MC74AC74D

Flip Flops Overview

The MC74AC74D is a dual D-type positive edge-triggered flip-flop from the onsemi 74AC logic series. It features asynchronous clear and set inputs, providing independent control over output states regardless of clock signals. The device operates within a supply voltage range of 2V to 6V and supports surface-mount installation in a 14-pin SOIC package. It delivers complementary outputs with source/sink current capabilities of 24mA. The component is designed for operation across an extended temperature range of -40°C to +85°C, ensuring reliability in various digital circuit applications.

Flip Flops Feature Summary

• Dual D-type configuration with positive edge triggering mechanism
• Asynchronous clear and set inputs for immediate state control
• Complementary outputs with high current drive capability
• Wide operating voltage range supporting low-power systems

Flip Flops Applications

• Digital data storage and register circuits
• Timing and synchronization logic modules
• State machine implementation in sequential logic designs
• Data transfer interfaces requiring edge-triggered latching

Flip Flops Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Ensure the ordering code matches the required 14-pin SOIC variant. Cross-reference RoHS compliance status with current environmental declarations. Confirm availability through authorized distribution channels to guarantee genuine components. Validate pinout compatibility with existing PCB footprints before integration.

Flip Flops Selection Notes

Select this component when dual independent D-flip-flops are required within a single package. Consider the 74AC series speed and voltage characteristics for general-purpose digital applications. Evaluate the asynchronous control features if immediate reset or preset functions are necessary without clock dependency. Compare propagation delay specifications against system timing requirements to ensure signal integrity.

Flip Flops Part Context

This part belongs to the widely adopted 74AC logic family, known for CMOS performance with TTL-compatible speeds. The MC74AC74 specifically provides two independent flip-flops, offering a compact solution for multi-bit data handling. It serves as a fundamental building block for sequential logic design, replacing older discrete solutions with integrated reliability.

Flip Flops Replacement Considerations

MC74ACT74DG

Flip Flops FAQ

How do the asynchronous clear and set inputs function?

The clear and set inputs operate independently of the clock signal. A low level on the clear input forces the Q output low, while a low level on the set input forces the Q output high, overriding normal clocked data entry.

What is the trigger mechanism for data transfer?

Data is transferred from the D input to the Q output on the positive edge of the clock pulse. The device samples the input state at the rising transition of the clock signal.