DM54L73J/883

Overview

The DM54L73J/883 is a dual J-K flip-flop integrated circuit manufactured by National Semiconductor. It features two independent negative-edge-triggered master-slave flip-flops with clear and complementary outputs. The device utilizes LS-TTL logic technology and is housed in a 14-pin ceramic dual in-line package (DIP). It operates within a supply voltage range of 5 V, with a maximum operating frequency of 30 MHz. The unit supports an extended temperature range from -55 °C to 125 °C and meets MIL-STD-883 Class C screening standards.

Feature Summary

• Dual negative-edge-triggered master-slave J-K flip-flops
• Ceramic DIP packaging for high reliability
• MIL-STD-883 Class C screening qualification

Applications

• Military aerospace digital systems
• High-reliability computing equipment
• Harsh environment data processing

Procurement Notes

Verify the component's authenticity through authorized channels due to its military-grade classification. Confirm that the part matches the specific MIL-STD-883 Class C screening requirements. Ensure the ceramic package integrity is intact upon receipt. Check for compliance with legacy sourcing protocols as this component may be discontinued or available only through specialized distributors.

Selection Notes

Select this component when dual J-K flip-flops are required in environments demanding extreme temperature stability and radiation hardness. The ceramic package provides superior protection against moisture and mechanical stress compared to plastic variants. Consider the LS-TTL speed characteristics and power consumption profile relative to system constraints. Verify compatibility with existing TTL logic families in the design architecture.

Part Context

This part belongs to the DM54 series of high-performance logic devices designed for military applications. It is functionally similar to the commercial DM74LS73 but offers enhanced durability and environmental tolerance. The 'J/883' suffix indicates adherence to specific military screening standards. It serves as a fundamental building block for sequential logic circuits in defense and aerospace electronics.

Replacement Considerations

DM54LS73A/883C