74FCT521ZCTSO

Overview

The IDT 74FCT521ZCTSO is an 8-bit identity comparator integrated circuit manufactured using fast complementary metal-oxide-semiconductor (CMOS) technology. It functions as a magnitude comparator with bit output, designed for high-speed digital logic applications. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum operating frequency of 166.7 MHz at nominal supply conditions. It features true output polarity and is packaged in a surface-mount configuration.

Feature Summary

• Implements 8-bit identity comparison using fast CMOS technology
• Provides individual bit-level magnitude comparison outputs
• Supports high-frequency operation up to 166.7 MHz

Applications

• Digital data bus comparison circuits
• Address decoding systems
• Data validation logic modules

Procurement Notes

Verify the specific suffix ZCTSO against manufacturer documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with 5V logic families when integrating into existing designs. Confirm RoHS compliance status through official datasheets prior to procurement.

Selection Notes

Select this component for applications requiring precise 8-bit equality checking with minimal propagation delay. Consider the surface-mount package constraints during PCB layout. Verify that the 166.7 MHz speed rating meets system timing requirements without additional buffering.

Part Context

This part belongs to the FCT logic family from Integrated Device Technology, known for high-speed performance. It serves as a specialized comparator within the broader logic IC portfolio, distinct from standard bus drivers or registers found in similar pin-count packages.

Replacement Considerations

Cross-reference with other 8-bit identity comparators in the FCT series. Verify pinout compatibility and electrical characteristics before substituting with equivalent parts from other manufacturers.