TC74VHCT374AFTEL

Overview

The TC74VHCT374AFTEL is an octal D-type flip-flop featuring three-state outputs, manufactured by Toshiba Semiconductor and Storage. It operates within a supply voltage range of 2.0V to 5.5V and supports data rates up to 120MHz. The device utilizes VHCT technology for CMOS compatibility with TTL drive levels. It is housed in a 20-pin TSSOP package with a width of 4.40mm. The component functions as a bus driver/transceiver with true output polarity and includes a clock enable input for data control.

Feature Summary

• Octal D-type flip-flop architecture with three-state outputs
• VHCT technology enabling direct interface with TTL logic devices
• Wide operating voltage range supporting both 2V and 5V systems
• High-speed performance suitable for demanding digital applications

Applications

• Data bus buffering and latching in high-speed digital circuits
• Interface between CMOS and TTL logic families
• Clock distribution networks requiring precise timing control
• Memory address and data register implementations

Procurement Notes

Verify the specific suffix 'TEL' against the manufacturer's official documentation to confirm tape-and-reel packaging specifications and pin configuration. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the part number with Toshiba Semiconductor and Storage catalogs to confirm current production status and availability constraints before finalizing procurement plans.

Selection Notes

Select this component when interfacing high-speed CMOS logic with legacy TTL systems requiring compatible input thresholds. The VHCT series offers improved switching characteristics compared to standard HC/HCT variants. Consider the 20-TSSOP package dimensions for PCB layout constraints. Evaluate the 120MHz maximum frequency against system clock requirements to ensure adequate timing margins for signal integrity.

Part Context

This component belongs to the TC74VHCT series of octal flip-flops designed for high-speed digital applications. It shares functional similarities with other VHCT family members but is distinguished by its specific output drive capabilities and voltage tolerance. The device serves as a critical element in synchronous digital systems where data retention and bus isolation are required.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative vendors such as Nexperia or Texas Instruments only if their datasheets explicitly state pin-to-pin equivalence and electrical parameter matching for the TC74VHCT374AFTEL.

FAQ

What is the maximum operating frequency of the TC74VHCT374AFTEL?

The device supports a maximum clock frequency of 120MHz under specified load conditions.

Does the TC74VHCT374AFTEL support direct connection to TTL inputs?

Yes, the VHCT technology ensures compatibility with standard TTL logic levels, allowing direct interfacing without additional level shifting components.