CY74FCT821CTSOCT

Overview

The CY74FCT821CTSOCT is a 10-bit bus interface flip-flop manufactured by Texas Instruments. It features non-inverting D-type logic with three-state outputs, housed in a 24-pin SOIC package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range from -40°C to +85°C. Key electrical specifications include a propagation delay of 14 ns, high-level output current of -32 mA, low-level output current of 64 mA, and static current of 100 uA.

Feature Summary

• Integrates ten independent D-type flip-flops with positive-edge triggering for data storage.
• Provides three-state outputs to facilitate direct connection to bidirectional buses.
• Utilizes FCT CMOS technology to ensure compatibility with TTL input levels.

Applications

• Parallel data buffering in computer systems
• Bus interface registration for memory modules
• I/O port expansion in embedded controllers

Procurement Notes

Verify the complete part number suffix against the manufacturer's official documentation to confirm specific packaging options such as tape-and-reel quantities or tube configurations. Ensure that the requested variant matches the required industrial temperature rating and RoHS compliance status defined in the latest datasheet revision before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring ten-bit parallel data latching with bus-compatible drive strength. The FCT series ensures seamless integration with existing TTL-based logic families while providing improved switching speeds compared to standard LS logic. Confirm that the system power supply remains stable within the specified 4.75 V to 5.25 V window to maintain timing integrity.

Part Context

This device belongs to the CY74FCT821T series of bus interface registers produced by Texas Instruments. It serves as a digital storage element within the broader FCT logic family, designed to bridge high-speed CMOS logic with traditional TTL interfaces. The component is categorized under flip-flops and is widely used in digital signal processing and data transmission applications.

Replacement Considerations

Compatible substitutes include the CY74FCT821ATSOCT and CY74FCT821CTSOCTE4, provided they match the exact pinout and electrical characteristics. Verify package dimensions and thermal performance when cross-referencing alternative sources to ensure mechanical fit and operational reliability.