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Part Number: MAX4631
Description: The MAX4631/MAX4632/MAX4633 high-voltage, dual analog switches are pin compatible with the industry-st...
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MAX4631
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General Description
MAX4631 General Description
The MAX4631/MAX4632/MAX4633 high-voltage, dual analog switches are pin compatible with the industry-standard 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 appropriate polarity supply voltage to the load. This ensures unambiguous rail-to-rail outputs when a fault begins and ends.
On-resistance is 85½ (max) at +25°C and is matched between switches to 6½ (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.
MAX4631 Maximum Ratings
(Voltages referenced to GND)
V+..................................................................................................-0.3V to +44V
V- ..................................................................................................-44V to +0.3V
V+ to V-..........................................................................................-0.3V to +44V
COM_, IN_ (Note 1) ......................................................(V- - 0.3V) to (V+ + 0.3V)
NC_, NO_ (Note 2)
MAX4631_ _E .................................................................(V+ - 36V) to (V- + 36V)
MAX4632_ _E .................................................................(V+ - 25V) to (V- + 25V)
MAX4633_ _E .................................................................(V+ - 36V) to (V- + 36V)
NC_, NO_ to COM_
MAX4631_ _E ..................................................................................-36V to +36V
MAX4632_ _E ..................................................................................-25V to +25V
MAX4633_ _E ..................................................................................-36V to +36V
Continuous Current into Any Terminal.......................................................±30mA
Peak Current into Any Terminal (pulsed at 1ms,
10% duty cycle)........................................................................................±50mA
Continuous Power Dissipation (TA = +70°C) (Note 2)
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)...........................................842mW
Operating Temperature Ranges
MAX463_C_E .................................................................................0°C to +70°C
MAX463_E_E ..............................................................................-40°C to +85°C
MAX463_M_E ............................................................................-55°C to +125°C
Storage Temperature Range ....................................................-65°C to +150°C
Lead Temperature (soldering, 10sec) .......................................................+300°C
Note 1: COM_ and IN_ pins are not fault protected. Signals on COM_ to IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum current rating.
Note 2: NC_ and NO_ pins are fault protected (see Electrical Characteristics). With power applied to V+ or V-, signals on NC_ or NO_ exceeding ±25V (MAX4632) or ±36V (MAX4631/MAX4633) may damage the device. With V+ = V- = 0, signals on NC_ or NO_ exceeding ±40V may damage the device.
MAX4631 Features
Fault Protection ±40V with Power Off ±36V with ±15V Supplies (MAX4631/MAX4633) ±25V with ±15V Supplies (MAX4632)
Rail-to-Rail Signal Handling
No Power-Supply Sequencing Required
All Switches Off with Power Off
Output Clamped to Appropriate Supply Voltage During Fault Condition; No Transition Glitch
85½ (max) Signal Paths with ±15V Supplies
±4.5V to ±18V Dual Supplies +9V to +36V Single Supply
Low Power Consumption: <6mW
Pin Compatible with Industry-Standard DG401/DG403/DG405
TTL- and CMOS-Logic Compatible Inputs with Single +9V to +15V, or ±15V Supplies
MAX4631 Typical Application
ATE Equipment Data Acquisition Industrial and Process Control Systems Avionics Redundant/Backup Systems
MAX4631
PDF/DataSheet Download
- Datasheet: MAX4631
- File Size: 212466 KB
- Manufacturer: Maixm
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