74AC520SC

Overview

The onsemi 74AC520SC is an 8-bit identity logic comparator housed in a 20-pin SOIC package. It performs equality checks where the output indicates if input A equals input B. The device features active-low outputs and operates within a supply voltage range of 2 V to 6 V. Propagation delays are specified at 12 ns and 9 ns. It supports surface-mount installation and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Performs 8-bit identity comparison with active-low output signaling when inputs are equal
• Operates within a wide 2 V to 6 V power supply range for flexible system integration
• Utilizes SOIC-20 surface-mount packaging for compact circuit board design

Applications

• Digital data bus equality verification
• Address matching circuits in memory systems
• Logic state validation in control units

Procurement Notes

Verify component authenticity through authorized channels as this part is discontinued. Confirm RoHS compliance status via official documentation before procurement. Check for process change notifications regarding manufacturing origins. Ensure storage conditions meet humidity sensitivity requirements for lead-free packages. Validate pin compatibility with existing PCB footprints during replacement planning.

Selection Notes

Select this component for applications requiring precise 8-bit digital equality detection. Consider the active-low output polarity when designing interface logic. Evaluate the 2 V to 6 V operating range against system power rails. Assess propagation delay specifications against timing constraints. Verify SOIC-20 package dimensions against available board space.

Part Context

This component belongs to the 74AC series of high-speed CMOS logic devices manufactured by onsemi. It falls under the logic comparators category, specifically designed for identity comparison functions. The device represents a standard solution for digital equality checking in commercial and industrial electronic systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component is discontinued, verify functional equivalence with other 8-bit identity comparators from the same or alternative manufacturers.