SNJ54HC251J

Signal Switches, Multiplexers, Decoders Overview

The SNJ54HC251J is a military-grade data selector/multiplexer from the HC series, packaged in a 16-pin ceramic dual in-line (CDIP) format. It features full binary decoding to select one of eight data sources and provides strobe-controlled complementary 3-state outputs. The device operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range of -55°C to 125°C. Key electrical characteristics include a maximum input clamp current of ±20 mA, continuous output current capability of ±35 mA, and a typical propagation delay of 9 ns at 5 V with a 50 pF load.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides full binary decoding for selecting one of eight independent data inputs
• Features complementary true and inverted outputs with 3-state control
• Capable of driving system buses or up to 15 LSTTL loads directly
• Supports parallel-to-serial conversion functions

Signal Switches, Multiplexers, Decoders Applications

• Bus-oriented systems requiring high-impedance state isolation
• Data routing and multiplexing in military and defense electronics
• Parallel-to-serial data conversion circuits
• High-speed logic interfaces demanding wide voltage tolerance

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify that the ordering suffix 'J' corresponds specifically to the 16-pin CDIP package configuration. Confirm that the component meets QML (Military) certification requirements if intended for defense applications. Ensure compatibility with the specified -55°C to 125°C operating temperature range for your specific environmental conditions.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when military-grade reliability and extended temperature performance are required. The HC series offers low power consumption compared to older logic families while maintaining high-speed operation. Consider the 3-state output capability for bus sharing applications where multiple devices must connect to a common data line without interference.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SNx4HC251 family of data selectors/multiplexers manufactured by Texas Instruments. It serves as the 3-state version of the standard SN54HC151. The family includes various package options such as SOIC, SSOP, and LCCC, but the SNJ54HC251J specifically denotes the ceramic DIP variant suitable for harsh environments.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN54HC251J