SNJ54HC157FK

Signal Switches, Multiplexers, Decoders Overview

The SNJ54HC157FK is a quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports an operating temperature range from -55°C to 125°C. The device features four independent multiplexers controlled by a common address select input (A/B) and an active-low strobe input (G). It utilizes a 20-pin LCCC package with dimensions of 8.89 mm by 8.45 mm.

Signal Switches, Multiplexers, Decoders Feature Summary

• Contains four independent 2-to-1 data selectors for routing data sources
• Features TTL-compatible CMOS inputs for direct interface with logic devices
• Includes an active-low strobe input that forces all outputs low when asserted

Signal Switches, Multiplexers, Decoders Applications

• Multiplexing and data routing applications
• Switching 4-bit data buses between source devices
• System controller data selection interfaces

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix FK corresponds to the 20-pin LCCC package configuration. Confirm the part status as Active Production in current TI documentation. Ensure compatibility with military-grade environmental specifications if required, as indicated by the SNJ prefix. Validate pinout alignment with the 20-pin LCCC mechanical drawing before integration.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for designs requiring high-speed data switching with wide voltage flexibility. The HC series offers low power consumption suitable for battery-operated systems. Consider the 20-pin LCCC package for hermetic sealing requirements or specific board space constraints. Ensure input transition times meet recommended operating conditions to prevent oscillation.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the SNx4HC157 family of quadruple multiplexers. It shares functional characteristics with other HC series logic components but is distinguished by its specific package type and extended temperature rating. The SNJ prefix typically denotes military-grade reliability standards compared to commercial variants.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SNJ54HC157J

Signal Switches, Multiplexers, Decoders FAQ

How does the strobe input affect the outputs?

A high level at the strobe (G) terminal forces all Y outputs low, regardless of the state of the address select or data inputs.

What is the function of the A/B input?

The A/B input serves as the address select line, controlling which of the two data sources (A or B) is routed to the corresponding Y output for all four channels simultaneously.