MAX4631CSE+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4631CSE+ is a dual analog switch featuring fault-protected inputs and rail-to-rail signal handling. It contains two normally open single-pole/single-throw (SPST) switches in a 16-pin narrow SOIC package. The device operates with dual supplies from ±4.5V to ±18V or a single supply between +9V and +36V. On-resistance is 85Ω maximum at +25°C, with channel matching of 6Ω maximum. Off-leakage current is 0.5nA at +25°C. Turn-on time is 150ns maximum, and turn-off time is 100ns maximum. Charge injection is 5pC typical. Operating temperature range is 0°C to +70°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Fault protection on NO_ and NC_ terminals up to ±36V during power-on and ±40V during power-off
• Rail-to-rail signal handling capability without requiring power-supply sequencing
• TTL- and CMOS-compatible logic inputs for direct interfacing
• Pin-compatible replacement for industry-standard DG401/DG403/DG405 devices

Analog Switches, Multiplexers, Demultiplexers Applications

• Automated Test Equipment (ATE)
• Data Acquisition Systems
• Industrial and Process Control Systems
• Avionics Applications
• Redundant/Backup Systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix CSE+ corresponds to the commercial temperature range and lead-free packaging requirements. Confirm the 16-SOIC package dimensions match the design footprint. Ensure the ordering information aligns with the manufacturer's current production status and availability constraints.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when high-voltage fault protection is required on analog signal paths. The dual SPST configuration suits applications needing independent channel control. Verify that the 85Ω on-resistance meets system impedance requirements. Consider the ±15V supply operation for optimal performance characteristics.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4631/MAX4632/MAX4633 family of fault-protected, high-voltage dual analog switches. The MAX4631 variant specifically provides two SPST switches, distinguishing it from the SPDT MAX4632 and DPST MAX4633 models within the same pin-compatible series.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct pin-compatible replacements include the DG401, DG403, and DG405. Note that these legacy devices lack the integrated fault-protection circuitry found in the MAX4631 series. Verify that the absence of overvoltage protection in the substitute does not compromise system reliability.