74VHCT374AMTC

Overview

The Fairchild Semiconductor 74VHCT374AMTC is an octal D-type flip-flop with 3-state outputs fabricated using advanced high-speed CMOS technology. It operates within a voltage range of 4.5V to 5.5V and features TTL-compatible inputs, allowing direct interfacing with standard logic families. The device provides symmetrical output drive capabilities with minimum source and sink currents of 8mA. It includes power-down protection on all inputs and outputs to prevent excessive current draw during standby conditions.

Feature Summary

• Octal D-type flip-flop architecture with 3-state outputs for bus-oriented memory operations
• TTL-compatible input thresholds enabling direct interface with 5V TTL systems
• Power-down protection on inputs and outputs to minimize standby current consumption

Applications

• Bus-oriented memory register implementations
• Input/output buffering in high-speed digital systems
• Clock distribution networks requiring tri-state control

Procurement Notes

Verify the specific suffix 'MTC' against the manufacturer's official datasheet to confirm the package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements if applicable to your assembly process. Cross-reference the ordering code with ON Semiconductor or Fairchild documentation to confirm availability and lead times before finalizing procurement plans.

Selection Notes

Select this component when an octal storage element with tri-state capability is required in 5V logic environments. The VHCT series offers speed performance comparable to Schottky TTL while maintaining low CMOS power dissipation. Consider the TSSOP-20 package constraints regarding thermal management and PCB space. Verify that the system clock frequencies remain within the specified maximum operating limits for reliable data capture.

Part Context

This part belongs to the 74VHCT family, which bridges the gap between standard HC logic and faster TTL equivalents. It shares pin compatibility with the 74HC374 but utilizes HCT input thresholds. The device is widely used in general-purpose digital designs where moderate speed and low power are balanced requirements. It represents a mature technology node commonly found in industrial and consumer electronics.

Replacement Considerations

The 74VHCT374A is functionally equivalent across manufacturers such as STMicroelectronics and ON Semiconductor. Verify package dimensions match the TSSOP-20 footprint. Check for any minor variations in propagation delay or supply current specifications between different vendor datasheets.