CD54ACT273F3A

The Texas Instruments CD54ACT273F3A is a military octal D-type flip-flop with reset, a member of the CDx4ACT273 family fabricated in advanced CMOS logic and supplied in a hermetically sealed ceramic dual in-line package (CDIP). This edge-triggered device integrates eight flip-flops that accept data on a common clock input and feature a synchronous master reset capable of clearing all outputs to a logic low. As part of the ACT series, it offers TTL-compatible input thresholds while maintaining the low power and high noise immunity typical of CMOS, and is rated for full military temperature operation from –55°C to +125°C. The monolithic design provides latch-up immunity exceeding industry norms, and the CDIP package ensures reliable performance under thermal cycling, moisture, and mechanical stress.

Typical end-use scenarios span mil-aero and high-reliability domains including flight control computers, radar signal processing, secure communications, guidance systems, and space-qualified telemetry modules where deterministic data latching and reset functions are critical. The 54-series designation and ceramic packaging align with MIL-STD-883 screening requirements, making the part suitable for defense programs demanding component traceability and long-term reliability. Procurement professionals should evaluate potential obsolescence risk, as mature CMOS logic families often transition to limited-support status, though military-grade variants may retain extended production windows. When sourcing, verifying lead finish codes (such as F3A for specific plating or RoHS compliance) and confirming authorized distribution chain authenticity are essential to ensure conformance to program specifications and export control requirements.