MAX4535CUD

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4535CUD is a dual 2-to-1 fault-protected multiplexer manufactured by Analog Devices Inc./Maxim Integrated. It operates with ±4.5V to ±20V dual supplies or +9V to +36V single supply. The device features fault-protected inputs, rail-to-rail signal handling, and overvoltage clamping at 150mV beyond the rails. It provides ±40V overvoltage protection with supplies off and ±25V protection with supplies on. On-resistance is 400 Ω max and is matched between channels to 10 Ω max. All digital inputs have TTL logic thresholds, ensuring TTL/CMOS-logic compatibility when using a single +12V or dual ±15V supplies.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Fault-protected analog inputs handle signals exceeding supply rails without damage
• Rail-to-rail signal-handling capability allows full voltage range operation
• TTL/CMOS-compatible logic inputs ensure broad digital interface compatibility
• No power-supply sequencing required for safe operation

Analog Switches, Multiplexers, Demultiplexers Applications

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

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific package type and temperature grade against project requirements before ordering. Confirm that the NO_ pins are utilized for fault-protected signals while COM_, EN, and A_ pins remain within supply limits. Ensure proper decoupling capacitors are placed near V+ and V- pins to maintain stability during transient fault conditions.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when high-voltage fault protection is necessary for analog signal routing. Verify that the maximum supply voltage does not exceed 36V in single-supply mode or 40V differential in dual-supply mode. Consider the 400 Ω on-resistance and leakage characteristics for precision applications requiring low distortion.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4534/MAX4535 family of fault-protected, high-voltage multiplexers. The MAX4535 variant specifically offers two independent 2-to-1 switching channels in a 14-pin TSSOP package. It shares core architecture with the single-channel MAX4534 but provides dual-channel functionality for more complex signal routing tasks.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

MAX4535EUD (Extended Temperature Range)

Analog Switches, Multiplexers, Demultiplexers FAQ

Are all pins fault-protected?

No, only the NO_ pins are fault-protected. The GND, COM_, EN, and A_ pins are not fault-protected and must be limited to the supply voltages to prevent damage.

What is the fault response time?

The typical fault response time is 20 ns. When a fault occurs, the output follows the input to the supply rail with minimal delay.

How does the device handle power-off states?

When power is removed, the NO_ terminals become a virtual open circuit. The fault protection remains effective up to ±40V from ground, allowing safe connection of high-voltage signals even when the device is unpowered.