MAX4661EWE

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4661EWE is a quad single-pole/single-throw (SPST) CMOS analog switch manufactured by Analog Devices Inc./Maxim Integrated. It features a maximum on-resistance of 2.5Ω with guaranteed matching and flatness of 0.5Ω over the signal range. The device supports rail-to-rail analog signal handling and operates from a single +4.5V to +36V supply or dual ±4.5V to ±20V supplies. It includes TTL/CMOS-compatible control inputs and provides greater than 2kV ESD protection. The component is housed in a 16-pin Wide SOIC package and functions within an operating temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Low on-resistance of 2.5Ω max with guaranteed channel matching and flatness of 0.5Ω max
• Rail-to-Rail analog signal handling capability for full voltage range operation
• TTL/CMOS-compatible logic inputs ensuring compatibility across the entire supply voltage range
• ESD protection exceeding 2kV per Method 3015.7

Analog Switches, Multiplexers, Demultiplexers Applications

• Reed relay replacement
• Avionics test equipment
• ADC systems
• Communication systems
• Audio-signal routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix 'EWE' to confirm the wide SOIC package and industrial temperature range (-40°C to +85°C). Ensure that the logic supply pin VL is correctly connected to maintain TTL/CMOS compatibility during operation. Confirm that the power-supply sequencing adheres to the recommended guidelines to prevent damage, as CMOS devices require proper V+ and V- application before logic inputs.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the MAX4661EWE when four normally closed SPST switches are required for low-distortion applications. This part is suitable for replacing mechanical relays where lower power consumption and smaller board space are priorities. Verify that the system requires rail-to-rail signal handling and that the 2.5Ω on-resistance meets the circuit's loss requirements. Consider the 16-pin Wide SOIC package constraints for PCB layout.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4661EWE belongs to the MAX4661/MAX4662/MAX4663 family of quad analog switches. While the MAX4661 offers four normally closed switches, the MAX4662 provides four normally open switches, and the MAX4663 combines two of each with break-before-make functionality. All variants share identical electrical characteristics regarding on-resistance, leakage, and supply ranges, differing only in switch configuration.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.