FSA4157AL6X_F087

Analog Switches, Multiplexers, Demultiplexers Overview

The FSA4157AL6X_F087 is a discontinued Single Pole/Double Throw (SPDT) analog switch from onsemi, utilizing sub-micron CMOS technology. It operates within a supply voltage range of 2.7 V to 5.5 V and features an ultra-low maximum on-resistance of 1.15 Ohms at 4.5 V VCC. The device supports a maximum switch DC current of 200 mA and offers fast switching speeds with turn-on times as low as 35 ns and turn-off times down to 15 ns. Designed for break-before-make operation, it includes over-voltage tolerant TTL-compatible control circuitry. The component is housed in a MicroPak-6 package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Ultra-low on-resistance performance ensuring minimal signal loss
• Break-before-make enable circuitry prevents signal shorting during switching
• Over-voltage tolerant control inputs compatible with standard logic levels

Analog Switches, Multiplexers, Demultiplexers Applications

• Mobile handset signal routing
• Baseband processor interface circuits
• Portable electronic equipment signal paths

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

This specific part number is officially listed as discontinued by the manufacturer and is not recommended for new designs. Verification of availability should focus on secondary market distributors or existing stock rather than direct factory orders. Designers must confirm end-of-life status and plan for component obsolescence management strategies before finalizing procurement plans.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component only if the application specifically requires the MicroPak-6 package footprint and can accommodate the 2.7 V minimum supply voltage constraint. Verify that the required switching speed and on-resistance specifications align with the device's AC electrical characteristics. Consider alternative active parts if long-term supply stability is a critical project requirement.

Analog Switches, Multiplexers, Demultiplexers Part Context

The FSA4157A variant belongs to the FSA4157 family of low-voltage SPDT analog switches. While the standard FSA4157 supports a wider voltage range starting at 1.65 V, the FSA4157A is optimized for lower quiescent current when the control input is below the supply voltage. This specific ordering suffix indicates the MicroPak-6 packaging configuration.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The datasheet explicitly states these devices are discontinued and recommends contacting onsemi representatives for information. No specific substitute part numbers are provided in the official documentation.