have two internal charge-pumps that convert +5V to ±10V (unloaded) for RS-232 driver operation. The first converter uses capacitor C1 to double the +5V input to +10V on C3 at the V+ output. The second converter uses capacitor C2 to invert +10V to -10V on C4 at the V- output. A small amount of power may be drawn from the +10V (V+) and -10V (V-) outputs to power external circuitry (see the Typical Operating Characteristics section), except on the MAX225 and MAX245–MAX247, where these pins are not available. V+ and V- are not regulated, so the output voltage drops with increasing load current. Do not load V+ and V- to a point that violates the minimum ±5V EIA/TIA-232E driver output voltage when sourcing current from V+ and V- to external circuitry. When using the shutdown feature in the MAX222, MAX225, MAX230, MAX235, MAX236, MAX240, MAX241, and MAX245–MAX249, avoid using V+ and Vto power external circuitry. When these parts are shut down, V- falls to 0V, and V+ falls to +5V. For applications where a +10V external supply is applied to the V+ pin (instead of using the internal charge pump to generate +10V), the C1 capacitor must not be installed and the SHDN pin must be tied to VCC. This is because V+ is internally connected to VCC in shutdown mode. RS-232 Drivers The typical driver output voltage swing is ±8V when loaded with a nominal 5kΩ RS-232 receiver and VCC = +5V. Output swing is guaranteed to meet the EIA/TIA232E and V.28 specification, which calls for ±5V minimum driver output levels under worst-case conditions. These include a minimum 3kΩ load, VCC = +4.5V, and maximum operating temperature. Unloaded driver output voltage ranges from (V+ -1.3V) to (V- +0.5V). Input thresholds are both TTL and CMOS compatible. The inputs of unused drivers can be left unconnected since 400kΩ input pull-up resistors to VCC are built in (except for the MAX220). The pull-up resistors force the outputs of unused drivers low because all drivers invert. The internal input pull-up resistors typically source 12µA, except in shutdown mode where the pull-ups are disabled. Driver outputs turn off and enter a high-impedance state—where leakage current is typically microamperes (maximum 25µA)—when in shutdown 14 mode, in three-state mode, or when device power is removed. Outputs can be driven to ±15V. The powersupply current typically drops to 8µA in shutdown mode. The MAX220 does not have pull-up resistors to force the outputs of the unused drivers low. Connect unused inputs to GND or VCC. The MAX239 has a receiver three-state control line, and the MAX223, MAX225, MAX235, MAX236, MAX240, and MAX241 have both a receiver three-state control line and a low-power shutdown control. Table 2 shows the effects of the shutdown control and receiver threestate control on the receiver outputs. The receiver TTL/CMOS outputs are in a high-impedance, three-state mode whenever the three-state enable line is high (for the MAX225/MAX235/MAX236/MAX239– MAX241), and are also high-impedance whenever the shutdown control line is high. When in low-power shutdown mode, the driver outputs are turned off and their leakage current is less than 1µA with the driver output pulled to ground. The driver output leakage remains less than 1µA, even if the transmitter output is backdriven between 0V and (VCC + 6V). Below -0.5V, the transmitter is diode clamped to ground with 1kΩ series impedance. The transmitter is also zener clamped to approximately V CC + 6V, with a series impedance of 1kΩ. The driver output slew rate is limited to less than 30V/µs as required by the EIA/TIA-232E and V.28 specifications. Typical slew rates are 24V/µs unloaded and 10V/µs loaded with 3Ω and 2500pF. RS-232 Receivers EIA/TIA-232E and V.28 specifications define a voltage level greater than 3V as a logic 0, so all receivers invert. Input thresholds are set at 0.8V and 2.4V, so receivers respond to TTL level inputs as well as EIA/TIA-232E and V.28 levels. The receiver inputs withstand an input overvoltage up to ±25V and provide input terminating resistors with Table 2. Three-State Control of Receivers PART SHDN SHDN EN(R) RECEIVERS X Low High EN __ High Impedance Active High Impedance MAX223 __ Low High High MAX225 __ __ __ Low High High Impedance Active MAX235 MAX236 MAX240 Low Low High __ __ Low High X High Impedance Active High Impedance ______________________________________________________________________________________ +5V-Powered, Multichannel RS-232 Drivers/Receivers The receiver input hysteresis is typically 0.5V with a guaranteed minimum of 0.2V. This produces clear output transitions with slow-moving input signals, even with moderate amounts of noise and ringing. The receiver propagation delay is typically 600ns and is independent of input swing direction. Low-Power Receive Mode The low-power receive-mode feature of the MAX223, MAX242, and MAX245–MAX249 puts the IC into shutdown mode but still allows it to receive information. This is important for applications where systems are periodically awakened to look for activity. Using low-power receive mode, the system can still receive a signal that will activate it on command and prepare it for communication at faster data rates. This operation conserves system power. Negative Threshold—MAX243 The MAX243 is pin compatible with the MAX232A, differing only in that RS-232 cable fault protection is removed on one of the two receiver inputs. This means that control lines such as CTS and RTS can either be driven or left floating without interrupting communication. Different cables are not needed to interface with different pieces of equipment. The input threshold of the receiver without cable fault protection is -0.8V rather than +1.4V. Its output goes positive only if the input is connected to a control line that is actively driven negative. If not driven, it defaults to the 0 or “OK to send” state. Normally‚ the MAX243’s other receiver (+1.4V threshold) is used for the data line (TD or RD)‚ while the negative threshold receiver is connected to the control line (DTR‚ DTS‚ CTS‚ RTS, etc.). Other members of the RS-232 family implement the optional cable fault protection as specified by EIA/TIA232E specifications. This means a receiver output goes high whenever its input is driven negative‚ left floating‚ or shorted to ground. The high output tells the serial communications IC to stop sending data. To avoid this‚ the control lines must either be driven or connected with jumpers to an appropriate positive voltage level. Shutdown—MAX222–MAX242 On the MAX222‚ MAX235‚ MAX236‚ MAX240‚ and MAX241‚ all receivers are disabled during shutdown. On the MAX223 and MAX242‚ two receivers continue to operate in a reduced power mode when the chip is in shutdown. Under these conditions‚ the propagation delay increases to about 2.5µs for a high-to-low input transition. When in shutdown, the receiver acts as a CMOS inverter with no hysteresis. The MAX223 and MAX242 also have a receiver output enable input (EN for the MAX242 and EN for the MAX223) that allows receiver output control independent of SHDN (SHDN for MAX241). With all other devices‚ SHDN (SHDN for MAX241) also disables the receiver outputs. The MAX225 provides five transmitters and five receivers‚ while the MAX245 provides ten receivers and eight transmitters. Both devices have separate receiver and transmitter-enable controls. The charge pumps turn off and the devices shut down when a logic high is applied to the ENT input. In this state, the supply current drops to less than 25µA and the receivers continue to operate in a low-power receive mode. Driver outputs enter a high-impedance state (three-state mode). On the MAX225‚ all five receivers are controlled by the ENR input. On the MAX245‚ eight of the receiver outputs are controlled by the ENR input‚ while the remaining two receivers (RA5 and RB5) are always active. RA1–RA4 and RB1–RB4 are put in a three-state mode when ENR is a logic high. Receiver and Transmitter Enable Control Inputs The MAX225 and MAX245–MAX249 feature transmitter and receiver enable controls. The receivers have three modes of operation: full-speed receive (normal active)‚ three-state (disabled)‚ and lowpower receive (enabled receivers continue to function at lower data rates). The receiver enable inputs control the full-speed receive and three-state modes. The transmitters have two modes of operation: full-speed transmit (normal active) and three-state (disabled). The transmitter enable inputs also control the shutdown mode. The device enters shutdown mode when all transmitters are disabled. Enabled receivers function in the low-power receive mode when in shutdown. ______________________________________________________________________________________ 15 MAX220–MAX249 nominal 5kΩ values. The receivers implement Type 1 interpretation of the fault conditions of V.28 and EIA/TIA-232E. MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers Tables 1a–1d define the control states. The MAX244 has no control pins and is not included in these tables. The MAX246 has ten receivers and eight drivers with two control pins, each controlling one side of the device. A logic high at the A-side control input (ENA) causes the four A-side receivers and drivers to go into a three-state mode. Similarly, the B-side control input (ENB) causes the four B-side drivers and receivers to go into a three-state mode. As in the MAX245, one Aside and one B-side receiver (RA5 and RB5) remain active at all times. The entire device is put into shutdown mode when both the A and B sides are disabled (ENA = ENB = +5V). The MAX247 provides nine receivers and eight drivers with four control pins. The ENRA and ENRB receiver enable inputs each control four receiver outputs. The ENTA and ENTB transmitter enable inputs each control four drivers. The ninth receiver (RB5) is always active. The device enters shutdown mode with a logic high on both ENTA and ENTB. The MAX249 provides ten receivers and six drivers with four control pins. The ENRA and ENRB receiver enable inputs each control five receiver outputs. The ENTA and ENTB transmitter enable inputs control three drivers each. There is no always-active receiver. The device enters shutdown mode and transmitters go into a three-state mode with a logic high on both ENTA and ENTB. In shutdown mode, active receivers operate in a low-power receive mode at data rates up to 20kbits/sec. __________Applications Information Figures 5 through 25 show pin configurations and typical operating circuits. In applications that are sensitive to power-supply noise, VCC should be decoupled to ground with a capacitor of the same value as C1 and C2 connected as close as possible to the device. The MAX248 provides eight receivers and eight drivers with four control pins. The ENRA and ENRB receiver enable inputs each control four receiver outputs. The ENTA and ENTB transmitter enable inputs control four drivers each. This part does not have an always-active receiver. The device enters shutdown mode and transmitters go into a three-state mode with a logic high on both ENTA and ENTB. 16 ______________________________________________________________________________________ +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 +5V INPUT C3 TOP VIEW C5 C1+ 1 16 VCC V+ 2 15 GND C1- 3 14 T1OUT MAX220 MAX232 MAX232A C2+ 4 C2- 5 1 C1 C2 13 R1IN 11 T1IN T2OUT 7 TTL/CMOS INPUTS 10 T2IN 9 R2IN 8 R2OUT DIP/SO DEVICE MAX220 MAX232 MAX232A -10V C4 T1OUT 14 RS-232 OUTPUTS 400kΩ 10 T2IN T2OUT 7 R1IN 13 TTL/CMOS OUTPUTS C5 4.7 1.0 0.1 6 V- +5V 12 R1OUT CAPACITANCE (µF) C1 C2 C3 C4 4.7 4.7 10 10 1.0 1.0 1.0 1.0 0.1 0.1 0.1 0.1 V+ 2 +10V 3 C14 C2+ +10V TO -10V 5 C2- VOLTAGE INVERTER +5V 400kΩ 11 T1IN 12 R1OUT V- 6 16 VCC +5V TO +10V VOLTAGE DOUBLER C1+ RS-232 INPUTS 5kΩ R2IN 8 9 R2OUT 5kΩ GND 15 Figure 5. MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit +5V INPUT C3 ALL CAPACITORS = 0.1µF TOP VIEW C5 17 VCC 3 +10V C1+ +5V TO +10V V+ 4 C1- VOLTAGE DOUBLER 5 C2+ 7 -10V +10V TO -10V V6 C2C4 VOLTAGE INVERTER 2 (N.C.) EN 1 (N.C.) EN 1 C1+ 2 19 VCC C1+ 2 17 VCC V+ 3 18 GND V+ 3 16 GND C1- 4 17 T1OUT C1- 4 15 T1OUT C2+ 5 14 R1IN C2- 6 C2+ 5 18 SHDN MAX222 MAX242 C2- 6 13 R1OUT V- 7 12 T1IN T2OUT 8 11 T2IN R2IN 9 10 R2OUT DIP/SO MAX222 MAX242 C2 +5V 400kΩ 12 T1IN 16 N.C. 15 R1IN V- 7 T2OUT C1 20 SHDN 14 R1OUT 8 13 N.C. R2IN 9 12 T1IN R2OUT 10 11 T2IN TTL/CMOS INPUTS (EXCEPT MAX220) T1OUT 15 +5V 400kΩ 11 T2IN T2OUT 8 13 R1OUT R1IN 14 TTL/CMOS OUTPUTS SSOP RS-232 INPUTS 5kΩ R2IN 9 10 R2OUT 1 (N.C.) EN ( ) ARE FOR MAX222 ONLY. PIN NUMBERS IN TYPICAL OPERATING CIRCUIT ARE FOR DIP/SO PACKAGES ONLY. RS-232 OUTPUTS (EXCEPT MAX220) 5kΩ SHDN GND 18 16 Figure 6. MAX222/MAX242 Pin Configurations and Typical Operating Circuit ______________________________________________________________________________________ 17 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 0.1 +5V 28 VCC 27 VCC 400kΩ T1IN 3 ENR 1 28 VCC ENR 2 27 VCC T1IN 3 26 ENT T2IN 4 25 T3IN R1OUT 5 MAX225 24 T4IN R2OUT 6 23 T5IN R3OUT 7 22 R4OUT R3IN 21 R5OUT 8 R2IN 9 20 R5IN R1IN 10 19 R4IN T1OUT 11 18 T3OUT T2OUT 12 17 T4OUT GND 13 16 T5OUT GND 14 15 T5OUT SO T1OUT +5V 11 400kΩ T2IN 4 T2OUT +5V 12 400kΩ T3IN 25 T3OUT +5V 18 400kΩ T4IN 24 T4OUT +5V 17 400kΩ T5OUT T5IN 23 ENT 26 T5OUT R1OUT 5 R1IN 16 15 10 5kΩ R2IN R2OUT 6 9 5kΩ R3OUT 7 MAX225 FUNCTIONAL DESCRIPTION 5 RECEIVERS 5 TRANSMITTERS 2 CONTROL PINS 1 RECEIVER ENABLE (ENR) 1 TRANSMITTER ENABLE (ENT) R3IN 5kΩ R4OUT 22 R4IN R5OUT R5IN 5kΩ 1 2 ENR ENR GND 13 GND 14 Figure 7. MAX225 Pin Configuration and Typical Operating Circuit 18 19 5kΩ 21 PINS (ENR, GND, VCC, T5OUT) ARE INTERNALLY CONNECTED. CONNECT EITHER OR BOTH EXTERNALLY. T5OUT IS A SINGLE DRIVER. 8 ______________________________________________________________________________________ 20 +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 +5V INPUT TOP VIEW 1.0µF 12 11 VCC +5V TO +10V VOLTAGE DOUBLER C1+ 1.0µF 14 C115 C2+ 1.0µF 16 C2- 1.0µF V+ +10V TO -10V VOLTAGE INVERTER V- 13 17 1.0µF +5V 400kΩ 7 T1IN T3OUT 1 28 T4OUT T1OUT 2 27 R3IN T2OUT 3 25 SHDN (SHDN) R2OUT 5 T2IN 6 24 EN (EN) MAX223 MAX241 T1IN 7 400kΩ 6 T2IN GND 10 19 R5OUT* VCC 11 18 R5IN* C1+ 12 17 V- V+ 13 16 C2- C1- 14 15 C2+ Wide SO/ SSOP RS-232 OUTPUTS T3 T3OUT 1 +5V 400kΩ 21 T4IN 20 T3IN T2OUT 3 400kΩ 20 T3IN 23 R4IN* R1IN 9 T2 +5V TTL/CMOS INPUTS 22 R4OUT* R1OUT 8 T1OUT 2 +5V 26 R3OUT R2IN 4 T1 21 T4IN 8 R1OUT T4 T4OUT 28 R1 R1IN 9 5kΩ 5 R2OUT R2 R2IN 4 5kΩ LOGIC OUTPUTS 26 R3OUT R3 R3IN 27 5kΩ 22 R4OUT R4 R4IN RS-232 INPUTS 23 5kΩ 19 R5OUT R5 *R4 AND R5 IN MAX223 REMAIN ACTIVE IN SHUTDOWN NOTE: PIN LABELS IN ( ) ARE FOR MAX241 24 EN (EN) GND R5IN 18 5kΩ SHDN 25 (SHDN) 10 Figure 8. MAX223/MAX241 Pin Configuration and Typical Operating Circuit ______________________________________________________________________________________ 19 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT 1.0µF TOP VIEW 1.0µF T3OUT 20 T4OUT 1 T1OUT 2 19 T5IN T2OUT 3 18 N.C. T2IN 4 1.0µF MAX230 11 +10V TO -10V C2+ 12 C2- VOLTAGE INVERTER 15 T4IN VCC 7 14 T3IN C1+ 8 13 V- V+ 9 12 C2- C1- 10 11 C2+ 13 1.0µF 400kΩ 5 T1IN T1OUT 2 T1 +5V 16 T5OUT GND 6 V- 1.0µF +5V 17 SHDN T1IN 5 7 VCC V+ 9 +5V TO +10V VOLTAGE DOUBLER 8 C1+ 10 C1- 400kΩ 4 T2IN T2OUT 3 T2 +5V 400kΩ TTL/CMOS INPUTS 14 T3IN T3OUT 1 T3 RS-232 OUTPUTS +5V 400kΩ 15 T4IN T4OUT 20 T4 +5V 400kΩ DIP/SO 19 T5IN T5OUT 16 T5 N.C. x 18 17 GND SHDN 6 Figure 9. MAX230 Pin Configuration and Typical Operating Circuit +5V INPUT TOP VIEW +7.5V TO +12V 1.0µF 13 (15) 1 2 1.0µF C+ 1 CV- 2 C+ 1 16 V+ 13 VCC C- 2 15 VCC V- 3 12 GND 3 T2OUT 4 14 V+ MAX231 11 T1OUT T2OUT 4 9 R1OUT T2IN 7 8 T1IN R2OUT 6 8 10 T1IN N.C. 8 9 N.C. DIP SO V- T1IN C2 1.0µF (13) RS-232 OUTPUTS 400kΩ (11) 7 T2IN 9 R1OUT T2OUT 4 T2 R1IN 10 R1 TTL/CMOS OUTPUTS 5kΩ 6 R2OUT R2IN 5 R2 (12) RS-232 INPUTS GND 12 (14) Figure 10. MAX231 Pin Configurations and Typical Operating Circuit 20 (16) 3 T1OUT 11 T1 5kΩ PIN NUMBERS IN ( ) ARE FOR SO PACKAGE 14 +5V TTL/CMOS INPUTS 11 R1OUT T2IN 7 V+ 400kΩ (10) 12 R1IN R2IN 5 10 R1IN R2IN 5 R2OUT 6 13 T1OUT C1- VCC +12V TO -12V VOLTAGE CONVERTER +5V 14 GND MAX231 C1+ ______________________________________________________________________________________ +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 +5V INPUT 1.0µF TOP VIEW 7 VCC +5V 400kΩ T2IN 1 T1IN 2 19 R2IN R1OUT 3 17 V- MAX233 MAX233A 15 C2+ VCC 7 14 V+ (C1-) GND 9 12 V- (C2+) (V-) CS- 10 RS-232 OUTPUTS 400kΩ 1 T2IN 3 R1OUT T2OUT 18 R1IN 4 11 C2+ (C2-) DIP/SO 5kΩ TTL/CMOS OUTPUTS 20 R2OUT 13 C1- (C1+) 8 +5V 16 C2- GND 6 (V+) C1+ T1OUT 5 T1IN TTL/CMOS INPUTS 18 T2OUT R1IN 4 T1OUT 5 2 20 R2OUT 8 (13) DO NOT MAKE CONNECTIONS TO 13 (14) THESE PINS 12 (10) INTERNAL -10 17 POWER SUPPLY INTERNAL +10V POWER SUPPLY RS-232 OUTPUTS R2IN 19 5kΩ C2+ 11 (12) C1+ C1- C2+ V- C2- V14 (8) V+ C2GND 15 16 10 (11) GND 6 9 ( ) ARE FOR SO PACKAGE ONLY. Figure 11. MAX233/MAX233A Pin Configuration and Typical Operating Circuit +5V INPUT 1.0µF TOP VIEW 7 1.0µF 9 10 1.0µF T1OUT 1 16 T3OUT T2OUT 2 C1C2+ 11 C2- 12 V- VCC 6 11 C2- C1+ 7 10 C2+ 9 V+ 8 4 T1IN 13 T3IN GND 5 C1- +10V TO -10V VOLTAGE INVERTER 1.0µF 8 V+ V- 12 1.0µF 400kΩ 14 T4IN MAX234 6 VCC +5V TO +10V VOLTAGE DOUBLER +5V 15 T4OUT T2IN 3 T1IN 4 C1+ T1 T1OUT 1 +5V 400kΩ 3 T2IN T2 T2OUT 3 +5V TTL/CMOS INPUTS RS-232 OUTPUTS 400kΩ 13 T3IN T3 T3OUT 16 +5V DIP/SO 400kΩ 14 T4IN T4 T4OUT 15 GND 5 Figure 12. MAX234 Pin Configuration and Typical Operating Circuit ______________________________________________________________________________________ 21 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT TOP VIEW 1.0µF 12 +5V VCC 400kΩ 8 T1IN T1 T1OUT 3 T2 T2OUT 4 +5V 400kΩ 7 T2IN +5V 400kΩ TTL/CMOS INPUTS T4OUT 1 24 R3IN T3OUT 2 23 R3OUT T1OUT 3 22 T5IN T2OUT 4 21 SHDN R2IN 5 MAX235 R2OUT 6 15 T3IN T3OUT 2 T3 +5V 400kΩ 16 T4IN 22 T5IN T4OUT 1 T4 +5V 20 EN 400kΩ T5OUT 19 T5 19 T5OUT T2IN 7 18 R4IN T1IN 8 17 R4OUT R1OUT 9 16 T4IN R1IN 10 15 T3IN GND 11 14 R5OUT VCC 12 13 R5IN DIP 9 R1OUT R1IN 10 T1 5kΩ 6 R2OUT R2IN 5 R2 5kΩ TTL/CMOS OUTPUTS 23 R3OUT R3IN 24 R3 5kΩ 17 R4OUT R4IN 18 R4 5kΩ 14 R5OUT R5IN 13 R5 5kΩ 20 EN SHDN 21 GND 11 Figure 13. MAX235 Pin Configuration and Typical Operating Circuit 22 RS-232 OUTPUTS ______________________________________________________________________________________ RS-232 INPUTS +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 TOP VIEW +5V INPUT 1.0µF 9 10 1.0µF 12 13 1.0µF 1.0µF VCC +5V TO +10V VOLTAGE DOUBLER C1+ C1- V+ C2+ V- +10V TO -10V VOLTAGE INVERTER 14 C2- 11 15 1.0µF +5V 400kΩ 7 T1IN T3OUT 1 24 T4OUT T1OUT 2 23 R2IN T2OUT 3 22 R2OUT R1IN 4 21 SHDN R1OUT 5 MAX236 +5V 400kΩ 6 T2IN TTL/CMOS INPUTS 19 T4IN T1IN 7 18 T3IN GND 8 17 R3OUT VCC 9 16 R3IN C1+ 10 15 V- V+ 11 14 C2- C1- 12 13 C2+ T2OUT T2 3 RS-232 OUTPUTS +5V 400kΩ 20 EN T2IN 6 T1OUT 2 T1 18 T3IN T3OUT 1 T3 +5V 400kΩ 19 T4IN 5 R1OUT T4OUT 24 T4 R1IN 4 R1 5kΩ DIP/SO TTL/CMOS OUTPUTS 22 R2OUT R2IN R2 23 RS-232 INPUTS 5kΩ 17 R3OUT R3IN R3 16 5kΩ 20 EN SHDN 21 GND 8 Figure 14. MAX236 Pin Configuration and Typical Operating Circuit ______________________________________________________________________________________ 23 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers TOP VIEW +5V INPUT 1.0µF 10 1.0µF 12 13 1.0µF 14 1.0µF 9 VCC +5V TO +10V VOLTAGE DOUBLER C1+ C1C2+ V+ V- +10V TO -10V VOLTAGE INVERTER C2- 11 15 1.0µF +5V 400kΩ T3OUT 1 24 T4OUT T1OUT 2 23 R2IN T2OUT 3 22 R2OUT R1IN 4 R1OUT 5 7 T1IN 400kΩ 6 T2IN 21 T5IN MAX237 T2IN 6 +5V 20 T5OUT 19 T4IN T1IN 7 18 T3IN GND 8 17 R3OUT VCC 9 16 R3IN C1+ 10 15 V- V+ 11 14 C2- C1- 12 13 C2+ T1OUT 2 T1 +5V T2OUT T2 3 400kΩ TTL/CMOS INPUTS 18 T3IN +5V T3OUT 1 T3 RS-232 OUTPUTS 400kΩ 19 T4IN +5V T4OUT 24 T4 400kΩ 21 T5IN DIP/SO 5 R1OUT T5OUT 20 T5 R1 R1IN 4 5kΩ TTL/CMOS OUTPUTS 22 R2OUT R2 R2IN 23 5kΩ 17 R3OUT R3 R3IN 5kΩ GND 8 Figure 15. MAX237 Pin Configuration and Typical Operating Circuit 24 ______________________________________________________________________________________ 16 RS-232 INPUTS +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 TOP VIEW +5V INPUT 1.0µF 1.0µF 9 10 1.0µF 12 13 1.0µF 14 VCC +5V TO +10V VOLTAGE DOUBLER C1+ C1- V+ C2+ V- +10V TO -10V VOLTAGE INVERTER C2- 11 15 1.0µF +5V 400kΩ T2OUT 1 24 T3OUT T1OUT 2 23 R3IN R2IN 3 T1OUT 2 T1 +5V 400kΩ 22 R3OUT 18 T2IN 21 T4IN R2OUT 4 T1IN 5 5 T1IN MAX238 20 T4OUT R1OUT 6 19 T3IN R1IN 7 18 T2IN GND 8 17 R4OUT VCC 9 16 R4IN C1+ 10 15 V- V+ 11 14 C2- C1- 12 13 C2+ T2OUT T2 1 +5V TTL/CMOS INPUTS RS-232 OUTPUTS 400kΩ 19 T3IN T3OUT 24 T3 +5V 400kΩ 21 T4IN 6 R1OUT T4OUT 20 T4 R1 R1IN 7 5kΩ DIP/SO 4 R2OUT R2 TTL/CMOS OUTPUTS R2IN 3 RS-232 INPUTS 5kΩ 22 R3OUT R3 R3IN 23 5kΩ 17 R4OUT R4 R4IN 16 5kΩ GND 8 Figure 16. MAX238 Pin Configuration and Typical Operating Circuit ______________________________________________________________________________________ 25 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers TOP VIEW 7.5V TO 13.2V INPUT +5V INPUT 1.0µF 4 6 1.0µF 7 5 VCC C1+ V+ V- +10V TO -10V VOLTAGE INVERTER C1- 8 1.0µF +5V 400kΩ 24 T1IN R1OUT 1 24 T1IN R1IN 2 23 T2IN GND 3 22 R2OUT VCC 4 V+ 5 +5V 400kΩ TTL/CMOS INPUTS 23 T2IN 19 T1OUT C- 7 18 R3IN V- 8 17 R3OUT R5IN 9 16 T3IN R5OUT 10 15 N.C. R4OUT 11 14 EN 16 T3IN 1 R1OUT R1 R1IN 2 5kΩ 22 R2OUT R2 R2IN 21 5kΩ DIP/SO TTL/CMOS OUTPUTS 17 R3OUT R3 R3IN 18 5kΩ 11 R4OUT R4 R4IN 12 5kΩ 10 R5OUT R5 R5IN 5kΩ 14 EN N.C. GND 3 Figure 17. MAX239 Pin Configuration and Typical Operating Circuit 26 RS-232 OUTPUTS T3OUT 13 T3 13 T3OUT R4IN 12 20 400kΩ 20 T2OUT C+ 6 T2OUT T2 +5V 21 R2IN MAX239 T1OUT 19 T1 ______________________________________________________________________________________ 9 15 RS-232 INPUTS +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 +5V INPUT 1.0µF TOP VIEW 25 19 VCC +5V TO +10V VOLTAGE DOUBLER C1+ 1.0µF 27 C128 C2+ 1.0µF 29 C2- 1.0µF V+ +5V TO -10V VOLTAGE INVERTER V- 26 30 1.0µF +5V 400kΩ 15 T1IN T1 +5V 400kΩ N.C. R2IN N.C. T2OUT T1OUT T3OUT T4OUT R3IN R3OUT T5IN N.C. 14 T2IN T2 +5V 11 10 9 8 7 6 5 4 3 2 1 TTL/CMOS INPUTS T3 12 13 14 15 16 17 18 19 20 21 22 MAX240 44 43 42 41 40 39 38 37 36 35 34 N.C. SHDN EN T5OUT R4IN R4OUT T4IN T3IN R5OUT R5IN N.C. +5V 2 T5IN 16 R1OUT N.C. N.C. C1+ V+ C1C2+ C2 VN.C. N.C. N.C. 8 T3OUT 6 RS-232 OUTPUTS 400kΩ 38 T4IN T4 T4OUT 5 400kΩ T5 R1 T5OUT 41 R1IN 17 5kΩ 13 R2OUT R2 R2IN 10 5kΩ 23 24 25 26 27 28 29 30 31 32 33 N.C. R2OUT T2IN T1IN R1OUT R1IN GND VCC N.C. N.C. N.C. T2OUT 400kΩ 37 T3IN +5V T1OUT 7 TTL/CMOS OUTPUTS 3 R3OUT R3 R3IN 4 5kΩ RS-232 INPUTS Plastic FP 39 R4OUT R4 R4IN 40 5kΩ 36 R5OUT R5 R5IN 35 5kΩ 42 EN GND SHDN 43 18 Figure 18. MAX240 Pin Configuration and Typical Operating Circuit ______________________________________________________________________________________ 27 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT TOP VIEW 0.1µF 1 C1+ 1 16 VCC V+ 2 15 GND C1- 3 14 T1OUT C2+ 4 MAX243 C2- 5 0.1µF 3 C14 C2+ 0.1µF 5 C2- 16 VCC +5V TO +10V VOLTAGE DOUBLER +10V TO -10V VOLTAGE INVERTER 11 T1IN T2OUT 7 10 T2IN 9 V- 2 +10V 6 -10V 0.1µF 400kΩ 13 R1IN V- 6 V+ +5V T1OUT 14 11 T1IN 12 R1OUT R2IN 8 C1+ ALL CAPACITORS = 0.1µF 0.1µF +5V TTL/CMOS INPUTS RS-232 OUTPUTS 400kΩ T2OUT 7 10 T2IN R2OUT DIP/SO R1IN 13 12 R1OUT TTL/CMOS OUTPUTS 9 R2OUT RECEIVER INPUT ≤ -3 V OPEN ≥ +3V R1 OUTPUT HIGH HIGH LOW R2 OUTPUT HIGH LOW LOW R2IN 8 5kΩ GND 15 Figure 19. MAX243 Pin Configuration and Typical Operating Circuit 28 RS-232 INPUTS 5kΩ ______________________________________________________________________________________ +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 +5V TOP VIEW 1µF 1µF 20 VCC +5V TO +10V VOLTAGE DOUBLER 5 4 3 2 1 TB4OUT 1µF RB5IN TB3OUT TB2OUT TB1OUT TA1OUT TA2OUT TA3OUT TA4OUT RA4IN 6 RA5IN 21 1µF 44 43 42 41 40 C1+ 23 C124 C2+ 25 C2- 22 V+ 26 V- 1µF +10V TO -10V VOLTAGE INVERTER 2 TA1OUT +5V +5V TB1OUT 44 400kΩ RA3IN 7 39 RB4IN RA2IN 8 38 RB3IN RA1IN 9 37 RB2IN RA1OUT 10 36 RB1IN RA2OUT 11 35 RB1OUT RA3OUT 12 RA4OUT 13 33 RB3OUT RA5OUT 14 32 RB4OUT TA1IN 15 31 RB5OUT TA2IN 16 30 TB1IN TA3IN 17 29 TB2IN MAX244 TB3IN TB4IN V- C2- C2+ C1- V+ GND VCC 19 20 21 22 23 24 25 26 27 28 C1+ 18 TA4IN 34 RB2OUT PLCC 15 TA1IN 2 TA2OUT TB1IN 30 +5V +5V 16 TA2IN TB2IN 29 3 TA3OUT +5V +5V TB3OUT 42 400kΩ 17 TA3IN TB3IN 28 4 TA4OUT +5V +5V TB4OUT 41 400kΩ 18 TA4IN TB4IN 27 9 RA1IN RB1IN 36 5kΩ 5kΩ RB1OUT 35 10 RA1OUT 8 RA2IN MAX249 FUNCTIONAL DESCRIPTION 10 RECEIVERS 5 A-SIDE RECEIVER 5 B-SIDE RECEIVER 8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS NO CONTROL PINS TB2OUT 43 400kΩ RB2IN 37 5kΩ 5kΩ 11 RA2OUT RB2OUT 34 7 RA3IN RB3IN 38 5kΩ 5kΩ 12 RA3OUT RB3OUT 33 6 RA4IN RB4IN 39 5kΩ 5kΩ RB4OUT 32 13 RA4OUT 5 RA5IN RB5IN 40 5kΩ 5kΩ 14 RA5OUT GND 19 RB5OUT 31 Figure 20. MAX244 Pin Configuration and Typical Operating Circuit ______________________________________________________________________________________ 29 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 1µF 40 VCC ENR 1 40 VCC TA1IN 2 39 ENT TA2IN 3 38 TB1IN TA3IN 4 37 TB2IN TA4IN 5 36 TB3IN RA5OUT 6 35 TB4IN RA4OUT 7 34 RB5OUT MAX245 RA3OUT 8 33 RB4OUT RA2OUT 9 32 RB3OUT RA1OUT 10 31 RB2OUT RA1IN 11 30 RB1OUT RA2IN 12 29 RB1IN RA3IN 13 28 RB2IN RA4IN 14 27 RB3IN RA5IN 15 26 RB4IN TA1OUT 16 25 RB5IN TA2OUT 17 24 TB1OUT TA3OUT 18 TA4OUT GND 23 TB2OUT 19 22 TB3OUT 20 21 TB4OUT 16 TA1OUT +5V +5V TB1IN 38 2 TA1IN 17 TA2OUT +5V +5V TB2IN 37 3 TA2IN 18 TA3OUT +5V +5V TB3OUT 22 400kΩ 4 TA3IN TB3IN 36 19 TA4OUT +5V +5V TB4OUT 21 400kΩ 5 TA4IN TB4IN 35 1 ENR ENT 39 11 RA1IN RB1IN 29 5kΩ 5kΩ 10 RA1OUT RB1OUT 30 RB2IN 28 12 RA2IN 5kΩ 5kΩ RB2OUT 31 RB3IN 27 13 RA3IN 5kΩ 5kΩ MAX245 FUNCTIONAL DESCRIPTION 10 RECEIVERS 5 A-SIDE RECEIVERS (RA5 ALWAYS ACTIVE) 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE) 8 TRANSMITTTERS 4 A-SIDE TRANSMITTERS 2 CONTROL PINS 1 RECEIVER ENABLE (ENR) 1 TRANSMITTER ENABLE (ENT) TB2OUT 23 400kΩ 9 RA2OUT DIP TB1OUT 24 400kΩ 8 RA3OUT RB3OUT 32 14 RA4IN RB4IN 26 5kΩ 5kΩ 7 RA4OUT RB4OUT 33 15 RA5IN RB5IN 25 5kΩ 5kΩ 6 RA5OUT RB5OUT 34 GND 20 Figure 21. MAX245 Pin Configuration and Typical Operating Circuit 30 ______________________________________________________________________________________ +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 +5V TOP VIEW 1µF ENA 1 40 VCC TA1IN 2 39 ENB TA2IN 3 38 TB1IN TA3IN 4 37 TB2IN TA4IN 5 36 TB3IN RA5OUT 6 35 TB4IN RA4OUT 7 34 RB5OUT RA3OUT 8 33 RB4OUT MAX246 RA2OUT 9 32 RB3OUT RA1OUT 10 31 RB2OUT RA1IN 11 30 RB1OUT RA2IN 12 29 RB1IN RA3IN 13 28 RB2IN RA4IN 14 27 RB3IN RA5IN 15 26 RB4IN TA1OUT 16 25 RB5IN TA2OUT 17 24 TB1OUT TA3OUT 18 23 TB2OUT TA4OUT 19 22 TB3OUT GND 20 21 TB4OUT DIP 40 VCC +5V +5V 16 TA1OUT TB1OUT 24 400kΩ 2 TA1IN TB1IN 38 +5V +5V 17 TA2OUT TB2OUT 23 400kΩ 3 TA2IN TB2IN 37 +5V +5V 18 TA3OUT TB3OUT 22 400kΩ 4 TA3IN TB3IN 36 +5V +5V TB4OUT 21 19 TA4OUT 400kΩ 5 TA4IN TB4IN 35 1 ENA ENB 39 RB1IN 29 11 RA1IN 5kΩ 5kΩ 10 RA1OUT RB1OUT 30 RB2IN 28 12 RA2IN 5kΩ 5kΩ 9 RA2OUT RB2OUT 31 13 RA3IN MAX246 FUNCTIONAL DESCRIPTION 10 RECEIVERS 5 A-SIDE RECEIVERS (RA5 ALWAYS ACTIVE) 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE) 8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS 2 CONTROL PINS ENABLE A-SIDE (ENA) ENABLE B-SIDE (ENB) RB3IN 27 5kΩ 5kΩ 8 RA3OUT RB3OUT 32 RB4IN 26 14 RA4IN 5kΩ 5kΩ 7 RA4OUT RB4OUT 33 RB5IN 25 15 RA5IN 5kΩ 6 RA5OUT 5kΩ RB5OUT 34 GND 20 Figure 22. MAX246 Pin Configuration and Typical Operating Circuit ______________________________________________________________________________________ 31 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 1µF 40 VCC +5V +5V 1 ENTA ENTA 1 40 VCC TA1IN 2 39 ENTB TA2IN 3 38 TB1IN TA3IN 4 37 TB2IN TA4IN 5 36 TB3IN RB5OUT 6 35 TB4IN RA4OUT 7 34 RB4OUT RA3OUT 8 33 RB3OUT MAX247 RA2OUT 9 32 RB2OUT RA1OUT 10 31 RB1OUT ENRA 11 30 ENRB RA1IN 12 29 RB1IN RA2IN 13 28 RB2IN RA3IN 14 27 RB3IN RA4IN 15 26 RB4IN TA1OUT 16 25 RB5IN TA2OUT 17 24 TB1OUT TA3OUT 18 23 TB2OUT TA4OUT 19 22 TB3OUT GND 20 21 TB4OUT ENTB 39 TB1OUT 24 16 TA1OUT 400kΩ TB1IN 38 2 TA1IN +5V +5V 17 TA2OUT TB2OUT 23 400kΩ 3 TA2IN TB2IN 37 +5V +5V TB3OUT 22 18 TA3OUT 400kΩ TB3IN 36 4 TA3IN +5V +5V TB4OUT 21 19 TA4OUT 400kΩ 5 TA4IN TB4IN 35 6 RB5OUT RB5IN 25 5kΩ RB1IN 29 12 RA1IN 5kΩ 5kΩ RB1OUT 31 10 RA1OUT RB2IN 28 13 RA2IN DIP 5kΩ 5kΩ MAX247 FUNCTIONAL DESCRIPTION 9 RECEIVERS 4 A-SIDE RECEIVERS 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE) 8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS 4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA) ENABLE RECEIVERr B-SIDE (ENTB) RB2OUT 32 9 RA2OUT RB3IN 27 14 RA3IN 5kΩ 5kΩ RB3OUT 33 8 RA3OUT RB4IN 26 15 RA4IN 5kΩ 5kΩ RB4OUT 34 7 RA4OUT 11 ENRA GND 20 Figure 23. MAX247 Pin Configuration and Typical Operating Circuit 32 ______________________________________________________________________________________ ENRB 30 +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX220–MAX249 TOP VIEW +5V 1µF 1µF 20 TA1OUT TB1OUT 6 5 4 3 2 1 44 43 42 41 40 1µF RB4IN TA2OUT TA4OUT TA3OUT TB3OUT TA4OUT TB2OUT RA3IN RA4IN 21 1µF C1+ 23 C124 C2+ 25 C2- VCC +5V TO +10V VOLTAGE DOUBLER V+ V- +5V 1 TA1OUT 39 RB3IN RA1IN 8 38 RB2IN ENRA 9 37 RB1IN RA1OUT 10 36 ENRB RA2OUT 11 35 RB1OUT RA3OUT 12 RA4OUT 13 33 RB3OUT TA1IN 14 32 RB4OUT TA2IN 15 31 TB1IN TA3IN 16 30 TB2IN 34 RB2OUT 29 TB3IN TB4IN ENTB V- C2- C2+ C1- V+ VCC 19 20 21 22 23 24 25 26 27 28 C1+ 18 GND 17 ENTA TA4IN MAX248 PLCC TB1OUT 44 400kΩ 14 TA1IN TB1IN 31 +5V +5V 2 TA2OUT TB2OUT 43 400kΩ 15 TA2IN TB2IN 30 +5V +5V TB3OUT 42 3 TA3OUT 400kΩ TB3IN 29 16 TA3IN +5V +5V 4 TA4OUT TB4OUT 41 400kΩ 17 TA4IN TB4IN 28 8 RA1IN RB1IN 37 5kΩ 5kΩ MAX248 FUNCTIONAL DESCRIPTION 8 RECEIVERS 4 A-SIDE RECEIVERS 4 B-SIDE RECEIVERS 8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS 4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA) ENABLE RECEIVER B-SIDE (ENTB) 1µF ENTB 27 +5V 7 26 +10V TO -10V VOLTAGE INVERTER 18 ENTA RA2IN 22 RB1OUT 35 10 RA1OUT RB2IN 38 7 RA2IN 5kΩ 5kΩ RB2OUT 34 11 RA2OUT RB3IN 39 6 RA3IN 5kΩ 5kΩ RB3OUT 33 12 RA3OUT RB4IN 40 5 RA4IN 5kΩ 5kΩ 13 RA4OUT 9 ENRA RB4OUT 32 GND 19 ENRB 36 Figure 24. MAX248 Pin Configuration and Typical Operating Circuit ______________________________________________________________________________________ 33 MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 1µF 1µF 20 3 2 1 44 43 42 41 40 RB5IN 4 1µF RB4IN TB1OUT TB3OUT TA1OUT TB2OUT TA2OUT 5 RA5IN 6 TA3OUT RA3IN RA4IN 21 1µF VCC +5V TO +10V VOLTAGE DOUBLER C1+ 23 C124 C2+ 25 C2- V+ V- +5V TB1OUT 44 1 TA1OUT 39 RB3IN RA1IN 8 38 RB2IN ENRA 9 37 RB1IN RA1OUT 10 36 ENRB RA2OUT 11 35 RB1OUT RA3OUT 12 RA4OUT 13 33 RB3OUT RA5OUT 14 32 RB4OUT MAX249 34 RB2OUT TA1IN 15 31 RB5OUT TA2IN 16 30 TB1IN 29 TB2IN TB3IN ENTB V- C2- C2+ V+ C1- VCC 19 20 21 22 23 24 25 26 27 28 C1+ 18 GND 17 ENTA TA3IN PLCC 400kΩ TB1IN 30 15 TA1IN +5V +5V TB2OUT 43 2 TA2OUT 400kΩ TB2IN 29 16 TA2IN +5V +5V TB3OUT 42 3 TA3OUT 400kΩ 17 TA3IN TB3IN 28 8 RA1IN RB1IN 37 5kΩ 5kΩ RB1OUT 35 10 RA1OUT RB2IN 38 7 RA2IN 5kΩ 5kΩ MAX249 FUNCTIONAL DESCRIPTION 10 RECEIVERS 5 A-SIDE RECEIVERS 5 B-SIDE RECEIVERS 6 TRANSMITTERS 3 A-SIDE TRANSMITTERS 3 B-SIDE TRANSMITTERS 4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA) ENABLE RECEIVER B-SIDE (ENTB) RB2OUT 34 11 RA2OUT RB3IN 39 6 RA3IN 5kΩ 5kΩ RB3OUT 33 12 RA3OUT RB4IN 40 5 RA4IN 5kΩ 5kΩ RB4OUT 32 13 RA4OUT RB5IN 41 4 RA5IN 5kΩ 5kΩ RB5OUT 31 14 RA5OUT 9 ENRA GND 19 Figure 25. MAX249 Pin Configuration and Typical Operating Circuit 34 1µF ENTB 27 +5V 7 26 +10V TO -10V VOLTAGE INVERTER 18 ENTA RA2IN 22 ______________________________________________________________________________________ ENRB 36 +5V-Powered, Multichannel RS-232 Drivers/Receivers MAX222CPN PART TEMP RANGE 0°C to +70°C 18 Plastic DIP PIN-PACKAGE PART MAX232AC/D TEMP RANGE 0°C to +70°C PIN-PACKAGE Dice* MAX222CWN 0°C to +70°C 18 Wide SO MAX232AEPE -40°C to +85°C 16 Plastic DIP MAX222C/D 0°C to +70°C Dice* MAX232AESE -40°C to +85°C 16 Narrow SO MAX222EPN -40°C to +85°C 18 Plastic DIP MAX232AEWE -40°C to +85°C 16 Wide SO MAX222EWN -40°C to +85°C 18 Wide SO MAX232AEJE -40°C to +85°C 16 CERDIP MAX222EJN -40°C to +85°C 18 CERDIP MAX232AMJE -55°C to +125°C 16 CERDIP MAX222MJN -55°C to +125°C 18 CERDIP MAX232AMLP -55°C to +125°C 20 LCC MAX223CAI 0°C to +70°C 28 SSOP MAX233CPP 0°C to +70°C 20 Plastic DIP MAX223CWI 0°C to +70°C 28 Wide SO MAX233EPP -40°C to +85°C 20 Plastic DIP MAX223C/D 0°C to +70°C Dice* MAX233ACPP 0°C to +70°C 20 Plastic DIP MAX223EAI -40°C to +85°C 28 SSOP MAX233ACWP 0°C to +70°C 20 Wide SO MAX223EWI -40°C to +85°C 28 Wide SO MAX233AEPP -40°C to +85°C 20 Plastic DIP MAX225CWI 0°C to +70°C 28 Wide SO MAX233AEWP -40°C to +85°C 20 Wide SO MAX225EWI -40°C to +85°C 28 Wide SO MAX234CPE 0°C to +70°C 16 Plastic DIP MAX230CPP 0°C to +70°C 20 Plastic DIP MAX234CWE 0°C to +70°C 16 Wide SO MAX230CWP 0°C to +70°C 20 Wide SO MAX234C/D 0°C to +70°C Dice* MAX230C/D 0°C to +70°C Dice* MAX234EPE -40°C to +85°C 16 Plastic DIP MAX230EPP -40°C to +85°C 20 Plastic DIP MAX234EWE -40°C to +85°C 16 Wide SO -40°C to +85°C 16 CERDIP 16 CERDIP MAX230EWP -40°C to +85°C 20 Wide SO MAX234EJE MAX230EJP -40°C to +85°C 20 CERDIP MAX234MJE -55°C to +125°C MAX230MJP -55°C to +125°C 20 CERDIP MAX235CPG 0°C to +70°C 24 Wide Plastic DIP MAX231CPD 0°C to +70°C 14 Plastic DIP MAX235EPG -40°C to +85°C 24 Wide Plastic DIP MAX231CWE 0°C to +70°C 16 Wide SO MAX235EDG -40°C to +85°C 24 Ceramic SB 0°C to +70°C 14 CERDIP MAX235MDG -55°C to +125°C 24 Ceramic SB MAX231C/D 0°C to +70°C Dice* MAX236CNG 0°C to +70°C 24 Narrow Plastic DIP MAX231EPD -40°C to +85°C 14 Plastic DIP MAX236CWG 0°C to +70°C 24 Wide SO MAX231EWE -40°C to +85°C 16 Wide SO MAX236C/D 0°C to +70°C Dice* MAX231EJD -40°C to +85°C 14 CERDIP MAX236ENG -40°C to +85°C 24 Narrow Plastic DIP 14 CERDIP MAX236EWG -40°C to +85°C 24 Wide SO MAX231CJD MAX231MJD -55°C to +125°C MAX232CPE 0°C to +70°C 16 Plastic DIP MAX236ERG -40°C to +85°C 24 Narrow CERDIP MAX232CSE 0°C to +70°C 16 Narrow SO MAX236MRG -55°C to +125°C 24 Narrow CERDIP MAX232CWE 0°C to +70°C 16 Wide SO MAX237CNG 0°C to +70°C 24 Narrow Plastic DIP MAX232C/D 0°C to +70°C Dice* MAX237CWG 0°C to +70°C 24 Wide SO MAX232EPE -40°C to +85°C 16 Plastic DIP MAX237C/D 0°C to +70°C Dice* MAX232ESE -40°C to +85°C 16 Narrow SO MAX237ENG -40°C to +85°C 24 Narrow Plastic DIP MAX232EWE -40°C to +85°C 16 Wide SO MAX237EWG -40°C to +85°C 24 Wide SO MAX232EJE -40°C to +85°C 16 CERDIP MAX237ERG -40°C to +85°C 24 Narrow CERDIP MAX232MJE -55°C to +125°C 16 CERDIP MAX237MRG -55°C to +125°C 24 Narrow CERDIP MAX232MLP -55°C to +125°C 20 LCC MAX238CNG 0°C to +70°C 24 Narrow Plastic DIP MAX232ACPE 0°C to +70°C 16 Plastic DIP MAX238CWG 0°C to +70°C 24 Wide SO MAX232ACSE 0°C to +70°C 16 Narrow SO MAX238C/D 0°C to +70°C Dice* MAX232ACWE 0°C to +70°C 16 Wide SO MAX238ENG -40°C to +85°C 24 Narrow Plastic DIP * Contact factory for dice specifications. ______________________________________________________________________________________ 35 MAX220–MAX249 ___________________________________________Ordering Information (continued) MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ___________________________________________Ordering Information (continued) MAX238EWG PART -40°C to +85°C TEMP RANGE 24 Wide SO PIN-PACKAGE PART MAX243CPE TEMP RANGE 0°C to +70°C PIN-PACKAGE 16 Plastic DIP MAX238ERG -40°C to +85°C 24 Narrow CERDIP MAX243CSE 0°C to +70°C 16 Narrow SO MAX238MRG -55°C to +125°C 24 Narrow CERDIP MAX243CWE 0°C to +70°C 16 Wide SO MAX239CNG 0°C to +70°C 24 Narrow Plastic DIP MAX243C/D 0°C to +70°C Dice* MAX239CWG 0°C to +70°C 24 Wide SO MAX243EPE -40°C to +85°C 16 Plastic DIP MAX239C/D 0°C to +70°C Dice* MAX243ESE -40°C to +85°C 16 Narrow SO MAX239ENG -40°C to +85°C 24 Narrow Plastic DIP MAX243EWE -40°C to +85°C 16 Wide SO MAX239EWG -40°C to +85°C 24 Wide SO MAX243EJE -40°C to +85°C 16 CERDIP MAX239ERG -40°C to +85°C 24 Narrow CERDIP MAX243MJE -55°C to +125°C 16 CERDIP MAX239MRG -55°C to +125°C 24 Narrow CERDIP MAX244CQH 0°C to +70°C 44 PLCC MAX240CMH 0°C to +70°C 44 Plastic FP MAX244C/D 0°C to +70°C Dice* MAX240C/D 0°C to +70°C Dice* MAX244EQH -40°C to +85°C MAX241CAI 0°C to +70°C 28 SSOP MAX245CPL 0°C to +70°C 40 Plastic DIP 0°C to +70°C 28 Wide SO MAX245C/D 0°C to +70°C Dice* MAX241C/D 0°C to +70°C Dice* MAX245EPL -40°C to +85°C 40 Plastic DIP MAX241EAI -40°C to +85°C 28 SSOP MAX246CPL 0°C to +70°C 40 Plastic DIP MAX241EWI -40°C to +85°C 28 Wide SO MAX246C/D 0°C to +70°C Dice* 20 SSOP MAX246EPL -40°C to +85°C 40 Plastic DIP 0°C to +70°C 40 Plastic DIP Dice* MAX241CWI MAX242CAP 0°C to +70°C 44 PLCC MAX242CPN 0°C to +70°C 18 Plastic DIP MAX247CPL MAX242CWN 0°C to +70°C 18 Wide SO MAX247C/D 0°C to +70°C MAX242C/D 0°C to +70°C Dice* MAX247EPL -40°C to +85°C MAX242EPN -40°C to +85°C 18 Plastic DIP MAX248CQH 0°C to +70°C 44 PLCC MAX242EWN -40°C to +85°C 18 Wide SO MAX248C/D 0°C to +70°C Dice* 40 Plastic DIP MAX242EJN -40°C to +85°C 18 CERDIP MAX248EQH -40°C to +85°C 44 PLCC MAX242MJN -55°C to +125°C 18 CERDIP MAX249CQH 0°C to +70°C 44 PLCC MAX249EQH -40°C to +85°C 44 PLCC * Contact factory for dice specifications. Package Information For the latest package outline information, go to www.maxim-ic.com/packages. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 36 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components.