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 and flatness of 0.5Ω across the signal range. 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, TTL/CMOS-compatible logic inputs, and rail-to-rail signal handling capabilities.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Integrates four SPST switches with a mixed configuration of two normally open and two normally closed channels.
• Provides low on-resistance with high channel-to-channel matching and flatness over the specified signal range.
• Supports rail-to-rail analog signal handling for both single and dual power supply configurations.
• Features TTL/CMOS-compatible digital control inputs for direct interfacing with standard logic families.

Analog Switches, Multiplexers, Demultiplexers Applications

• Reed relay replacement in automated test equipment
• Audio-signal routing systems
• Communication systems and PBX/PABX applications

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'C' confirms the 0°C to +70°C commercial operating temperature range and 'WE' indicates the 16-pin Wide SOIC package. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design accounts for the absolute maximum ratings regarding voltage differentials and continuous current limits to maintain device reliability.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a mixed NO/NC switch configuration is required within a single package. Compare against MAX4601 (all NC) and MAX4602 (all NO) if uniform switch polarity is sufficient. Verify that the 2.5Ω on-resistance meets system loss requirements and that the 0°C to +70°C temperature range aligns with environmental constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4601/MAX4602/MAX4603 family of quad analog switches manufactured by Analog Devices / Maxim Integrated. The series is designed as a solid-state alternative to mechanical relays, offering reduced board space and higher reliability. The MAX4603 variant specifically addresses designs requiring both make and break contacts in a compact form factor.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

MAX4603EWE+ offers identical electrical performance but extends the operating temperature range to -40°C to +85°C. Other family members include MAX4601CWE+ (four NC switches) and MAX4602CWE+ (four NO switches). Verify pinout compatibility and thermal management requirements when substituting variants.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the specific switch configuration of the MAX4603?

The MAX4603 contains four SPST switches configured as two normally open (NO) and two normally closed (NC).

How does the on-resistance behave across the signal range?

The on-resistance is guaranteed to be flat with a maximum variation of 0.5Ω over the specified signal range.

Is the device compatible with standard logic levels?

Yes, the digital inputs have +0.8V and +2.4V thresholds, ensuring TTL/CMOS compatibility with ±15V or single +12V supplies.