General Description
The MAX4534 (single 4-to-1) and MAX4535 (dual 2-to- 1) fault-protected multiplexers operate with ±4.5V to ±20V dual supplies or a +9V to +36V single supply. These multiplexers feature fault-protected inputs, railto-rail signal-handling capability, and overvoltage clamping at 150mV beyond the rails. Both parts feature ±40V overvoltage protection with supplies off and ±25V protection with supplies on. On-resistance is 400Ω max and is matched between channels to 10Ω max. All digital inputs have TTL logic thresholds, ensuring TTL/CMOS-logic compatibility when using a single +12V or dual ±15V supplies.

Features
♦ ±40V Fault Protection with Power Off ±25V Fault Protection with ±15V Supplies
♦ No Power-Supply Sequencing Required
♦ All Channels Off with Power Off
♦ Rail-to-Rail Signal Handling
♦ Output Clamped to Appropriate Supply Voltage During Fault Condition
♦ 1.0kΩ typ Output Clamp Resistance During Overvoltage
♦ 400Ω max On-Resistance
♦ 20ns typ Fault Response Time
♦ ±4.5V to ±20V Dual Supplies +9V to +36V Single Supply
♦ TTL/CMOS-Compatible Logic Inputs

Applications
    Data-Acquisition Systems
    Industrial and Process Control
    Avionics
    Signal Routing
    Redundant/Backup Systems