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19-0271; Rev 2; 8/02
High-Performance, CMOS Analog Multiplexers
Precision, 8-Channel/Dual 4-Channel,
_______________General Description
____________________________Features
The MAX308/MAX309 precision, monolithic, CMOS ana-oGuaranteed On-Resistance Match
Betweenlog multiplexers (muxes) offer low on-resistance (lessChannels,
than 100?), which is matched to within 5?betweenchannels and remains flat over the
specified analog sig-oLow On-Resistance,
nal range (7?max). They also offer low leakage overoGuaranteed Flat On-Resistance
over Specifiedtemperature (NO-off leakage current less than 5nA atSignal Range, 7?Max
85°C) and fast switching speeds (transition time lessoGuarateed Low Charge
Injection, 2000V
improved
44V
silicon-gate
process.
Design
improve-oPlug-In
Upgrade
for
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Industry-Standardments
yield
extremely
low
charge
injection
(less
thanDG408/DG409/DG508A/DG509A
10pC)
and
electrostahttp://doc.guandang.net/bced53c530da80f26e0004bf8.htmltic
guarantee
discharge
protectiongreater than 2000V.
oSingle-Supply Operation ( 5V to
muxes operate with a single
30V)Bipolar-Supply Operation (±5V to ±20V)These
5V to
30V supplyoLow Power Consumption,
improved parts are plug-in upgrades for the industry-______________Ordering
Information
standard DG408, DG409, DG508A, and DG509A.
________________________Applications
Sample-and-Hold CircuitsAutomatic Test EquipmentHeads-Up Displays
Guidance and Control SystemsMilitary Radios
Communications SystemsBattery-Operated SystemsPBX, PABX
Ordering Information continued at end of data sheet.Audio Signal Routing
***Contact factory for dice specifications.Contact factory for availability.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
________________________________________________________________Maxim Integrated
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Products1://doc.guandang.net/bced53c530da80f26e0004bf8.htmlr
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.
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog MultiplexersMAX308/MAX309
ABSOLUTE MAXIMUM RATINGS
Voltage
Referenced
to
V-V ............................................................................
-0.3V,
44VGND.........................................................................0.3V, 25VDigital Inputs, NO, COM (Note 1)...........(V- - 2V) to (V
2V) or
30mA, (whichever occurs first)
Continuous Current (any terminal)......................................30mAPeak
Current, NO or COM
(pulsed at 1ms, 10% duty cycle max)..........................100mA
Continuous Power Dissipation (TA=
Plastic
DIP
70°C)
(derate
10.53mW/°C
above
70°C)..........842mWNarrowhttp://doc.guandang.net/bced53c530da80f26e0004bf8.htm
l SO (derate 8.70mW/°C above
70°C)............696mWCERDIP (derate 10.00mW/°C
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above
70°C)...............800mWTSSOP
(derate
6.7mW/°C
above
70°C)....................457mWOperating Temperature Ranges
MAX30_C_
70°CMAX30_E_
_.......................................................0°C
to
_.....................................................-40°C
85°CMAX30_MJE..................................................-55°C
125°CStorage Temperature Range.............................-65°C to
to
to
150°CLead
Temperature (soldering, 10sec)............................. 300°C
Note 1:
Signals on NO, COM, EN, A0, A1, or A2 exceeding V
or V- are clamped by internal diodes.
Limit forward current to maximum current ratings.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent
damage to the device. These are stress ratings only, and functionaloperation of the
device
at
these
or
any
cohttp://doc.guandang.net/bced53c530da80f26e0004bf8.htmlnditions
other
beyond
those
indicated in the operational sections of the specifications is not implied. Exposure
toabsolute maximum rating conditions for extended periods may affect device
reliability.
ELECTRICAL CHARACTERISTICS—Dual Supplies
(V
=
15V, V- = -15V, GND = 0V, VAH=
2.4V, VAL=
0.8V, TA= TMINto TMAX, unless
otherwise noted.)
2_______________________________________________________________________________
________
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Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V
=
15V, V- = -15V, GND = 0V, VAH=
2.4V, VAL=
0.8V, TA= TMINto TMAX, unless
otherwise noted.)
MAX308/MAX309
________________________________________________________________________________
_______3
Precision, 8-Channel/Dual 4-Channel,
High-Performance,
CMOS
Analog
MultiplexersMAX308/Mhttp://doc.guandang.net/bced53c530da80f26e0004bf8.htmlAX309
ELECTRICAL CHARACTERISTICS—Single Supply
(V
=
12V, V- = 0V, GND = 0V, VAH=
2.4V, VAL=
0.8V, TA= TMINto TMAX, unless
otherwise noted.)
Note 2:The algebraic convention where the most negative value is a minimum and the
most positive value a maximum is used in
this data sheet.
Note 3:Guaranteed by design.
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Note 4:?RON= RON(MAX)- RON(MIN).On-resistance match between channels and flatness
are guaranteed only with specified
voltages. Flatness is defined as the difference between the maximum and minimum value
of on-resistance as measured atthe extremes of the specified analog signal range.
Note 5:Leakage parameters are 100% tested at the maximum rated hot temperature and
guaranteed by correlation at
25°C.Note 6:Off isolation = 20log VCOM/VNO, where
VCOM= output and VNO= input to off switch.
4___________________________________________________________http://doc.guandang.
net/bced53c530da80f26e0004bf8.html____________________________
High-Performance, CMOS Analog Multiplexers
Precision, 8-Channel/Dual 4-Channel,
__________________________________________Typical Operating Characteristics
(TA =
25°C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM
ON-RESISTANCE vs. VCOM AND
ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
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TEMPERATURE (DUAL SUPPLIES)
(SINGLE SUPPLY)
1601202
400
0-COT 9/140
80360
1003XAM32012080280100
)
)
)
???(((240
40
-20
-15-10
-5
NNNO80O60ORRR20060401604020120208000
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5
10
1520
-15-10-5051015
5
1015
20
VCOM (V)
VCOM (V)
VCOM (V)
ON-RESISTANCE vs. VCOM ANDTEMPERATURE (SINGLE SUPPLY)
OFF LEAKAGE vhttp://doc.guandang.net/bced53c530da80f26e0004bf8.htmls. TEMPERATURE
ON LEAKAGE vs. TEMPERATURE
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1601000
1000140100100120)
)
A10A10100
nn((
)
EE?GG1(A1
A NKKO80AARE60
ELL0.1 0.1 FFNOO400.010.01
200.0010.00100
0.0001
0.0001
5
1015-55-35-15
5
2545
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65
85105125
-55-35-15
5
25456585105125
VCOM (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
CHARGE INJECTION vs. VCOM
SUPPLY CURRENT vs. TEMPERATURE
30100
2010
10)
A)
C?1
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(p -(I
j0Q, I-100.1
-200.01
-300.001
-15
-10
-5
05
10
15
-55-35-15
5
2545
65
85105125
VCOM (V)
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TEMPERATURE (°C)
________________________________________________http://doc.guandang.net/bced53c5
30da80f26e0004bf8.html_______________________________________5
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog MultiplexersMAX308/MAX309
______________________________________________________________Pin Description
PIN
MAX3081, 15, 16—234–7—8—9–12—1314
MAX309—1, 1623—4–7—8, 9—10–131415
NAMEA0, A2, A1A0, A1ENV-NO1–NO4NO1A–NO4A
COMCOMA, COMBNO8–NO5NO4B–NO1B
V GND
Address InputsAddress InputsEnable Input
Negative
Supply
Voltage
InputAnalog
Inputs—BidirectionalAnalog
Inputs—BidirectionalAnalog
Output—BidirectionalAnalog
Outputs—BidirectionalAnalog
Inputs—BidirectionalAnalog
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Inputs—BidirectionalPositive Supply Voltage InputGround
FUNCTION
__________Applications Information
Operation with
Supply Voltages Other than 15V
Using
supply
voltages
less
than
±15V
will
reduce
http://doc.guandang.net/bced53c530da80f26e0004bf8.htmlsignal
theanalog
range.
The
MAX308/MAX309 switchesoperate with ±5V to ±20V bipolar supplies or with a 5V to
30V single supply. Connect V- to GND whenoperating with a single supply. Both device
types canalso operate with unbalanced supplies, such as
24Vand -5V. The Typical
Operating Characteristicsgraphsshow typical on-resistance with 20V, 15V, 10V, and
5Vsupplies. (Switching times increase by a factor of twoor more for operation at 5V.)
Overvoltage Protection
Proper power-supply sequencing is recommended forall CMOS devices. Do not exceed the
absolute maxi-mum ratings, because stresses beyond the listed rat-ings may cause
permanent damage to the devices.Always sequence V
on first, then V-, followed by
thelogic inputs, NO, or COM. If power-supply sequencingis not possible, add two small
signal diodes in serieswith supply pins for overvoltage protection (Figure 1).Adding
diodes
reduces
the
analog
signal
range
to
1Vbelow
V
http://doc.guandang.net/bced53c530da80f26e0004bf8.htmland 1V above V-, but does not
affect thedevices’ low switch resistance and low leakage charac-teristics. Device
operation is unchanged, and the differ-ence between V
and V- should not exceed
44V.
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6
Figure 1.
Overvoltage Protection Using External BlockingDiodes
________________________________________________________________________________
_______
High-Performance, CMOS Analog Multiplexers
Precision, 8-Channel/Dual 4-Channel,
______________________________________________Test Circuits/Timing Diagrams
Figure 2.
Transition Time
________________________________________________________________________________
_______
7
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog MultiplexersMAX308/MAX309
_________________________________Test Circuits/Timing Diagrams (continued)
Figure 5. Chahttp://doc.guandang.net/bced53c530da80f26e0004bf8.htmlrge Injection
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8_______________________________________________________________________________
________
High-Performance, CMOS Analog Multiplexers
Precision, 8-Channel/Dual 4-Channel,
_________________________________Test Circuits/Timing Diagrams (continued)
Figure 6.
Off IsolationFigure 7.
Figure 8.
NO/COM Capacitance
Crosstalk
________________________________________________________________________________
_______9
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog MultiplexersMAX308/MAX309
________Pin Configurations/Functional Diagrams/Truth Tables (continued)
10______________________________________________________________________________
________
High-Performance, CMOS Analog Multiplexers
Precision, 8-Channel/Dual 4-Channel,
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_Ordering Information (continued)
://doc.guandang.net/bced53c530da80f26e0004bf8.htmlPackage Information
For the latest package outline information, go towww.maxim-ic.com/packages.
*Contact factory for dice specifications.**Contact factory for availability.
________________________________________________________________________________
______11
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog MultiplexersMAX308/MAX309
__________________________________________________________Chip Topographies
MAX308
MAX309
N.C. = NO INTERNAL CONNECTION
TRANSISTOR COUNT:
122SUBSTRATE CONNECTED TO V
TRANSISTOR COUNT:
122SUBSTRATE CONNECTED TO V
Maxim cannot assume responsibility for use of any circuitry other than circuitry
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entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim
reserves the right to change the circuitry and specifications without notice
ahttp://doc.guandang.net/bced53c530da80f26e0004bf8.htmlt any time.
12__________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA
94086 (408) 737-7600?2002 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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