MAX4738EUD

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4738EUD+ is a quad single-pole single-throw (SPST) normally-closed analog switch IC manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates on a single supply voltage ranging from 1.8 V to 5.5 V and features a maximum on-resistance of 4.5 Ohms. The device includes four independent channels housed in a 14-TSSOP surface-mount package. Key electrical specifications include a maximum switching time of 80 ns for turn-on and 40 ns for turn-off, with a power dissipation rating of 500 mW. It supports a DC switch current of 100 mA and maintains an operating temperature range from -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Normally-closed signal path configuration ensures default connectivity when unpowered or inactive.
• Low on-resistance characteristic facilitates minimal signal attenuation across the conductive channel.
• Single-supply operation simplifies integration into low-voltage digital and analog systems.

Analog Switches, Multiplexers, Demultiplexers Applications

• Signal routing in data acquisition systems
• Audio and video signal switching matrices
• Instrumentation input multiplexing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the complete part number including suffixes such as EUD+ against official manufacturer documentation to ensure correct configuration and compliance. Confirm RoHS status and packaging details directly with authorized distributors, as availability may vary by region and specific ordering codes.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a normally-closed state is required for signal paths without external control power. Ensure the system voltage remains within the 1.8 V to 5.5 V range and that the thermal environment stays within the specified -40°C to +85°C operational limits for reliable performance.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the MAX4737-MAX4739 family of low-power, high-speed analog switches. The MAX4738 variant specifically provides normally-closed contacts, distinguishing it from the normally-open MAX4737 and the complementary MAX4739. All members share similar pinouts and electrical characteristics, differing primarily in contact state logic.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes within the same family include the MAX4737EUD+ (normally-open) and MAX4739EUD+ (complementary). Cross-family replacements require verification of on-resistance, voltage range, and package compatibility.