74ACT520SJX

Overview

The onsemi 74ACT520SJX is an 8-bit identity comparator integrated circuit belonging to the 74ACT logic family. It features a 20-SOP surface-mount package and operates within a supply voltage range of 4.5 V to 5.5 V. The device functions as a digital comparator, providing outputs that indicate equality between two 8-bit binary inputs. Designed for industrial temperature ranges from -40°C to +85°C, it supports SMD/SMT installation methods. This component is classified under encoders, decoders, multiplexers, and demultiplexers in broader logic IC categorizations.

Feature Summary

• Performs 8-bit digital identity comparison operations
• Compatible with standard 74ACT logic families
• Provides low-active output signals for equality detection

Applications

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

Procurement Notes

Verify current availability status as this component may be discontinued or subject to end-of-life notices. Confirm RoHS compliance details through official manufacturer documentation before integration. Ensure the 20-SOP package dimensions match the target PCB footprint requirements. Cross-reference datasheet revisions to confirm pinout consistency with existing designs.

Selection Notes

Select this component when an 8-bit identity comparison function is required within a 74ACT logic environment. Verify that the operating voltage aligns with the 4.5 V to 5.5 V specification. Consider the SOP-20 package constraints for board space. Evaluate thermal performance within the specified -40°C to +85°C operational range for the intended application environment.

Part Context

This part belongs to the 74ACT series of high-speed CMOS logic devices manufactured by onsemi. It serves as a specialized comparator within the broader logic IC portfolio, distinct from standard gates or flip-flops. The SOP-20 packaging facilitates surface-mount assembly processes. It represents a specific implementation of digital comparison functionality within the company's established logic product line.

Replacement Considerations

Check for direct cross-references from Fairchild Semiconductor, given the historical lineage. Verify compatibility with other 74ACT821 or equivalent 8-bit comparators if substitution is necessary. Confirm pin-to-pin compatibility and electrical parameter alignment with alternative sources.