CD54HCT574F3A

Discontinued by Texas Instruments, the CD54HCT574F3A is a military-grade high-speed CMOS octal D-type flip-flop with 3-state outputs, designed for positive-edge-triggered data storage and transfer in high-reliability systems. Fabricated in silicon-gate CMOS technology, this HCT-logic device provides TTL-compatible input thresholds while maintaining the low power consumption of CMOS, with a typical speed-power product in the 50–60 pJ range. The non-inverting outputs feature three-state control, allowing direct interface to bus-oriented architectures, and the ceramic dual-in-line package (CDIP) ensures robust thermal and mechanical performance across extreme military temperature ranges. Typical use cases include data latching, temporary storage, and signal buffering in mission-critical embedded computing, weapons control, radar processing, and satellite communication subsystems.

This part is officially obsolete and no longer manufactured by Texas Instruments. ZZX Electronics provides sustaining stock sourced from legacy distributions with full date-code traceability, supporting defense and aerospace programs that require form-fit-function replacements without the prohibitive cost and schedule impact of board redesign or requalification. The CD54HCT574F3A carries standard military processing, meeting the hermeticity and reliability demands of MIL-STD-883 environments, making it a credible drop-in solution for maintaining fielded avionics, naval combat systems, and other long-deployment platforms where recertification timelines render new-part qualification impractical.