CY74FCT646CTSOCT

Overview

The CY74FCT646CTSOCT 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 as a non-inverting circuit. The component is housed in a 24-pin SOIC package and supports surface-mount installation.

Feature Summary

• Integrates eight D-type registers with bus transceiver functionality for simultaneous data capture and transmission.
• Provides three-state outputs to facilitate efficient bus line management and system isolation.
• Ensures signal integrity through TTL-compatible logic levels across the operating temperature range.

Applications

• High-performance memory mapping systems requiring registered data buffering.
• Clocked bus architectures utilizing synchronous data transfer protocols.
• General-purpose parallel data storage and interface circuits in industrial control environments.

Procurement Notes

Verify the specific suffix 'C' against official manufacturer documentation to confirm the exact grade, temperature rating, and packaging configuration. Ensure compatibility with existing board layouts regarding the SOIC-24 footprint and pin assignments. Cross-reference the datasheet for any updates on moisture sensitivity levels or recommended soldering profiles prior to procurement.

Selection Notes

Select this component when an octal register with bidirectional bus capability is required. The FCT series offers CMOS performance with TTL compatibility, suitable for mixed-logic systems. Consider the 9 ns propagation delay and drive strength requirements relative to the target application's speed and load characteristics before finalizing the design choice.

Part Context

This part belongs to the CY74FCT646T family of registered bus transceivers from Texas Instruments. The family is designed for high-speed digital applications requiring reliable data latching and bus driving capabilities. The specific model integrates standard FCT logic characteristics with robust output drivers suitable for driving multiple loads on shared data buses.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify functional equivalence with other octal registered bus transceivers if direct replacement is necessary.