74FCT521ATQG

Overview

The Renesas Electronics 74FCT521ATQG is an 8-bit identity comparator housed in a QSOP-20 surface-mount package. It performs logic comparison to determine if input A equals input B, providing active-low outputs. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum propagation delay of 6 ns or 7.2 ns depending on conditions. It functions reliably across an industrial temperature range from -40°C to +85°C with a maximum power consumption of 4.5 mA.

Feature Summary

• Performs 8-bit identity comparison between two data inputs
• Provides active-low output signals when inputs are equal
• Supports high-speed digital logic operations with low propagation delay

Applications

• Digital system address matching
• Data bus parity checking
• Memory address decoding

Procurement Notes

Verify the specific package variant and suffix against official Renesas documentation before ordering. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the procurement channel is authorized to guarantee component authenticity and traceability for industrial applications.

Selection Notes

Select this component for designs requiring precise 8-bit equality detection in CMOS logic environments. Consider the QSOP-20 footprint constraints and thermal characteristics during PCB layout. Verify that the operating voltage and temperature ranges align with the target system specifications.

Part Context

This part belongs to the 74FCT series of high-speed CMOS logic devices manufactured by Renesas Electronics. The series is designed for performance-cost efficiency in digital systems. The 74FCT521 specifically addresses identity comparison needs within this family, offering a specialized function distinct from standard gates or flip-flops.

Replacement Considerations

Check for direct pin-compatible substitutes such as IDT74FCT521 variants. Verify electrical parameters and package dimensions match exactly before substitution.