SN74ALS518DW

Comparators Overview

The SN74ALS518DW is an 8-bit identity comparator from Texas Instruments' ALS logic family, housed in a 20-pin SOIC package. It compares two 8-bit binary or BCD words to determine equality. The device features open-collector outputs that assert when inputs are identical. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a propagation delay of 20 ns under standard test conditions.

Comparators Feature Summary

• Performs magnitude comparison on two 8-bit binary or BCD data words
• Provides active-high output signals indicating input equality
• Utilizes open-collector output structure for flexible interfacing

Comparators Applications

• Digital system data validation
• Address matching circuits
• Control logic equality checks

Comparators Procurement Notes

Verify the specific revision status and availability as this component may be subject to end-of-life notices. Confirm pinout compatibility with existing PCB layouts before integration. Ensure supply chain sources provide authentic Texas Instruments products to guarantee electrical performance and reliability standards are met.

Comparators Selection Notes

Select this component when an 8-bit equality check is required using ALS speed characteristics. The open-collector outputs allow for wired-AND configurations or level shifting. Consider the 20-pin SOIC package constraints and thermal requirements for the intended operating environment during design implementation.

Comparators Part Context

This part belongs to the SN74ALS series, designed for high-speed applications requiring lower power consumption than standard TTL. It serves as a digital comparator within the broader logic IC portfolio, offering precise identity detection for parallel data buses in embedded systems.

Comparators Replacement Considerations

SN74ALS521DWR is a related comparator variant with similar bit width but different output structures.