CY74FCT646CTSOC

Overview

The CY74FCT646CTSOC is an octal registered bus transceiver manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and features TTL-compatible input and output levels. The device provides three-state outputs with a low-level output current of 64 mA and a high-level output current of -32 mA. It exhibits a propagation delay of 9 ns and functions in non-inverting polarity. The component supports surface mount installation in an SOIC-24 package and operates across a temperature range from -40°C to +85°C.

Feature Summary

• Integrates eight independent registered bus transceivers for parallel data handling
• Provides three-state outputs to facilitate efficient bus line management
• Features TTL-compatible logic levels for direct interface with standard digital systems

Applications

• High-performance register transfer architectures
• Bus-oriented memory and command decoding circuits
• Clock drivers and buffer circuits

Procurement Notes

Verify the specific suffix 'C' against official datasheets to confirm commercial grade temperature ratings and packaging details. Ensure the SOIC-24 footprint matches the target PCB design. Confirm RoHS compliance status through current manufacturer documentation before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring simultaneous latching and bidirectional data transfer on eight-bit buses. The registered nature of the transceiver helps mitigate race conditions during data transitions. Evaluate the 9 ns propagation delay against system timing requirements to ensure signal integrity at intended clock speeds.

Part Context

This part belongs to the Texas Instruments CY74FCT series, which utilizes Fast CMOS technology to deliver high-speed performance with low power consumption. The FCT family is designed to be pin-compatible with earlier bipolar 74F series devices while offering improved electrical characteristics and lower operating voltages suitable for modern digital logic applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.