74VHCT374AMX

Overview

The Fairchild Semiconductor 74VHCT374AMX is an octal D-type flip-flop with 3-state outputs, fabricated using advanced CMOS technology. It operates within a voltage range of 4.5V to 5.5V and features low power dissipation with a maximum ICC of 4 µA at 25°C. The device provides symmetrical output impedance with minimum IOH and IOL of 8 mA. It includes power-down protection on inputs and outputs, ensuring latch-up immunity. The component is housed in a 20-lead TSSOP package.

Feature Summary

• Octal D-type flip-flop architecture with non-inverting 3-state outputs
• Advanced high-speed CMOS fabrication for balanced propagation delays
• Power-down protection integrated on all input and output pins

Applications

• High-speed data bus buffering applications
• Registering and latching digital signals in logic circuits
• Interface modules requiring TTL-compatible output levels

Procurement Notes

Verify the specific suffix 'AMX' against official Fairchild or ON Semiconductor documentation to confirm exact tape-and-reel packaging specifications and moisture sensitivity level ratings. Ensure the ordering part number matches the required lead-free and RoHS compliance status as defined in the manufacturer's current product change notices following the Fairchild integration.

Selection Notes

Select this component when designing systems requiring octal storage elements with high drive capability and low static power consumption. The VHCT series ensures compatibility with standard TTL input thresholds while maintaining CMOS noise immunity. Confirm that the 20-lead TSSOP package dimensions align with the target PCB footprint and thermal management requirements for the intended operating environment.

Part Context

This component belongs to the 74VHCT family, which bridges the performance gap between standard HC logic and bipolar Schottky TTL speeds while retaining CMOS power advantages. The 74VHCT374 variant specifically provides eight independent D-type flip-flops, making it suitable for parallel data handling tasks in microprocessor-based systems and communication interfaces.

Replacement Considerations

Public confirmed substitute part numbers include MC74VHCT374ADWR2G and MC74VHCT374ADWRG from onsemi. These equivalents offer parameter equivalence and function compatibility for direct replacement in existing designs.