FSA2257MUX

Analog Switches, Multiplexers, Demultiplexers Overview

The FSA2257MUX is a low-voltage dual Single-Pole/Double-Throw (SPDT) bi-directional analog switch fabricated with submicron CMOS technology. It operates within a supply voltage range of 1.65 V to 5.50 V and features an ultra-low maximum on-resistance of 1.3 Ω at 4.5 V VCC, with a maximum RON flatness of 0.3 Ω at +5 V VCC. The device supports fast switching speeds with a maximum turn-on time of 35 ns and a maximum turn-off time of 15 ns. It includes break-before-make enable circuitry and over-voltage tolerant TTL-compatible control inputs. Packaged in a MicroPak-10 surface-mount format, it functions as a multiplexer or demultiplexer.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Ultra-low on-resistance for minimal signal loss
• Break-before-make circuitry prevents signal shorting
• TTL-compatible control inputs for logic integration

Analog Switches, Multiplexers, Demultiplexers Applications

• Cell phones
• Personal Digital Assistants (PDA)
• Mobile devices

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized distribution channels due to the presence of legacy Fairchild Semiconductor branding in historical documentation. Confirm RoHS compliance status via current manufacturer datasheets before integration. Ensure the specific suffix corresponds to the required package variant, as pinouts may differ between MSOP and MicroPak configurations.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when low insertion loss and high-speed switching are critical in portable electronics. The wide operating voltage range accommodates various battery-powered systems. Verify that the MicroPak-10 package dimensions fit the target PCB layout constraints compared to alternative MSOP packages.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the FSA2257 series of analog switches originally developed by Fairchild Semiconductor, now managed by onsemi. The MUX suffix specifically denotes the MicroPak-10 package configuration, distinguishing it from other variants like the L10X which uses a different footprint.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

FSA2257L10X: Offers identical electrical performance but utilizes a MicroPak-10 package; verify pin compatibility. FSA2257: General series reference requiring specific suffix verification for package matching.