MC74ACT74DT

Flip Flops Overview

The MC74ACT74DT is a dual D-type positive edge-triggered flip-flop manufactured by onsemi (formerly Motorola). It operates within a supply voltage range of 4.5 V to 5.5 V and features asynchronous clear and set inputs with complementary outputs. The device utilizes CMOS technology, offering a propagation delay of 11 ns and output drive currents of ±24 mA. It is housed in a 14-pin SOIC package and supports an operating temperature range from -40°C to +85°C.

Flip Flops Feature Summary

• Dual D-type configuration with positive edge triggering mechanism
• Asynchronous clear and set inputs for immediate state control
• Complementary Q and Q-bar outputs for versatile logic interfacing
• TTL-compatible input thresholds for system integration

Flip Flops Applications

• Parallel data storage registers
• Shift register construction
• Frequency division circuits
• Digital signal processing timing control

Flip Flops Procurement Notes

Verify the manufacturer marking on the component body to distinguish between original Motorola legacy parts and current onsemi production, as both share the same part number designation. Confirm the package variant matches the required SOIC-14 footprint. Ensure the specific revision level aligns with your design's electrical specifications. Cross-reference the datasheet version date to confirm compliance with current environmental standards such as RoHS directives before finalizing procurement orders.

Flip Flops Selection Notes

Select this component when a dual D-type flip-flop with asynchronous control is required for 5V logic systems. The ACT series offers faster switching speeds compared to standard AC or HC families while maintaining TTL compatibility. Consider the ±24 mA output drive capability for direct interface with moderate loads. The wide operating temperature range makes it suitable for industrial applications where thermal stability is critical for reliable digital state retention.

Flip Flops Part Context

This component belongs to the 74ACT logic family, which bridges the performance gap between older TTL standards and modern CMOS technologies. Originally developed by Motorola, this line is now maintained by onsemi. The MC74ACT74DT specifically provides two independent flip-flops in a single package, serving as a fundamental building block for sequential logic circuits in embedded systems and general-purpose digital electronics.

Flip Flops Replacement Considerations

MC74ACT74D

Flip Flops FAQ

How does the asynchronous clear input affect the output?

When the clear input is held low, the Q output is forced to a low state regardless of the clock or data inputs.

What triggers the data transfer in this device?

Data is transferred from the D input to the Q output on the positive-going edge of the clock pulse.