MAX4509ESE

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4509ESE is a high-voltage, fault-protected multiplexer switch IC manufactured by Analog Devices Inc./Maxim Integrated. It features a dual 4-to-1 configuration housed in a 16-pin SOIC package. The device operates with single supplies from +9V to +36V or dual supplies of ±4.5V to ±20V. Key electrical parameters include a maximum on-resistance of 400 Ohms, a typical turn-on time of 400 ns, and a turn-off time of 250 ns. It supports rail-to-rail signal handling and provides ±40V fault protection with power off. The component functions within an operating temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Fault-protected inputs capable of withstanding voltages up to ±40V beyond the supply rails without damage.
• Rail-to-Rail signal handling capability allows for full dynamic range operation across the supply voltage limits.
• TTL/CMOS-compatible logic inputs simplify interface design with standard digital control circuits.

Analog Switches, Multiplexers, Demultiplexers Applications

• Data-acquisition systems requiring high-voltage channel selection
• Industrial and process control signal routing
• Avionics applications needing robust fault protection

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix ESE against the manufacturer's current datasheet to confirm package type and commercial grade specifications. Check for end-of-life status or discontinuation notices from Analog Devices, as older Maxim parts may have limited availability. Ensure the ordering information matches the required lead times and packaging formats available through authorized distributors.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when designing circuits that require switching signals near the supply rails under high-voltage conditions. The 400 Ohm on-resistance is suitable for general-purpose analog switching but may introduce attenuation in high-impedance sensor interfaces. Verify that the 400 ns switching speed meets the system timing requirements compared to faster SPST alternatives.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4509ESE belongs to the MAX4508/MAX4509 family of fault-protected multiplexers. These devices are pin-compatible with industry-standard DG508/DG509 parts, facilitating direct upgrades or replacements in existing designs. The series is characterized by its ability to handle overvoltage conditions while maintaining low leakage and reliable signal integrity in harsh environments.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4508 is the single-channel 8-to-1 variant within the same family. For direct functional substitution in dual 4-to-1 configurations, verify compatibility with other Maxim fault-protected multiplexers such as the MAX4507 or MAX4508 if pinout adjustments are acceptable.