DM54LS113W/883

Overview

The DM54LS113W/883 is a dual J-K flip-flop manufactured by National Semiconductor, designed for military and aerospace applications under MIL-STD-883 screening. It operates on a nominal 5 V supply with a maximum current consumption of 36 mA. The device features negative edge triggering and utilizes a 14-pin ceramic flatpack (DFP) package. Key electrical characteristics include a propagation delay of 11 ns at nominal supply voltage. The component supports an operating temperature range from -55 °C to 125 °C and includes open-collector output capabilities.

Feature Summary

• Dual J-K flip-flop configuration with negative edge triggering
• Military-grade MIL-STD-883 screening qualification
• Open-collector output structure for flexible interfacing
• High-temperature ceramic flatpack packaging

Applications

• Aerospace digital logic systems
• Military-grade data storage registers
• High-reliability sequential circuit design
• Spacecraft control logic modules

Procurement Notes

Verify the specific MIL-STD-883 screening level (e.g., 38535Q/M or 38534H) required for your application, as this affects qualification status. Confirm that the open-collector outputs align with your system's pull-up requirements. Ensure the 14-pin ceramic flatpack form factor fits your board layout constraints. Validate that the -55°C to 125°C temperature range meets your environmental specifications before finalizing procurement.

Selection Notes

Select this component when dual J-K flip-flops are required in harsh environments. The open-collector outputs necessitate external pull-up resistors, which must be accounted for in timing calculations. Consider the 11 ns propagation delay for high-speed synchronous designs. The ceramic package provides superior thermal and mechanical stability compared to plastic alternatives, making it suitable for vibration-prone applications.

Part Context

This part belongs to the National Semiconductor 54LSxx series, a low-power Schottky TTL family known for reduced power dissipation while maintaining speed. The '/883' suffix indicates compliance with MIL-STD-883 standards, distinguishing it from commercial variants. It serves as a robust alternative to standard commercial flip-flops in defense and space sectors where reliability is critical.

Replacement Considerations

Direct replacements must match the 54LS logic family and MIL-STD-883 screening. Verify pin compatibility with the 14-CFlatPack package. Cross-reference with other manufacturers offering equivalent military-grade dual J-K flip-flops, ensuring identical electrical parameters and temperature ranges.