MAX4738EUD+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4738EUD+ is a quad single-pole/single-throw (SPST) analog switch manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +1.8V to +5.5V supply and features four normally closed (NC) switches. The device provides a maximum on-resistance of 4.5Ω at +3V and 3.0Ω at +5V, with an on-resistance match of 0.4Ω and flatness of 1.2Ω. It exhibits low leakage current (<0.5nA), high off-isolation (-55dB at 10MHz), and low crosstalk (-80dB at 10MHz). The component supports rail-to-rail signal handling, has a 300MHz bandwidth, and includes break-before-make switching characteristics. It is housed in a 14-pin TSSOP package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Four normally closed SPST analog switches designed for USB 1.1 and audio applications
• Low on-resistance with guaranteed matching and flatness across the signal range
• Rail-to-rail signal handling capability compatible with CMOS logic levels
• High off-isolation and low crosstalk for maintaining signal integrity

Analog Switches, Multiplexers, Demultiplexers Applications

• USB 1.1 data line switching
• Audio signal routing
• Signal multiplexing in low-voltage systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and RoHS compliance status. Ensure that the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity. Cross-reference the part number with the latest datasheet revision to confirm pinout and electrical specifications match the design requirements before finalizing orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the MAX4738EUD+ when normally closed switch states are required upon power-up or logic low input. Compare its 4.5Ω on-resistance and 15pF on-channel capacitance against other series members like the MAX4737 if normally open configurations are needed instead. Consider the 14-pin TSSOP package constraints and verify that the single-supply voltage range meets the system's power budget and logic level compatibility requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the MAX4737/MAX4738/MAX4739 family of low-voltage, low on-resistance quad SPST analog switches. While electrically similar regarding resistance and speed, the MAX4738 differs from the MAX4737 and MAX4739 by utilizing normally closed contacts rather than normally open ones. This distinction dictates the default state of the analog signals passing through the switches.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4737EUD+ serves as a functional substitute if normally open switches are acceptable. The MAX4739EUD+ offers a mixed configuration of two normally open and two normally closed switches.