MAX4742EKA+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4742EKA+T is a dual single-pole/single-throw (SPST) analog switch manufactured by Analog Devices / Maxim Integrated. It operates from a single +1.6V to +3.6V supply and features two normally closed (NC) switches. The device provides low on-resistance of 0.8Ω maximum at +3V, with 0.08Ω matching and 0.18Ω flatness. It handles continuous currents up to 150mA and consumes less than 1µW of quiescent power. Switching speeds are fast, with turn-on time of 24ns maximum and turn-off time of 16ns maximum. The logic input is compatible with 1.8V CMOS when using a +3V supply.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Dual SPST configuration with normally closed contacts
• Low on-resistance for high current handling
• Fast switching speeds with minimal delay
• Ultra-low quiescent power consumption

Analog Switches, Multiplexers, Demultiplexers Applications

• Power routing in battery-powered systems
• Audio and video signal routing
• Low-voltage data-acquisition systems
• Communications circuits and PCMCIA cards
• Cellular phones and modems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm the package type matches the SOT-23-8 specification. Ensure the operating temperature range meets the -40°C to +85°C requirement. Check for RoHS compliance status as indicated in the datasheet. Validate that the ordering suffix corresponds to the correct tape and reel packaging format.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring normally closed analog switching within a low-voltage environment. Consider the 0.8Ω on-resistance limit when designing for high-current paths. Ensure the control logic voltage levels align with the 1.8V CMOS compatibility at +3V operation. Evaluate the thermal dissipation capabilities if operating near the upper temperature limits.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4741/MAX4742/MAX4743 family of low-voltage analog switches. While the MAX4741 offers normally open switches and the MAX4743 provides mixed NO/NC functionality, the MAX4742 specifically provides two normally closed channels. All variants share similar electrical characteristics regarding speed, resistance, and power consumption.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct substitutes include the MAX4741EKA+T for normally open configurations and the MAX4743EKA+T for mixed contact types. These parts share identical pinouts and electrical specifications except for the switch state. Verify that the application circuitry supports the specific NC or NO requirements before swapping.