74VHC74M

Overview

The Fairchild Semiconductor MM74VHC74M is a dual D-type flip-flop featuring independent data, preset, clear, and clock inputs with Q and Q outputs. It utilizes advanced silicon-gate CMOS technology to achieve operating speeds comparable to equivalent LS-TTL parts while maintaining low power consumption. The device operates within a wide supply voltage range of 2V to 5.5V. Key electrical parameters include a typical propagation delay of 10ns at 5V with 50pF load, maximum quiescent current of 2µA, and high noise immunity.

Feature Summary

• Advanced silicon-gate CMOS technology for high-speed operation similar to LS-TTL
• Wide power supply range supporting 2V to 5.5V operation
• Independent asynchronous preset and clear controls not synchronized with the clock
• Positive-edge triggered data transfer from input to output

Applications

• High-speed digital signal processing circuits
• Parallel-to-serial data conversion modules
• General-purpose memory storage elements in embedded systems
• Timing and synchronization logic in microcontroller interfaces

Procurement Notes

Verify the manufacturer datasheet for the specific MM74VHC74M part number to confirm pinout compatibility and electrical characteristics against your design requirements. Ensure that the operating temperature range and supply voltage specifications align with your system's environmental conditions before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits requiring dual D-type flip-flops with high switching speeds and low power dissipation. It is suitable for applications needing direct replacement for older LS-TTL designs while benefiting from modern CMOS advantages such as reduced heat generation and broader voltage tolerance.

Part Context

This component belongs to the 74VHC series of high-speed CMOS logic devices manufactured by Fairchild Semiconductor. The VHC series is designed to offer performance levels approaching bipolar technologies while retaining the low-power benefits of standard CMOS. This specific model provides two independent flip-flops in a single package.

Replacement Considerations

Compatible substitutes include MM74HC74M and MM74HCT74M, provided voltage level compatibility is verified. Ensure that the replacement part maintains the same package type and pin configuration to facilitate direct board integration without redesigning the footprint.