SN54LS682J

Comparators Overview

The SN54LS682J is an 8-bit magnitude and identity comparator manufactured by Texas Instruments. It compares two 8-bit binary words (A and B) to determine their relationship, providing inverted outputs for A=B, A>B, and A<B conditions. The device features pull-up resistors on the B inputs and operates within a temperature range of -55°C to 125°C. It utilizes a 20-pin ceramic dual in-line package (CDIP) with glass-sealed construction, designed for military-grade reliability and high-temperature stability.

Comparators Feature Summary

• Performs 8-bit magnitude comparison between two binary words
• Includes internal pull-up resistors on B inputs
• Provides inverted logic outputs for equality and inequality states
• Constructed with hermetically sealed ceramic packaging for harsh environments

Comparators Applications

• Military avionics systems requiring high-temperature operation
• Industrial control systems needing robust digital comparison
• Data acquisition hardware performing binary word validation

Comparators Procurement Notes

Verify the specific suffix 'J' indicates the ceramic DIP package variant. Confirm the component meets MIL-SPEC requirements if intended for defense applications. Check datasheet revisions for any changes in pinout or electrical characteristics compared to older production lots. Ensure compatibility with existing board layouts designed for 20-pin CDIP footprints.

Comparators Selection Notes

Select this component when 8-bit binary comparison is required in extreme temperature environments. The LS series offers standard speed suitable for most digital logic interfaces. Consider the ceramic package for radiation resistance or mechanical durability needs where plastic packages are insufficient. Verify power supply voltage levels match system specifications before integration.

Comparators Part Context

This part belongs to the Texas Instruments SN54xx series of military-grade logic devices. The SN54LS682 specifically addresses magnitude comparison tasks. It differs from consumer-grade SN74LS variants by offering extended temperature ranges and hermetic sealing. The LS technology provides a balance of speed and power consumption appropriate for complex digital systems.

Comparators Replacement Considerations

SN54LS682J.A is listed as an active alternative with identical functionality. Verify pin compatibility and electrical parameters before substitution. No other direct cross-model replacements are confirmed in public documentation.