SNJ54LS257BW

Signal Switches, Multiplexers, Decoders Overview

The SNJ54LS257BW is a military-grade quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an extended operating temperature range from -55 °C to +125 °C. The device features tri-state outputs for bus-oriented applications and is housed in a 16-pin ceramic flatpack (CFP) package.

Signal Switches, Multiplexers, Decoders Feature Summary

• Contains four independent multiplexers capable of selecting between two input lines per channel
• Provides tri-state outputs to facilitate direct connection to system buses without external buffers
• Designed for operation across the full military temperature specification range

Signal Switches, Multiplexers, Decoders Applications

• Military avionics signal routing
• Defense communication systems
• Harsh environment data acquisition

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify that the component matches the specific SNJ54LS257BW designation, as ordering suffixes determine package type and qualification level. Confirm the presence of the military grade marking and ensure the supplier provides traceability documentation required for defense procurement standards.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this part when a quad multiplexer with tri-state capability is required for military specifications. Ensure the design accommodates the CFP package dimensions and thermal characteristics suitable for high-temperature environments up to 125 °C.

Signal Switches, Multiplexers, Decoders Part Context

This component belongs to the SN54LS257B family of quadruple 2-line to 1-line data selectors/multiplexers. It is distinct from commercial variants by its extended temperature rating and ceramic packaging, intended for ruggedized applications requiring high reliability.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SNJ54LS257BJ serves as a pin-compatible alternative within the same family, offering identical functionality but utilizing a ceramic dual in-line package instead of the flatpack configuration.