DM54LS85W/883

Comparators Overview

The DM54LS85W/883 is a 4-bit magnitude comparator from the National Semiconductor LS-TTL series, housed in a 16-pin ceramic flatpack (CDFP16). It provides active high outputs for A>B, A=B, and A<B comparisons. The device operates on a 5V supply with a maximum current of 34 mA and supports temperatures from -55°C to 125°C.

Comparators Feature Summary

• Provides three distinct active high logic outputs representing greater than, equal to, and less than conditions.

Comparators Applications

• Digital data comparison circuits
• Magnitude evaluation systems

Comparators Procurement Notes

Verify the specific suffix 'W/883' confirms the military-grade ceramic flatpack package and compliance with MIL-STD-883 standards. Confirm manufacturer origin as National Semiconductor or Texas Instruments to ensure component authenticity and traceability.

Comparators Selection Notes

Select this component when a 4-bit TTL-compatible magnitude comparator with ceramic packaging is required. Ensure the design accommodates the 5V supply voltage and the specific thermal characteristics of the flatpack form factor.

Comparators Part Context

This part belongs to the 54LS family of logic integrated circuits, characterized by low-power Schottky technology. The 54-series designation indicates military temperature range specifications, distinguishing it from commercial 74-series equivalents.

Comparators Replacement Considerations

Direct substitutes include the 54LS85J or 54LS85N. Verify pin compatibility and package dimensions before replacing the ceramic flatpack variant with other package types.

Comparators FAQ

What are the output states?

The device features active high outputs for A>B, A=B, and A<B conditions.

What is the operating temperature range?

The component supports an extended temperature range from -55°C to 125°C.