MAX4603CAE+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4603CAE+ is a quad single-pole single-throw (SPST) CMOS analog switch featuring a maximum on-resistance of 2.5Ω. It integrates two normally closed and two normally open switches within a 16-pin SSOP package, operating over a commercial temperature range of 0°C to +70°C. The device supports single supplies from +4.5V to +36V or dual supplies from ±4.5V to ±20V. Key electrical parameters include an off-leakage current of 0.5nA maximum at +85°C, turn-on time of 250ns, and turn-off time of 350ns. Logic inputs are TTL/CMOS-compatible with thresholds of 0.8V and 2.4V.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Rail-to-rail signal handling capability across the full supply voltage range
• Guaranteed on-resistance matching between channels for low-distortion performance
• TTL and CMOS logic input compatibility for direct interface with standard digital controllers

Analog Switches, Multiplexers, Demultiplexers Applications

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

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component authenticity by checking the manufacturer's marking against official datasheet specifications. Confirm the ordering suffix matches the required thermal grade and packaging format. Ensure the specific variant aligns with the intended operational environment and pin configuration requirements before finalizing procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a mixed configuration of normally open and normally closed SPST switches is required in a compact footprint. It is suitable for applications demanding low on-resistance and high off-isolation without the complexity of multiplexers. Verify that the supply voltage and signal levels remain within the specified absolute maximum ratings to ensure reliable operation.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4601/MAX4602/MAX4603 family of quad analog switches. While the MAX4601 provides four normally closed switches and the MAX4602 offers four normally open switches, the MAX4603 uniquely combines two of each type. All variants share identical electrical characteristics regarding resistance, leakage, and switching speeds.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes within the same series include the MAX4601CAE+ and MAX4602CAE+. These parts offer identical electrical performance but differ in internal switch configuration. Verify that the application circuitry accommodates the change from mixed NC/NO to all-NC or all-NO states.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the difference between the MAX4603 and the MAX4601?

The MAX4603 contains two normally closed and two normally open switches, whereas the MAX4601 contains four normally closed switches. Both share the same electrical specifications and package options.

Does the MAX4603 support rail-to-rail signal handling?

Yes, the MAX4603 is designed to handle rail-to-rail analog signals, allowing the common terminal to swing from the negative supply to the positive supply.

What is the maximum power dissipation for the MAX4603CAE+ in SSOP?

The maximum continuous power dissipation for the 16-lead SSOP package is 571mW at +70°C, derating by 7.1mW/°C above that temperature.