CY74FCT646CTQCT

Overview

The CY74FCT646CTQCT is an octal registered bus transceiver manufactured by Texas Instruments. It features non-inverting logic with one element containing eight bits per element. The device provides three-state outputs and operates within a supply voltage range of 4.75V to 5.25V. It supports TTL input and output levels, delivering a high-level output current of 32mA and a low-level output current of 64mA. The component is housed in a 24-SSOP package and functions as a registered transceiver.

Feature Summary

• Octal registered bus transceiver architecture
• Three-state output capability
• Non-inverting logic polarity

Applications

• Bus-oriented memory and register implementations
• Clocking data registers
• Buffer and line drivers

Procurement Notes

Verify the specific suffix 'C' against official datasheets to confirm package and temperature grade specifications. Confirm end-of-life status with the manufacturer or authorized distributors before finalizing procurement plans. Ensure compatibility with existing PCB footprints for the 24-SSOP form factor during replacement evaluation.

Selection Notes

Select this component for designs requiring octal data storage and bidirectional bus driving. The registered nature allows for clocked data transfer, suitable for synchronous systems. Verify that the 4.75V to 5.25V operating range aligns with the system power supply. Ensure the 24-SSOP package dimensions fit the available board space constraints.

Part Context

This part belongs to the 74FCT logic family, which combines CMOS density with TTL-compatible speeds. The CY74FCT646 series specifically addresses applications needing registered bus transceivers. Texas Instruments produces this series for industrial and commercial electronic systems requiring reliable data buffering and storage on shared buses.

Replacement Considerations

CY74FCT646ATQCT is a confirmed substitute part number.