MAX4738EUD+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4738EUD+T 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 an on-resistance of 4.5Ω maximum at +3V and 3Ω maximum at +5V, with 0.4Ω channel matching and 1.2Ω flatness. It offers low leakage current (<0.5nA), high off-isolation (-55dB at 10MHz), and low crosstalk (-80dB at 10MHz). The IC supports rail-to-rail signal handling, CMOS logic compatibility, and break-before-make switching. It is housed in a 14-pin TSSOP package and operates within a temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Quad SPST configuration with four normally closed channels for reliable signal routing
• Low on-resistance and excellent channel matching for minimal signal distortion
• Rail-to-rail signal handling capability across the full supply voltage range
• CMOS logic compatible inputs allowing operation with mixed logic levels

Analog Switches, Multiplexers, Demultiplexers Applications

• USB 1.1 data line switching
• Audio signal path switching
• Portable equipment signal routing
• Telecommunications equipment

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the ordering suffix matches the required package type and RoHS compliance status. Ensure the specific variant corresponds to the intended application requirements before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a quad SPST normally closed switch is required for low-voltage applications. Consider the 14-pin TSSOP package for surface-mount assembly. Evaluate the on-resistance and capacitance specifications against the signal integrity requirements of the target circuit design.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4737/MAX4738/MAX4739 family of low-voltage, low on-resistance analog switches. The MAX4738 specifically provides four normally closed switches, distinguishing it from the MAX4737 which offers normally open switches and the MAX4739 which combines both types.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct substitutes include the MAX4737EUD+ and MAX4739EUD+. Verify functional differences regarding switch state (normally open vs. normally closed) before substitution.