MAX4603EWE

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4603EWE is a quad SPST CMOS analog switch featuring two normally open and two normally closed channels in a 16-pin Wide SO package. It provides a maximum on-resistance of 2.5Ω with guaranteed matching and flatness of 0.5Ω over the signal range. The device supports single supplies from +4.5V to +36V or dual supplies from ±4.5V to ±20V, handling rail-to-rail signals. Key electrical parameters include a maximum off-leakage current of 2.5nA at +85°C, turn-on time of 250ns, and turn-off time of 350ns. Operating temperature ranges from -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Handles rail-to-rail analog signals across the full supply voltage range
• Features low on-resistance with guaranteed channel matching and flatness
• Includes TTL/CMOS-compatible control inputs for logic compatibility
• Offers high ESD protection exceeding 2000V per Method 3015.7

Analog Switches, Multiplexers, Demultiplexers Applications

• Reed relay replacement in automated systems
• Test equipment signal routing
• Communication systems including PBX and PABX
• Audio-signal routing applications
• Avionics signal switching

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'EWE' corresponds to the industrial temperature range (-40°C to +85°C) and the 16-pin Wide SOIC package configuration. Confirm that the component meets RoHS standards as indicated by the '+' designation. Ensure the ordering documentation matches the manufacturer's part numbering system for the MAX4603 series to avoid confusion with the MAX4601 or MAX4602 variants which have different switch configurations.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a mixed configuration of normally open and normally closed switches is required within a single package. The MAX4603 provides two NO and two NC channels, distinguishing it from the all-NO MAX4602 or all-NC MAX4601. Consider the 2.5Ω on-resistance and 2.5nA leakage specifications for precision analog applications. Verify that the 16-pin Wide SO package fits the PCB layout constraints compared to SSOP or DIP alternatives.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4603 belongs to the MAX4601/MAX4602/MAX4603 family of quad SPST CMOS analog switches manufactured by Analog Devices (Maxim Integrated). These devices are designed as reliable replacements for mechanical relays, offering lower power consumption and smaller board space. The family shares identical electrical characteristics regarding resistance, leakage, and speed, differing only in the internal connection of the switches (Normally Open vs. Normally Closed).

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes within the same family include the MAX4601EWE (all NC) and MAX4602EWE (all NO), provided the specific NO/NC mix is not critical. Other packages such as MAX4603EAE (SSOP) or MAX4603EPE (DIP) offer pin-compatible alternatives if footprint changes are acceptable.