DM7474M

Overview

The DM7474M is a dual D-type flip-flop manufactured by Fairchild Semiconductor, part of the 7400 series. It features positive-edge triggering and includes set (preset) and reset functions. The device is housed in a 14-SOIC surface-mount package. It operates within a supply voltage range of 4.75V to 5.25V and supports a maximum clock frequency of 15 MHz. Propagation delay is specified at 40ns under standard conditions.

Feature Summary

• Dual independent D-type flip-flops with positive-edge clock triggering
• Integrated asynchronous set and reset inputs for direct state control
• Complementary outputs available for each flip-flop element

Applications

• Data storage and register implementation
• Shift register construction
• Frequency division circuits

Procurement Notes

Verify component authenticity through authorized channels due to potential availability from multiple manufacturers. Confirm package marking matches the 14-SOIC specification. Check RoHS compliance status as legacy versions may not meet current environmental standards. Validate pinout compatibility if replacing existing designs.

Selection Notes

Select this component when dual edge-triggered storage is required in a compact surface-mount format. Ensure design accommodates the 40ns propagation delay and 15MHz maximum frequency limits. Verify that the 7400 series logic levels match the system interface requirements.

Part Context

This component belongs to the widely adopted 7400 series of digital logic integrated circuits. The DM prefix indicates it was originally produced by Fairchild Semiconductor. The 7474 function code specifically denotes a dual D-type flip-flop configuration, a fundamental building block for sequential logic systems.

Replacement Considerations

• DM74LS74N
• SN74LS74N

FAQ

What type of clock triggering does the DM7474M utilize?

The device utilizes positive-edge triggering, meaning the data input is captured on the rising edge of the clock signal.

Does the DM7474M include control inputs other than data and clock?

Yes, it includes asynchronous set (preset) and reset inputs that can force the output states independently of the clock.