74AC520SCX

Overview

The onsemi 74AC520SCX is an 8-bit identity comparator integrated circuit manufactured using high-speed CMOS technology. It operates within a supply voltage range of 2 V to 6 V and features active-low outputs that indicate equality between two 8-bit inputs. The device is housed in a 20-pin SOIC package and supports surface-mount installation. Propagation delays are specified at 12 ns and 9 ns under standard conditions. It functions reliably across an industrial temperature range from -40°C to +85°C, providing robust digital comparison capabilities for logic applications.

Feature Summary

• Performs 8-bit identity comparison with active-low output signaling when input values are equal
• Utilizes high-speed CMOS technology for efficient operation within a wide voltage range
• Designed for surface-mount integration into compact electronic assemblies

Applications

• Digital data bus monitoring systems
• Address decoding circuits
• Data validation logic blocks

Procurement Notes

Verify the specific suffix against official datasheets to confirm package and electrical tolerances. Confirm availability status as distribution channels may list discontinued or limited stock items. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.

Selection Notes

Select this component when an 8-bit equality check is required with low output drive characteristics. Consider the 2V to 6V operating range for flexibility in various logic families. Evaluate propagation delay specifications against system timing constraints to ensure signal integrity is maintained during high-speed data transfers.

Part Context

This part belongs to the 74AC series of logic comparators, designed for general-purpose digital applications. It complements other onsemi logic devices by providing precise identity checking functionality. The SOIC-20 packaging allows for easy integration into standard printed circuit board layouts used in consumer and industrial electronics.

Replacement Considerations

Check for direct pin-compatible substitutes within the same logic family. Verify equivalent electrical parameters such as voltage range and propagation delay. Ensure any replacement maintains the active-low output configuration and 8-bit width requirements.