CY74FCT646TSOC

Overview

The CY74FCT646TSOC is an octal registered bus transceiver manufactured by Texas Instruments, belonging to the FCT logic series. It features three-state outputs and operates within a supply voltage range of 4.75 V to 5.25 V. The device provides a propagation delay of 9 ns, with low-level output current capability of 64 mA and high-level output current of -32 mA. Designed for surface mount applications, it is housed in a SOIC-24 package and supports TTL input and output levels across an operating temperature range of -40°C to +85°C.

Feature Summary

• Octal registered bus transceiver architecture with non-inverting polarity
• Three-state outputs for effective bus line isolation and control
• TTL-compatible input and output voltage level specifications
• High drive strength supporting 64 mA low-level and 32 mA high-level currents

Applications

• High-speed data acquisition systems requiring registered buffering
• Clock distribution networks utilizing registered bus architectures
• Memory mapping circuits involving octal data path management
• Industrial control systems operating within extended temperature ranges

Procurement Notes

Verify the specific suffix 'TSOC' against the manufacturer's latest documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with existing PCB footprints for the SOIC-24 form factor. Cross-reference RoHS compliance status directly with official datasheets prior to final procurement decisions.

Selection Notes

Select this component when an octal registered transceiver with three-state outputs is required for bus isolation. The FCT series offers faster switching speeds compared to standard CMOS alternatives. Verify that the system power supply remains strictly within the 4.75 V to 5.25 V window to maintain signal integrity and prevent device damage.

Part Context

This part belongs to the CY74FCT646T family of registered bus transceivers from Texas Instruments. It shares functional similarities with other FCT series devices but is distinct in its octal configuration and specific pinout arrangement. The TSOC suffix denotes the specific surface-mount packaging variant used for automated assembly processes.

Replacement Considerations

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