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MAX308CPEMAXIMN/a61avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX308CPEMAXIM ?N/a150avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX308CSEMAXIMN/a918avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX308EPEMAXN/a107avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX308ESEMAXN/a20avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX308ESEMAXIMN/a46avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX309CSEN/a16avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX309CPEMAXIMN/a12avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX309CPEMAXIM ?N/a20avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX309CPEMAXN/a58avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX309CSEMAXIMN/a3000avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX309CSEMAXN/a143avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX309EPEMAXIMN/a3avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
MAX309ESEMAXIMN/a756avaiPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers


MAX309CSE ,Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog MultiplexersFeatures' Guaranteed On-Resistance Match BetweenThe MAX308/MAX309 precision, monolithic, CMOS ana-C ..
MAX309CSE ,Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog MultiplexersApplicationsMAX308CSE 0°C to +70°C 16 Narrow SOSample-and-Hold CircuitsMAX308C/D 0°C to +70°C Dice* ..
MAX309CSE ,Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog MultiplexersMAX308/MAX30919-0271; Rev 0; 7/94Precision, 8-Channel/Dual 4-Channel,High-Performance, CMOS Analog ..
MAX309CSE+ ,Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog MultiplexersELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +15V, V- = -15V, GND = 0V, V = +2.4V, V = +0.8V, T = ..
MAX309CUE+ ,Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog MultiplexersApplicationsMAX308CSE 0°C to +70°C 16 Narrow SOSample-and-Hold CircuitsMAX308C/D 0°C to +70°C Dice* ..
MAX309EPE ,Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog MultiplexersELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +15V, V- = -15V, GND = 0V, VAH = +2.4V, VAL = +0.8V, ..
MAX6357LSUT+T ,Dual/Triple-Voltage µP Supervisory CircuitsApplicationsThe MAX6354/MAX6357/MAX6360 offer an active-low, ● Computers ● Intelligent Instrumentsp ..
MAX6357LSUT-T ,Dual/Triple-Voltage レP Supervisory CircuitsMAX6351–MAX6360 19-1508; Rev 1; 10/99Dual/Triple-Voltage μP Supervisory Circuits
MAX6357TZUT ,Dual/Triple-Voltage µP Supervisory CircuitsFeatures● Precision Monitoring of Multiple +1.8V, +2.5V, +3.0V, The MAX6351–MAX6360 microprocessor ..
MAX6358SYUT ,Dual/Triple-Voltage µP Supervisory CircuitsMAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits
MAX6358SYUT+T ,Dual/Triple-Voltage µP Supervisory CircuitsElectrical Characteristics(V 1 = V 2 = +1.2V to +5.5V, T = -40°C to +85°C, unless otherwise noted. ..
MAX6359LSUT-T ,Dual/Triple-Voltage レP Supervisory CircuitsFeaturesThe MAX6351–MAX6360 microprocessor (μP) supervi-♦ Precision Monitoring of Multiple +2.5V, + ..


MAX308CPE-MAX308CSE-MAX308EPE-MAX308ESE-MAX309CPE-MAX309CSE-MAX309EPE-MAX309ESE
Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers
_______________General Description
The MAX308/MAX309 precision, monolithic, CMOS ana-
log multiplexers (muxes) offer low on-resistance (less
than 100Ω), which is matched to within 5Ωbetween
channels and remains flat over the specified analog sig-
nal range (7Ωmax). They also offer low leakage over
temperature (NO-off leakage current less than 5nA at
+85°C) and fast switching speeds (transition time less
than 250ns). The MAX308 is a single-ended 1-of-8
device, and the MAX309 is a differential 2-of-4 device.
The MAX308/MAX309 are fabricated with Maxim’s
improved 44V silicon-gate process. Design improve-
ments yield extremely low charge injection (less than
10pC) and guarantee electrostatic discharge protection
greater than 2000V.
These muxes operate with a single +4.5V to +30V sup-
ply or bipolar ±4.5V to ±20V supplies, while retaining
TTL/CMOS-logic input compatibility and fast switching.
CMOS inputs provide reduced input loading. These
improved parts are plug-in upgrades for the industry-
standard DG408, DG409, DG508A, and DG509A.
________________________Applications

Sample-and-Hold Circuits
Automatic Test Equipment
Heads-Up Displays
Guidance and Control Systems
Military Radios
Communications Systems
Battery-Operated Systems
PBX, PABX
Audio Signal Routing
____________________________Features
Guaranteed On-Resistance Match Between
Channels, <5ΩMax
Low On-Resistance, <100ΩMaxGuaranteed Flat On-Resistance over Specified
Signal Range, 7ΩMax
Guarateed Low Charge Injection, <10pCNO-Off Leakage Current <5nA at +85°CCOM-Off Leakage Current <20nA at +85°CESD Protection >2000VPlug-In Upgrade for Industry-Standard
DG408/DG409/DG508A/DG509A
Single-Supply Operation (+4.5V to +30V)
Bipolar-Supply Operation (±4.5V to ±20V)
Low Power Consumption, <300µWRail-to-Rail Signal HandlingTTL/CMOS-Logic Compatible
______________Ordering Information
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
________________________________________________________________Maxim Integrated Products1
_____________________Pin Configurations/Functional Diagrams/Truth Tables
Call toll free 1-800-998-8800 for free samples or literature.

19-0271; Rev 0; 7/94
Ordering Information continued at end of data sheet.

* Contact factory for dice specifications.
** Contact factory for availability.
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—Dual Supplies

(V+ = +15V, V- = -15V, GND = 0V, VAH= +2.4V, VAL= +0.8V, TA= TMINto TMAX, unless otherwise noted.)
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.
Voltage Referenced to V-............................................................................-0.3V, 44V
GND.........................................................................-0.3V, 25V
Digital Inputs, NO, COM (Note 1)...........(V- - 2V) to (V+ + 2V) or
30mA, (whichever occurs first)
Continuous Current (any terminal)......................................30mA
Peak Current, NO or COM
(pulsed at 1ms, 10% duty cycle max)..........................100mA
Continuous Power Dissipation (TA= +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C)..........842mW
Narrow SO (derate 8.70mW/°C above +70°C)............696mW
CERDIP (derate 10.00mW/°C above +70°C)...............800mW
Operating Temperature Ranges
MAX30_C_ _.......................................................0°C to +70°C
MAX30_E_ _.....................................................-40°C to +85°C
MAX30_MJE..................................................-55°C to +125°C
Storage Temperature Range.............................-65°C to +150°C
Lead 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.
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
_______________________________________________________________________________________3
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
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________
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.
Note 4:
ΔRON= 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 at
the 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.
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
_______________________________________________________________________________________5

ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
MAX308/9 TOC-01
VCOM (V)
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (DUAL SUPPLIES)
MAX308/9 TOC-02
VCOM (V)
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
MAX308/9 TOC-03
VCOM (V)
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (SINGLE SUPPLY)
MAX308/9 TOC-041050
VCOM (V)
CHARGE INJECTION vs. VCOM

MAX308/9 TOC-07
VCOM (V)
j (pC)
OFF LEAKAGE vs. TEMPERATURE
MAX308/9 TOC-05
TEMPERATURE (°C)
OFF LEAKAGE (nA)
ON LEAKAGE vs. TEMPERATURE
MAX308/9 TOC-05
TEMPERATURE (°C)
ON LEAKAGE (nA)
SUPPLY CURRENT vs. TEMPERATURE
MAX308/9 TOC-08
TEMPERATURE (°C)
I+, I- (
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
__________Applications Information
Operation with
Supply Voltages Other than 15V

Using supply voltages less than ±15V will reduce the
analog signal range. The MAX308/MAX309 switches
operate with ±4.5V to ±20V bipolar supplies or with a
+4.5V to +30V single supply. Connect V- to GND when
operating with a single supply. Both device types can
also operate with unbalanced supplies, such as +24V
and -5V. The Typical Operating Characteristicsgraphs
show typical on-resistance with 20V, 15V, 10V, and 5V
supplies. (Switching times increase by a factor of two
or more for operation at 5V.)
Overvoltage Protection

Proper power-supply sequencing is recommended for
all 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 the
logic inputs, NO, or COM. If power-supply sequencing
is not possible, add two small signal diodes in series
with supply pins for overvoltage protection (Figure 1).
Adding diodes reduces the analog signal range to 1V
below V+ and 1V above V-, but does not affect the
devices’ low switch resistance and low leakage charac-
teristics. Device operation is unchanged, and the differ-
ence between V+ and V- should not exceed +44V.
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________
______________________________________________________________Pin Description

Figure 1. Overvoltage Protection Using External Blocking
Diodes
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