SN74ALS520NSR

Comparators Overview

The SN74ALS520NSR is an octal binary/BCD identity comparator manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 12 ns, 20 ns, or 22 ns depending on conditions. The device utilizes a 20-pin SOIC package and draws a maximum supply current of 19 mA. It functions as an A=B logic comparator with totem-pole outputs and supports surface mount installation across a temperature range of 0°C to +70°C.

Comparators Feature Summary

• Performs eight-bit identity comparison between two binary or BCD inputs
• Provides active-high output indication when input vectors are equal
• Includes dedicated enable pin for controlling comparator operation

Comparators Applications

• Digital data validation circuits
• Address decoding systems
• Memory address matching applications

Comparators Procurement Notes

Verify the specific suffix 'SR' indicates reel packaging configuration distinct from tube variants. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the SOIC-20 footprint matches the target PCB layout requirements exactly.

Comparators Selection Notes

Select this component when eight-bit equality detection is required in high-speed digital designs. The ALS series offers improved speed-power product compared to standard TTL equivalents. Verify that the totem-pole output drive capability meets the load requirements of the subsequent circuit stages.

Comparators Part Context

This part belongs to the SN74ALS520 family of octal identity comparators. It serves as the surface-mount reel variant of the SN74ALS520N through-hole device. The base part number defines the core logical functionality while suffixes denote physical packaging and handling specifications.

Comparators Replacement Considerations

SN74ALS520N is the direct through-hole equivalent with identical electrical characteristics.