SNJ54LS674J

Overview

The SNJ54LS674J is a military-grade, 16-bit shift register manufactured by Texas Instruments. It operates within the LS logic series and features three-state outputs for bus-driven applications. The device utilizes a ceramic dual-in-line (CDIP) package with 24 pins. It supports an operating temperature range from -55°C to +125°C. Key control inputs include clock, data, output enable, and mode select functions.

Feature Summary

• Provides 16-bit serial-to-parallel or parallel-to-serial shifting capabilities
• Features three-state outputs compatible with bus architectures
• Includes dedicated mode select input for register or shift operation
• Constructed in hermetically sealed ceramic packaging

Applications

• Military communication systems requiring high reliability
• Defense electronics utilizing bus-driven data transfer
• Aerospace instrumentation with extended temperature requirements

Procurement Notes

Verify the specific ordering suffix against current TI documentation to confirm package type and lead finish specifications. Confirm RoHS exemption status and material compliance requirements prior to procurement. Ensure the supplier provides traceability documentation consistent with military grade standards.

Selection Notes

Select this component when a 16-bit shift register with three-state outputs is required for military environments. Compare against the SN54LS673 if latched outputs are preferred over direct shifting. Verify that the CDIP package dimensions match the target PCB footprint and thermal management strategy.

Part Context

This part belongs to the SN54LS67x family of 16-bit shift registers. It shares functional similarities with the SN74LS674 but offers extended temperature ranges and military qualification. The J suffix denotes a ceramic dual-in-line package suitable for harsh environments.

Replacement Considerations

SN54LS673J serves as a functional substitute if latching is acceptable instead of direct shifting.