SN74ALS520DWRG4

Comparators Overview

The SN74ALS520DWRG4 is an octal binary/BCD identity comparator from the Texas Instruments 74ALS series. It features a 20-pin SOIC package and operates within a 4.5 V to 5.5 V supply range. The device provides eight independent identity comparisons with an enable input. Key electrical parameters include a propagation delay of 12 ns, 20 ns, or 22 ns depending on conditions, a maximum supply current of 19 mA, and output currents of -2.6 mA (high) and 24 mA (low). It functions reliably between 0°C and +70°C.

Comparators Feature Summary

• Octal identity comparison logic for simultaneous 8-bit data verification
• Integrated enable control for selective data path activation
• Totem-pole outputs providing defined high and low states
• Compatible with TTL input levels in the ALS logic family

Comparators Applications

• Digital system data integrity verification
• Memory address matching circuits
• Control logic equality checking
• Peripheral interface status monitoring

Comparators Procurement Notes

Verify the complete part number including the RG4 suffix to ensure compliance with RoHS directives and specific manufacturing revisions. Confirm the SOIC-20 package variant matches your PCB footprint requirements. Check the datasheet for precise timing constraints under your specific load conditions. Ensure voltage levels align with the 4.5 V to 5.5 V operational range. Validate temperature ratings against your environmental specifications.

Comparators Selection Notes

Select this component when eight parallel identity comparisons are required within a single integrated circuit. The ALS technology offers faster switching speeds compared to standard LS logic while maintaining compatible power consumption profiles. Consider the 20-pin SOIC package for surface-mount assembly efficiency. Evaluate the enable pin functionality if conditional data validation is necessary for your design architecture.

Comparators Part Context

This device belongs to the Texas Instruments SN74ALS520 family of octal identity comparators. It is designed for high-speed digital applications requiring precise data matching. The ALS series represents an advanced low-power Schottky implementation, balancing performance and power dissipation. It serves as a specialized logic solution for systems needing multiple simultaneous equality checks without external gating complexity.

Comparators Replacement Considerations

The SN74ALS520DWR is a non-RoHS compliant alternative within the same functional family. Verify pin compatibility and electrical characteristics before substitution. Ensure the replacement supports the required operating temperature range and voltage specifications.