DM54S74J/883C

Overview

The DM54S74J/883C is a single positive-edge-triggered D flip-flop with preset and clear inputs, manufactured by National Semiconductor. It utilizes standard Schottky TTL technology and is housed in a 14-pin ceramic dual in-line package (DIP). The device operates within a military temperature range of -55°C to 125°C and features a nominal propagation delay of 10 ns at a 5 V supply. It is screened to MIL-STD-883 Class C standards for high reliability.

Feature Summary

• Single D-type flip-flop configuration with dedicated preset and clear control inputs
• Positive-edge triggering mechanism for precise data capture
• Military-grade screening compliant with MIL-STD-883 Class C requirements
• Robust ceramic DIP packaging designed for harsh operational environments

Applications

• High-reliability military aerospace digital systems
• Spacecraft telemetry and command logic circuits
• Harsh environment data storage registers
• Precision timing and synchronization modules

Procurement Notes

Verify the specific suffix 'J/883C' against official manufacturer documentation to confirm MIL-STD-883 Class C screening levels. Ensure the component matches the original National Semiconductor specifications rather than generic equivalents. Request full traceability records and test reports to validate military grade compliance before integration into critical systems.

Selection Notes

Select this component when a single D flip-flop with asynchronous control is required in extreme thermal conditions. The ceramic package provides superior hermeticity compared to plastic variants. Consider the 10 ns propagation delay for high-speed timing constraints within standard TTL logic families.

Part Context

This part belongs to the DM54 series of military-grade logic devices produced by National Semiconductor. It represents a specialized variant optimized for defense applications requiring strict environmental tolerance and long-term stability beyond commercial specifications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.