DM54L72W/883

Overview

The DM54L72W/883 is a single J-K flip-flop manufactured by National Semiconductor (Texas Instruments). It utilizes Low-Power Schottky TTL technology and operates on a 5 V supply. The device features asynchronous preset and clear inputs, with clocking controlled by the negative edge of the clock signal. It is housed in a 14-pin ceramic flatpack package designed for military-grade reliability.

Feature Summary

• Single J-K flip-flop configuration with dedicated preset and clear functions
• Negative-edge triggered clock operation for precise timing control
• Low-Power Schottky (LS) TTL construction for reduced power consumption
• Military-grade ceramic flatpack packaging for harsh environment durability

Applications

• Military aerospace digital logic systems
• High-reliability data storage registers
• Binary counter circuits requiring low power
• Sequential logic state machines in defense equipment

Procurement Notes

Verify that the component matches the specific DM54L72W/883 designation to ensure compatibility with LS-TTL voltage levels and interface requirements. Confirm the presence of the /883 suffix indicating MIL-STD-883 screening standards. Check for lead integrity and ceramic seal quality to maintain environmental resistance. Ensure the supplier provides traceable documentation confirming the manufacturer origin as National Semiconductor or Texas Instruments.

Selection Notes

Select this component when a single J-K flip-flop with low power dissipation is required in a military specification environment. The LS-TTL technology offers a balance between speed and power efficiency compared to standard TTL. The ceramic flatpack package is suitable for applications demanding high thermal stability and hermetic sealing. Consider the negative-edge triggering characteristic for system timing alignment.

Part Context

This part belongs to the DM54 series of military-grade logic devices produced by National Semiconductor. The series encompasses various logic gates, flip-flops, and counters built with robust materials. The DM54L72W/883 specifically addresses sequential logic needs within this family, providing a reliable solution for critical digital applications where standard commercial components are insufficient.

Replacement Considerations

Direct substitutes must match the DM54L72W/883 specifications exactly. Equivalent parts include other manufacturers' military-grade LS-TTL J-K flip-flops in ceramic flatpack packages. Verify pinout compatibility and electrical parameters before substitution. Generic commercial equivalents may not meet the temperature range or screening requirements.