CD54HCT74F3A

Overview

The CD54HCT74F3A is a high-speed CMOS logic dual positive-edge triggered D flip-flop with set and reset functions, manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 53 ns. The device supports a load capacitance of 50 pF and is housed in a 14-pin ceramic glass-sealed CDIP package with a terminal pitch of 2.54 mm. It is designed for military-grade reliability, functioning across an extended temperature range from -55°C to +125°C.

Feature Summary

• Dual positive-edge triggered D flip-flops integrated into a single package
• Includes dedicated set and reset control inputs for direct state management
• Military-grade construction utilizing a ceramic glass-sealed CDIP package
• High-speed CMOS technology ensuring low power consumption and fast switching

Applications

• Military aerospace digital systems requiring radiation-hardened or high-reliability logic
• Industrial control applications operating in extreme temperature environments
• Data storage registers in defense communication equipment
• State machine implementations in critical infrastructure electronics

Procurement Notes

Verify the specific ordering suffix F3A confirms the military grade specification and ceramic package type when sourcing. Ensure compatibility with existing board layouts for the 14-CDIP footprint. Confirm that the supplier provides traceability documentation required for defense or aerospace procurement standards. Check availability status as restricted components may have limited production runs.

Selection Notes

Select this component when dual flip-flops with asynchronous set and reset are required in harsh environments. The HCT series ensures TTL-compatible input levels while maintaining CMOS output characteristics. Consider the 53 ns propagation delay for timing constraints in high-speed circuits. Verify that the 14-CDIP package fits the mechanical constraints of the target assembly.

Part Context

This part belongs to the CD54HCT family of high-speed CMOS logic devices designed for military and industrial applications. Unlike commercial variants, the CD54 series utilizes robust packaging suitable for extreme conditions. The 74 series typically denotes standard logic functions, with the 74 designation specifically indicating dual D flip-flops with set and reset capabilities within the broader logic IC portfolio.

Replacement Considerations

• CD54HC74F3A
• CD54HCT74F3

FAQ

What is the maximum operating temperature for the CD54HCT74F3A?

The device is rated for operation up to +125°C.

Does the CD54HCT74F3A include set and reset functionality?

Yes, it includes dedicated set and reset inputs for each of the two flip-flops.