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MAX4633MJA Interface IC
Prototype PCB
Part No.:   MAX4633MJA
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Description:   Interface IC
File Size :   208 K    
Page : 16 Pages
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100%
19-1515; Rev 0; 7/99
Fault-Protected, High-Voltage,
Dual Analog Switches
General Description
The MAX4631/MAX4632/MAX4633 high-voltage, dual
analog switches are pin compatible with the industry-stan-
dard DG401/DG403/DG405. They upgrade the existing
devices with fault-protected inputs and Rail-to-Rail
®
signal
handling capabilities. The MAX4631/MAX4632/MAX4633’s
normally open (NO) and normally closed (NC) terminals
are protected from overvoltage faults up to 36V during
power-up or power-down. During a fault condition, these
terminals become open circuit and only nanoamperes of
leakage current flow from the source, yet the switch output
(COM_) continues to furnish up to 18mA of the appropri-
ate polarity supply voltage to the load. This ensures unam-
biguous rail-to-rail outputs when a fault begins and ends.
On-resistance is 85Ω (max) at +25°C and is matched
between switches to 6Ω (max). Off-leakage current is only
0.5nA at +25°C and 5nA at +85°C.
The MAX4631 has two NO single-pole/single-throw (SPST)
switches. The MAX4632 has two NO/NC single-pole/
double-throw (SPDT) switches. The MAX4633 has two NO
double-pole/single-throw (DPST) switches.
These CMOS switches operate with dual power supplies
ranging from ±4.5V to ±18V or a single supply between
+9V and +36V. All digital inputs have +0.8V and +2.4V
logic thresholds, ensuring both TTL- and CMOS-logic
compatibility when using ±15V or a single +12V supply.
Features
o
Fault Protection
±40V with Power Off
±36V with ±15V Supplies (MAX4631/MAX4633)
±25V with ±15V Supplies (MAX4632)
o
Rail-to-Rail Signal Handling
o
No Power-Supply Sequencing Required
o
All Switches Off with Power Off
o
Output Clamped to Appropriate Supply Voltage
During Fault Condition; No Transition Glitch
o
85Ω (max) Signal Paths with ±15V Supplies
o
±4.5V to ±18V Dual Supplies
+9V to +36V Single Supply
o
Low Power Consumption: <6mW
o
Pin Compatible with Industry-Standard
DG401/DG403/DG405
o
TTL- and CMOS-Logic Compatible Inputs with
Single +9V to +15V, or ±15V Supplies
MAX4631/MAX4632/MAX4633
Ordering Information
PART
MAX4631CSE
MAX4631CPE
MAX4631ESE
MAX4631EPE
MAX4631MJE
MAX4632CSE
MAX4632CPE
MAX4632ESE
MAX4632EPE
MAX4632MJE
MAX4633CSE
MAX4633CPE
MAX4633ESE
MAX4633EPE
MAX4633MJE
TEMP. RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
16 Narrow SO
16 Plastic DIP
16 Narrow SO
16 Plastic DIP
16 CERDIP
16 Narrow SO
16 Plastic DIP
16 Narrow SO
16 Plastic DIP
16 CERDIP
16 Narrow SO
16 Plastic DIP
16 Narrow SO
16 Plastic DIP
16 CERDIP
Applications
ATE Equipment
Data Acquisition
Industrial and Process Control Systems
Avionics
Redundant/Backup Systems
Pin Configurations appear at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________
Maxim Integrated Products
1
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