SNJ54HC148J

Signal Switches, Multiplexers, Decoders Overview

The SNJ54HC148J is a military-grade 8-line to 3-line priority encoder 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 encodes eight active-low data inputs into three-bit binary outputs with the highest-order input taking precedence. It features cascading capabilities via Enable Input (EI) and Enable Output (EO) pins, allowing expansion without external logic. The component is housed in a 16-pin Ceramic Dual In-Line Package (CDIP).

Signal Switches, Multiplexers, Decoders Feature Summary

• Encodes eight active-low data lines into three-bit binary codes with priority decoding.
• Includes dedicated Enable Input (EI) and Enable Output (EO) signals for multi-stage cascading.
• Operates across a wide voltage range of 2V to 6V suitable for diverse power environments.
• Designed for extended industrial and military temperature ranges.

Signal Switches, Multiplexers, Decoders Applications

• N-Bit encoding systems
• Code converters and generators

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify that the specific part number matches the required military grade specifications and ceramic package type. Confirm RoHS exemption status as indicated in the orderable addendum. Ensure the supplier provides traceability documentation consistent with defense or aerospace procurement standards. Validate that the device status is listed as Active Production before finalizing orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when high-reliability priority encoding is required in harsh environments. The CDIP package offers robust mechanical stability compared to plastic variants. Consider the 2V to 6V operating range for compatibility with various logic families. Verify thermal management requirements given the military temperature rating and packaging material properties.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the SNx4HC148 family of priority encoders. The 'SNJ' prefix denotes a military-qualified version produced under specific quality controls. It shares functional characteristics with commercial counterparts like the SN74HC148 but differs in reliability standards and environmental testing protocols. The J suffix specifically identifies the 16-pin CDIP package configuration.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct replacements include other SN54HC148 variants in different packages such as SN54HC148FK. Commercial equivalents like SN74HC148 may be considered if military qualification is not strictly required. Verify pinout compatibility and electrical specifications before substituting.