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AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114C – JANUARY 1979 – REVISED MAY 1995 • • • • • • Meets or Exceeds the Requirements of ANSI EIA / TIA-422-B and ITU Recommendation V.11 Operates From a Single 5-V Supply TTL Compatible Complementary Outputs High Output Impedance in Power-Off Conditions Complementary Output Enable Inputs D OR N PACKAGE (TOP VIEW) 1A 1Y 1Z G 2Z 2Y 2A GND description The AM26LS31C is a quadruple complementaryoutput line driver designed to meet the requirements of ANSI EIA / TIA-422-B and ITU (formerly CCITT) V.11. The 3-state outputs have high-current capability for driving balanced lines such as twisted-pair or parallel-wire transmission lines, and they provide a high-impedance state in the power-off condition. The enable function is common to all four drivers and offers the choice of an active-high or active-low enable input. Low-power Schottky circuitry reduces power consumption without sacrificing speed. 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC 4A 4Y 4Z G 3Z 3Y 3A FUNCTION TABLE (each driver) ENABLES INPUT A H L H L X H = high level L = low level OUTPUTS G G Y Z H H X X L X X L L H H L H L Z L H L H Z X = irrelevant Z = high impedance (off) The AM26LS31C is characterized for operation from 0°C to 70°C. logic symbol† G G 4 12 logic diagram (positive logic) ≥1 G EN G 1A 1A 2A 3A 4A 1 7 9 15 2 3 6 5 10 11 14 13 4 12 1 1Y 1Z 2A 7 2Y 2Z 3A 9 2 3 6 5 10 11 3Y 3Z 4Y 4A 15 14 13 1Y 1Z 2Y 2Z 3Y 3Z 4Y 4Z 4Z † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Copyright 1995, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–1 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114C – JANUARY 1979 – REVISED MAY 1995 schematic (each driver) Input A V 22 kΩ 9Ω Output Y Common to All Four Drivers VCC V 22 kΩ 22 kΩ To Three Other Drivers Enable G Enable G GND All resistor values are nominal. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Output off-state voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°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 under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values, except differential output voltage VOD, are with respect to network GND. 2–2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114C – JANUARY 1979 – REVISED MAY 1995 DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING D N 950 mW 1150 mW 7.6 mW/°C 9.2 mW/°C 608 mW 736 mW recommended operating conditions Supply voltage, VCC High-level input voltage, VIH MIN NOM MAX UNIT 4.75 5 5.25 V 2 V Low-level input voltage, VIL High-level output current, IOH Low-level output current, IOL Operating free-air temperature, TA 0 0.8 V – 20 mA 20 mA 70 °C electrical characteristics over operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH Input clamp voltage VOL TEST CONDITIONS High-level output voltage VCC = 4.75 V, VCC = 4.75 V, II = – 18 mA IOH = – 20 mA Low-level output voltage VCC = 4.75 V, IOL = 20 mA VO = 0.5 V IOZ Off-state (high-impedance-state) output current VCC = 4 4.75 75 V II IIH Input current at maximum input voltage High-level input current VCC = 5.25 V, VCC = 5.25 V, IIL Low-level input current VCC = 5.25 V, IOS Short-circuit output current‡ VCC = 5.25 V MIN TYP† MAX UNIT – 1.5 V 2.5 V 0.5 – 20 VO = 2.5 V VI = 7 V 20 VI = 2.7 V VI = 0.4 V – 30 ICC Supply current VCC = 5.25 V, All outputs disabled 32 † All typical values are at VCC = 5 V and TA = 25°C. ‡ Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second. V µA 0.1 mA 20 µA – 0.36 mA – 150 mA 80 mA switching characteristics, VCC = 5 V, TA = 25°C PARAMETER tPLH tPHL TEST CONDITIONS Propagation delay time, low-to-high-level output Propagation delay time, high-to-low-level output MIN TYP MAX 14 20 UNIT ns 14 20 ns CL = 30 pF pF, See Figure 1 S1 and S2 open, open 1 6 ns RL = 75 Ω, 25 40 ns Output-to-output skew tPZH Output enable time to high level CL = 30 pF, See Figure 1 tPZL Output enable time to low level CL = 30 pF, See Figure 1 RL = 180 Ω, 37 45 ns tPHZ tPLZ Output disable time from high level CL = 10 p pF,, See Figure 1 S1 and S2 closed,, 21 30 ns 23 35 ns Output disable time from low level POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–3 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114C – JANUARY 1979 – REVISED MAY 1995 PARAMETER MEASUREMENT INFORMATION Test Point 3V VCC 180 Ω Input A (see Notes B and C) S1 1.3 V 1.3 V 0V tPHL tPLH VOH Output Y From Output Under Test 1.5 V Skew 75 Ω CL (see Note A) Skew tPLH tPHL S2 VOH 1.5 V Output Z TEST CIRCUIT Enable G (see Note D) VOL PROPAGATION DELAY TIMES AND SKEW 3V 1.5 V 1.5 V See Note D 0V Enable G tPLZ tPZL ≈ 4.5 V Waveform 1 (see Note E) VOL S1 Closed S2 Open S1 Closed S2 Closed ≈ 1.5 V VOL 1.5 V 0.5 V tPHZ tPZH Waveform 2 (see Note E) S1 Open S2 Closed 0.5 V VOH ≈ 1.5 V 1.5 V ≈0 V S1 Closed S2 Closed ENABLE AND DISABLE TIME WAVEFORMS NOTES: A. B. C. D. E. CL includes probe and jig capacitance. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50 Ω, tr ≤ 15 ns, and tf ≤ 6 ns. When measuring propagation delay times and skew, switches S1 and S2 are open. Each enable is tested separately. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. Figure 1. Test Circuit and Voltage Waveforms 2–4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114C – JANUARY 1979 – REVISED MAY 1995 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ Load = 470 Ω to GND See Note A TA = 25°C VO – Y Output Voltage – V 3 ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ 4 VCC = 5 V Load = 470 Ω to GND See Note A VCC = 5.25 V VCC = 5 V VO – Y Output Voltage – V 4 OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE VCC = 4.75 V 2 1 0 3 TA = 0°C TA = 25°C 2 1 0 0 1 2 VI – Enable G Input Voltage – V 3 0 1 2 VI – Enable G Input Voltage – V Figure 2 ÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ VCC = 5 V VCC = 4.75 V 4 3 2 ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ 6 VCC = 5 V Load = 470 Ω to VCC See Note B 5 VO – Output Voltage – V VO – Output Voltage – V 5 OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE Load = 470 Ω to VCC See Note B TA = 25°C VCC = 5.25 V 3 Figure 3 OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 6 TA = 70°C 4 ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ TA = 70°C 3 TA = 25°C 2 ÎÎÎÎ TA = 0°C 1 1 0 0 1 2 VI – Enable G Input Voltage – V 3 0 0 Figure 4 1 2 VI – Enable G Input Voltage – V 3 Figure 5 NOTES: A. The A input is connected to V CC during the testing of the Y outputs and to ground during testing of the Z outputs. B. The A input is connected to ground during the testing of the Y outputs and to VCC during the testing of the Z outputs. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–5 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114C – JANUARY 1979 – REVISED MAY 1995 TYPICAL CHARACTERISTICS HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE ÁÁ ÁÁ ÁÁ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ VCC = 5 V See Note A 4 VCC = 5.25 V IOH = – 20 mA 3 IOH = – 40 mA 2 ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 4 VOH V OH – High-Level Output Voltage – V V VOH OH – High-Level Output Voltage – V 5 HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT VCC = 5 V 3 VCC = 4.75 V 2 ÁÁÎÎÎÎÎ ÁÁ ÁÁÎÎÎÎÎ 1 0 1 TA = 25°C See Note A 0 0 10 20 30 40 50 60 70 80 0 TA – Free-Air Temperature – °C – 20 – 40 – 60 – 80 IOH – High-Level Output Current – mA Figure 6 Figure 7 LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE ÁÁ ÁÁ ÁÁ 0.4 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÁÁÁ ÁÁÁ ÁÁÁ 1 VCC = 5 V IOL = 40 mA See Note B TA = 25°C See Note B 0.9 V VOL OL – Low-Level Output Voltage – V V VOL OL – Low-Level Output Voltage – V 0.5 0.3 0.2 0.1 0.8 0.7 0.6 VCC = 4.75 V 0.5 0.4 VCC = 5.25 V 0.3 0.2 0.1 0 0 0 50 25 TA – Free-Air Temperature – °C 75 0 20 40 60 80 100 IOL – Low-Level Output Current – mA Figure 8 Figure 9 NOTES: A. The A input is connected to VCC during the testing of the Y outputs and to ground during testing of the Z outputs. B. The A input is connected to ground during the testing of the Y outputs and to VCC during the testing of the Z inputs. 2–6 – 100 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 120 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114C – JANUARY 1979 – REVISED MAY 1995 TYPICAL CHARACTERISTICS Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE ÎÎÎÎ ÎÎÎÎ No Load TA = 25°C VO – Y Output Voltage – V 4 5 ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 4 VCC = 5.25 V VCC = 5 V VCC = 4.75 V 3 ÎÎÎÎ ÎÎÎÎ No Load 2 1 VO – Y Output Voltage – V 5 Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE 3 ÎÎÎÎ ÎÎÎÎ TA = 25 °C 2 ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ TA = 70°C TA = 0°C 1 0 0 0 1 2 VI – Data Input Voltage – V 3 0 Figure 10 1 2 VI – Data Input Voltage – V 3 Figure 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–7 2–8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. TI warrants performance of its semiconductor products and related software to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Certain applications using semiconductor products may involve potential risks of death, personal injury, or severe property or environmental damage (“Critical Applications”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. Inclusion of TI products in such applications is understood to be fully at the risk of the customer. Use of TI products in such applications requires the written approval of an appropriate TI officer. Questions concerning potential risk applications should be directed to TI through a local SC sales office. In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards should be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. Nor does TI warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. Copyright 1995, Texas Instruments Incorporated