MAX4603CWE

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4603CWE is a quad single-pole single-throw (SPST) CMOS analog switch housed in a 16-pin Wide SOIC package. It integrates two normally open and two normally closed switches, offering a maximum on-resistance of 2.5Ω with guaranteed matching of 0.5Ω across channels. The device supports single supplies from +4.5V to +36V or dual supplies from ±4.5V to ±20V. Operating within a commercial temperature range of 0°C to +70°C, it features low off-leakage current of 2.5nA at +85°C and TTL/CMOS-compatible logic inputs.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Rail-to-rail signal handling capability for full voltage swing operation
• Guaranteed on-resistance flatness over the specified signal range
• TTL and CMOS compatible digital control inputs
• High electrostatic discharge protection exceeding 2000V

Analog Switches, Multiplexers, Demultiplexers Applications

• Reed relay replacement in automated test equipment
• Audio-signal routing systems
• Communication systems and PBX/PABX networks
• Avionics applications requiring reliable switching

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'CWE' confirms the commercial temperature range and Wide SOIC package configuration. Ensure the component meets RoHS standards if required by the assembly process. Confirm that the ordering information matches the exact pinout and electrical specifications needed for the target circuit design before finalizing procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a mix of normally open and normally closed contacts is required within a single package. The MAX4603 differs from the MAX4601 (all NC) and MAX4602 (all NO). Verify that the 2.5Ω on-resistance and 200mA continuous current ratings align with the load requirements. Consider the 0°C to +70°C operating range limits compared to the industrial grade MAX4603EWE variant.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4601/MAX4602/MAX4603 family of quad SPST CMOS analog switches manufactured by Analog Devices / Maxim Integrated. The series provides low on-resistance and rail-to-rail signal handling as an alternative to mechanical relays. The MAX4603 specifically combines two normally open and two normally closed switches in one integrated circuit.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4603EWE serves as the industrial temperature range equivalent. For single-channel configurations, consider the MAX4609 or MAX4610 families. Direct replacements must maintain the 16-pin Wide SOIC footprint and similar electrical characteristics regarding on-resistance and supply voltage ranges.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the difference between the MAX4601, MAX4602, and MAX4603?

The MAX4601 contains four normally closed switches, the MAX4602 contains four normally open switches, and the MAX4603 contains two normally open and two normally closed switches.

How does the MAX4603 handle logic levels?

All digital inputs have +0.8V and +2.4V logic thresholds, ensuring compatibility with both TTL and CMOS logic when using ±15V or a single +12V supply.

What is the maximum power dissipation for the MAX4603CWE?

The maximum continuous power dissipation for the 16 Wide SOIC package is 762mW at an ambient temperature of +70°C, derating by 9.52mW/°C above that temperature.