JD54F374SRA

Overview

The JD54F374SRA is an octal D-type flip-flop with TRI-STATE outputs from National Semiconductor's 54F series. It contains one element with eight bits, featuring individual D-type inputs and buffered clock functionality. The device operates within a temperature range of -55°C to +125°C (TA). It utilizes a 20-pin CDIP package with a lead span of 0.300 inches (7.62mm) for through-hole mounting.

Feature Summary

• Octal D-type flip-flop architecture with TRI-STATE outputs
• Extended military-grade operating temperature range
• Buffered clock input for signal integrity

Applications

• Military aerospace systems requiring extended temperature tolerance
• Industrial control bus drivers
• High-reliability data storage registers

Procurement Notes

Verify the manufacturer origin carefully, as National Semiconductor assets are now part of Texas Instruments. Confirm that the specific suffix 'JD' denotes the required military temperature grade (-55°C to +125°C) and ceramic DIP packaging. Ensure compatibility with legacy 54F logic voltage levels before procurement.

Selection Notes

Select this component when extended temperature performance is mandatory for octal register applications. Compare against standard commercial F374 variants if environmental constraints allow. Verify pinout compatibility with existing 20-CDIP footprints and ensure TRI-STATE output requirements match the system bus architecture.

Part Context

This part belongs to the 54F family, known for high-speed operation compared to older TTL standards. The JD prefix typically indicates military qualification and ceramic packaging, distinguishing it from plastic commercial variants like the SN54F374 or standard 54F374.

Replacement Considerations

Direct substitutes include other 54F374 variants in 20-CDIP packages. Verify that replacement parts maintain the same extended temperature rating and TRI-STATE output configuration to ensure functional equivalence in critical applications.