FSA3157BFHX

Analog Switches, Multiplexers, Demultiplexers Overview

The FSA3157BFHX is a low-voltage UHS SPDT analog switch or 2:1 multiplexer/demultiplexer bus switch from Fairchild Semiconductor. Fabricated with advanced sub-micron CMOS technology, it features break-before-make select circuitry to prevent signal disruption during switching. The device operates within a VCC range of 1.65V to 5.5V and supports rail-to-rail signal handling. It offers an ultra-small MicroPak leadless package, low on-resistance of less than 10Ω typical at 3.3V VCC, and overvoltage tolerance of the control input up to 7.0V independent of VCC.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Break-before-make enable circuitry prevents signal disruption on the B port during select pin switching
• Control input tolerates voltages up to 7.0V independent of the VCC operating range
• Rail-to-rail signal handling capability for both analog and digital applications

Analog Switches, Multiplexers, Demultiplexers Applications

• Analog and digital signal routing in portable devices
• Multiplexing/demultiplexing in USB and high-speed data lines
• Signal switching in battery-powered consumer electronics

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component authenticity by checking the marking code and package integrity against official Fairchild Semiconductor specifications. Ensure the ordering suffix BFHX corresponds to the required MicroPak tape-and-reel packaging configuration. Confirm RoHS compliance status through the manufacturer's current documentation before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a single-pole double-throw analog switch is required with low on-resistance and high voltage tolerance on the control line. The MicroPak package is suitable for space-constrained designs. Verify that the operating voltage range of 1.65V to 5.5V matches the system power supply requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

The FSA3157BFHX belongs to the TinyLogic family of low-voltage universal high-speed logic switches. It is part of a series including variants like FSA3157 and FSA3157B, differentiated primarily by packaging and specific electrical characteristics. This model specifically utilizes the MicroPak leadless package format.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Consider the FSA3157B as a potential alternative if package compatibility allows. Verify electrical parameters such as on-resistance and breakdown voltage against the original design requirements before substitution.