CY74FCT823ATSOCT

Overview

The CY74FCT823ATSOCT is a single-element, 9-bit D-type flip-flop manufactured by Texas Instruments. It operates within a supply voltage range of 4.75V to 5.25V and features positive-edge triggering with a main reset function. The device utilizes a 24-SOIC surface-mount package and supports TTL input levels. Key electrical specifications include a maximum propagation delay of 20ns at 5V with 300pF load, high-level output current of 32mA, low-level output current of 64mA, and static current of 200µA. It functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides 9-bit data storage via positive-edge triggered D-type flip-flops
• Includes a main reset function for synchronous control
• Features three-state non-inverting outputs for bus driving applications

Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations in digital systems
• Data buffering and temporary storage in microprocessor interfaces

Procurement Notes

Verify component status as the CY74FCT823ATSOCT is listed as obsolete or end-of-life by the manufacturer. Confirm availability through authorized distributors or secondary market suppliers such as Rochester Electronics. Ensure that any substitute components maintain pin compatibility and electrical specifications to guarantee system integrity during procurement.

Selection Notes

Select this component when a 9-bit registered buffer or shift register is required in designs utilizing the FCT logic family. Consider the 24-SOIC package constraints and the specific 20ns propagation delay limit under capacitive loads. Evaluate the need for the integrated main reset feature against alternative solutions if higher speed or different bit widths are necessary for the target application.

Part Context

This part belongs to the Texas Instruments CY74FCT series, which combines CMOS density with fast switching speeds comparable to LS-TTL. The 74FCT823 specifically addresses applications requiring multi-bit storage with synchronous reset capabilities. It is designed for high-performance digital systems where reliable data latching and bus isolation are critical requirements.

Replacement Considerations

Public confirmed substitute part numbers: None identified.