MAX4742EUA+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4742EUA+ is a dual single-pole/single-throw (SPST) analog switch manufactured by Analog Devices Inc./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 max at +3V and 2.5Ω max at +1.8V, with high current handling capacity of 150mA continuous. Key electrical parameters include turn-on time of 24ns max (+3V), turn-off time of 16ns max (+3V), off-isolation of -55dB at 1MHz, and crosstalk of -110dB at 1MHz. It consumes less than 1µW quiescent power and supports rail-to-rail analog signal switching within the supply range.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Dual SPST configuration with normally closed contacts for signal routing
• Low on-resistance ensuring minimal signal loss across voltage ranges
• High-current handling capability supporting continuous loads up to 150mA
• Ultra-low quiescent power consumption suitable for battery-operated systems

Analog Switches, Multiplexers, Demultiplexers Applications

• Power routing in portable electronic devices
• Audio and video signal routing applications
• Low-voltage data-acquisition systems
• Communications circuits and PCMCIA cards
• Cellular phones and modem interfaces

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity upon receipt, as the µMAX package requires careful handling during soldering. Ensure compliance with RoHS directives if required by your manufacturing standards. Cross-reference ordering information to confirm the specific suffix matches your design requirements before finalizing procurement orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the MAX4742EUA+ when a dual normally closed analog switch is required for low-voltage single-supply operation. This component is appropriate for designs needing high current handling and fast switching speeds under 1.6V to 3.6V rails. Consider the µMAX package constraints regarding thermal dissipation and board space compared to SOT23 alternatives if pin count or footprint size is a critical design parameter.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4742EUA+ belongs to the MAX4741/MAX4742/MAX4743 family of low-voltage analog switches. While the MAX4741 offers normally open contacts and the MAX4743 provides mixed NO/NC functionality, the MAX4742 specifically provides dual normally closed paths. All variants share identical electrical characteristics and packaging options, differing only in internal contact logic state.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes within the same family include the MAX4741EUA+ and MAX4743EUA+. These parts share identical pinouts, electrical specifications, and package dimensions. Designers must verify that the change in contact logic (Normally Open vs. Normally Closed) aligns with the circuit's default state requirements without necessitating external pull-up or pull-down modifications.