74VHCT74ASJ

Overview

The MC74VHCT74ASJ is a dual D-type flip-flop manufactured by onsemi, utilizing advanced VHCT CMOS technology. It operates within a 4.5V to 5.5V supply voltage range and features positive-edge triggering with set and reset functions. The device provides complementary outputs and supports up to 8mA source/sink current. Key electrical parameters include a maximum propagation delay of 8.8ns at 5V with 50pF load, a static current of 2µA, and an input capacitance of 4pF. It is housed in a 14-SOIC package (0.209 inch width) and operates across a temperature range of -40°C to 85°C.

Feature Summary

• Dual D-type flip-flops with positive-edge triggering
• Set and reset functionality for direct control
• Complementary output configuration
• High-speed operation with low propagation delay

Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations
• Timing control logic systems
• General-purpose digital storage applications

Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm the specific suffix 'ASJ' matches the required 14-SOIC package variant. Ensure compliance with RoHS and REACH standards as documented in official datasheets. Request batch-specific test reports if required for quality assurance protocols.

Selection Notes

Select this component when dual independent D-flip-flops are required in a compact surface-mount package. The VHCT series ensures TTL-compatible input thresholds while maintaining CMOS performance. Consider the 8.8ns propagation delay for timing-critical designs. Verify that the 4.5V minimum supply voltage aligns with the system power architecture.

Part Context

This part belongs to the 74VHCT family of high-speed CMOS logic devices from onsemi. The VHCT series bridges the gap between standard CMOS and TTL logic levels, offering improved noise immunity and speed. As a dual flip-flop, it serves as a fundamental building block for sequential logic circuits in industrial and consumer electronics.

Replacement Considerations

SN74AHCT74NSR (Texas Instruments)

FAQ

What is the maximum operating frequency?

The datasheet specifies a clock frequency of 140 MHz.

Does the device support asynchronous reset?

Yes, the MC74VHCT74ASJ includes set and reset functions for direct control of the flip-flop state.