CD54HC125F3A

The CD54HC125F3A from Texas Instruments is a high-speed CMOS quad buffer with three-state outputs, fabricated in a hermetic ceramic dual in-line (CDIP) package and screened for military and high-reliability applications. The device belongs to the HC logic family, offering balanced propagation delay typically on the order of 10 ns while maintaining exceptionally low quiescent current. Its three-state outputs allow direct interface with bus-oriented systems, and the wide supply voltage range of 2 V to 6 V provides flexible design margins. The ceramic package with gold-plated leads ensures robust thermal and mechanical integrity, supporting continuous operation across the full military temperature range of −55 °C to +125 °C.

Typical deployments include digital signal buffering and bus driving in avionics computers, mission-critical radar signal processing, guidance and navigation systems, and ruggedized industrial controllers where deterministic logic-level translation is required. The part is frequently used to drive memory address buses and clock distribution networks in embedded processing modules for defense and aerospace platforms. From a procurement perspective, the F3A suffix denotes full compliance with military screening standards such as MIL-STD-883, encompassing extended temperature testing, burn-in, and lot traceability. While ceramic DIP packages can be subject to diminishing production volumes for commercial grades, Texas Instruments’ high-reliability and military product lines maintain long life cycles. ZZX Electronics sources this device through authorized, traceable channels to mitigate obsolescence risk and support program longevity.