CD54HC273F3A

The CD54HC273F3A is a military-grade high-speed CMOS octal D-type flip-flop with master reset, manufactured by Texas Instruments for high-reliability digital logic systems. This device integrates eight edge-triggered D-type flip-flops sharing a common clock and an active-low clear input, delivering deterministic data storage and transfer. Operation is specified over the full military temperature range, with a standard HC supply voltage range from 2 V to 6 V providing high noise immunity and balanced output drive. Typical clock frequencies exceed 50 MHz, with propagation delays under 20 ns at 4.5 V, making it suitable for fast synchronous designs. The ceramic dual-in-line (CDIP) package ensures a hermetically sealed environment, guaranteeing long-term reliability under extreme shock, vibration, and humidity conditions.

Applications span military avionics, radar signal processing, secure communication systems, and industrial controllers requiring radiation-hardened or high-temperature performance. It frequently serves as a temporary data register, address latch, or control state machine element in mission-critical embedded platforms. Procurement and design engineers should note that ceramic-packaged military logic devices often face supply constraints, extended lead times, and obsolescence trends, necessitating early lifecycle planning and verification of authorized sourcing. Ensuring traceability, documentation for military standards compliance, and long-term availability are essential for maintaining system integrity in defense and aerospace programs.