SNJ54HC157J

Signal Switches, Multiplexers, Decoders Overview

The SNJ54HC157J is a quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments in a 16-pin ceramic dual in-line package (CDIP). 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 standard CMOS inputs with low input current and TTL-compatible thresholds. Electrical characteristics include a maximum static supply current of 160µA at 6V and output drive capabilities of ±6mA at 5V. Propagation delay varies with load capacitance, ranging from 11ns typical at 50pF to 33ns typical at 150pF under 6V operation.

Signal Switches, Multiplexers, Decoders Feature Summary

• Contains four independent 2-to-1 multiplexers controlled by a common address select input
• Features active-low strobe functionality that forces all outputs to a low state
• Supports direct interfacing with TTL logic devices through compatible input voltage thresholds
• Utilizes high-impedance standard CMOS inputs requiring termination to prevent floating states

Signal Switches, Multiplexers, Decoders Applications

• Multiplexing and routing 4-bit data buses between source devices
• System controller data selection interfaces
• General-purpose digital data switching applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix against the manufacturer's Package Option Addendum to confirm the exact package type, lead finish, and material composition. Ensure the procurement specification matches the required operating temperature range and RoHS compliance status indicated for the specific part variant. Cross-reference the device marking code with official documentation to validate authenticity and production status.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a hermetically sealed ceramic package is required for military or aerospace environments due to its SN54 series designation. Consider the wide operating voltage range and temperature stability for harsh conditions. Evaluate the propagation delay specifications against system timing requirements, noting that delays increase significantly with higher capacitive loads exceeding 50pF.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the SNx4HC157 family of quadruple 2-line to 1-line data selectors. The SN54 series denotes military-grade performance with extended temperature ranges and reliability standards compared to commercial SN74 variants. The HC series indicates high-speed CMOS technology, offering faster switching speeds than legacy LS or ALS families while maintaining low power consumption.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SNJ54HC157FK serves as a pin-compatible alternative within the same family using a 20-pin LCCC package.