74VHCT74AM

Overview

The Fairchild Semiconductor 74VHCT74AM is an advanced high-speed CMOS dual D-type flip-flop fabricated with silicon gate technology. It operates within a voltage range of 4.5 to 5.5 V and achieves a maximum frequency of 160 MHz at 25°C. The device features asynchronous preset (PR) and clear (CLR) inputs independent of the clock signal, providing complementary Q and Q outputs for each flip-flop. It offers high noise immunity with VIH = 2.0 V and VIL = 0.8 V, low power dissipation of 2 µA max, and power-down protection on all inputs and outputs.

Feature Summary

• Dual D-type flip-flops with asynchronous preset and clear functions
• High-speed operation up to 160 MHz at 25°C
• Power-down protection on all inputs and outputs
• Compatible with 74HCT74 pinout and functionality

Applications

• Digital data storage and transfer systems
• Timing and synchronization circuits
• State machine implementations
• Parallel-to-serial conversion modules

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free marking on packaging. Ensure storage conditions adhere to moisture sensitivity level requirements. Validate part markings against official datasheet specifications to prevent counterfeit substitution.

Selection Notes

Select this component when dual edge-triggered storage with independent control signals is required in 5V logic environments. Consider its compatibility with existing 74HCT74 designs for seamless upgrades. Evaluate speed and power constraints against application needs before finalizing selection.

Part Context

Part of the VHCT family offering TTL-compatible input levels with CMOS output characteristics. Designed for high-performance digital applications requiring reliable state retention and fast switching speeds within standard 5V supply rails.

Replacement Considerations

Direct functional substitutes include STMicroelectronics 74VHCT74AM and other manufacturers' equivalents within the same VHCT series. Verify pin compatibility and electrical parameters before substitution.