SN74ALS518DWE4

Comparators Overview

The SN74ALS518DWE4 is an octal binary or BCD identity comparator manufactured by Texas Instruments. It performs comparisons on two 8-bit words to determine equality. The device features active-high P=Q outputs that indicate when the input words are identical. It operates within a supply voltage range of 4.5V to 5.5V and supports a wide operating temperature range from 0°C to +70°C. Packaged in a 20-pin SOIC (DW) format, it is designed for high-performance logic applications requiring reliable magnitude comparison.

Comparators Feature Summary

• Performs identity comparisons on two 8-bit binary or BCD words
• Provides active-high outputs indicating input word equality
• Operates with standard 5V logic supply voltages

Comparators Applications

• Digital data validation systems
• Memory address matching circuits
• Control logic for equality checks

Comparators Procurement Notes

Verify the specific package marking and date code against the manufacturer's latest documentation to ensure authenticity. Confirm that the component meets the required environmental specifications for your application. Check for any obsolescence notices or lifecycle changes directly from Texas Instruments before finalizing procurement plans.

Comparators Selection Notes

Select this component when an 8-bit identity comparison function is required with active-high output signaling. Ensure the design accommodates the 4.5V to 5.5V supply voltage range. Consider the 20-pin SOIC package dimensions for PCB layout constraints. Verify compatibility with the system's logic family requirements.

Comparators Part Context

This part belongs to the SN74ALS series of high-speed low-power Schottky logic devices. It serves as a specialized comparator within the broader logic IC portfolio, distinct from standard gates or flip-flops. The DWE4 suffix indicates the specific tape-and-reel packaging variant of the DW (SOIC-20) package.

Comparators Replacement Considerations

The SN74ALS518DW is the non-environmental equivalent. Verify pinout and electrical characteristics match exactly before substitution.