TC74VHCT74AFTEL

Overview

The TC74VHCT74AFTEL is a dual D-type flip-flop with positive-edge triggering and three-state outputs, manufactured by Toshiba Semiconductor and Storage. It belongs to the VHCT logic series, utilizing CMOS technology for high-speed operation compatible with TTL levels. The device operates within a supply voltage range of 2.0 V to 5.5 V and supports data rates up to 100 MHz. It features low power consumption and includes input protection circuits allowing 5 V tolerant inputs even at lower supply voltages. The component is housed in a 14-pin TSSOP package suitable for surface-mount applications.

Feature Summary

• Dual D-type flip-flops with positive-edge clock triggering
• Three-state outputs for bus line driving capabilities
• TTL-compatible input levels with 5 V tolerance
• Low power dissipation typical of advanced CMOS technology

Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations
• Buffering and latching digital signals on system buses
• Timing control and synchronization logic stages

Procurement Notes

Verify the specific suffix AFTEL against the manufacturer's current datasheet to confirm pinout compatibility and electrical characteristics. Ensure that the ordering information matches the exact package type and tape-and-reel specifications required for automated assembly processes. Cross-reference RoHS compliance status directly with official documentation prior to procurement.

Selection Notes

Select this component when designing systems requiring dual edge-triggered storage elements with high noise immunity and fast switching speeds. The VHCT series offers superior performance compared to standard HC logic while maintaining backward compatibility with existing TTL interfaces. Consider the operating temperature range and supply voltage requirements to ensure reliable functionality across the intended application environment.

Part Context

This part is a member of the TC74VHCT family, which represents an advanced high-speed CMOS logic series designed by Toshiba. The VHCT series bridges the gap between traditional CMOS and bipolar technologies by providing speed comparable to Schottky TTL while retaining low power advantages. This specific model provides essential sequential logic functions for complex digital designs.

Replacement Considerations

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