SN74HC74DE4

Flip Flops Overview

The SN74HC74DE4 is a dual D-type positive-edge-triggered flip-flop manufactured by Texas Instruments. It features complementary outputs and includes dedicated clear and preset inputs for direct control of the logic state. The device operates within a supply voltage range of 2 V to 6 V and supports propagation delays of up to 15 ns at 6 V with a 50 pF load. It provides output drive currents of 5.2 mA and functions reliably across an industrial temperature range from -40°C to +85°C. Packaged in a 14-pin SOIC (D) surface-mount format, it is designed for high-speed digital applications requiring reliable data storage and synchronization.

Flip Flops Feature Summary

• Dual configuration containing two independent D-type flip-flops within a single package
• Positive-edge triggering mechanism synchronized with clock signal transitions
• Direct asynchronous control via active-low clear and active-high preset inputs
• Complementary outputs providing both true and inverted logic states simultaneously

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations for data expansion
• Digital memory storage elements in microcontroller systems
• Timing and synchronization logic in communication interfaces

Flip Flops Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific packaging options such as tube quantities. Check for recent production change notifications regarding pinout or electrical characteristics. Ensure the ordering suffix matches the required package type and lead time requirements for your assembly schedule.

Flip Flops Selection Notes

Select this component when dual independent storage elements are required in a compact surface-mount footprint. Consider the 2 V to 6 V operating range for compatibility with various logic families. Evaluate the 15 ns propagation delay against system timing constraints. Compare against other 74HC series devices if single-function gates or different trigger types are needed instead of dual flip-flops.

Flip Flops Part Context

This part belongs to the SN74HC family of high-speed CMOS logic devices produced by Texas Instruments. It shares the standard 74HC pinout and electrical characteristics with other members of the series, ensuring interchangeability within compatible designs. The DE4 suffix indicates a specific tape-and-reel or tube packaging variant suitable for automated surface-mount assembly processes.

Flip Flops Replacement Considerations

The SN74HC74DR serves as a direct functional substitute offering identical logic operations and pinout compatibility. Verify that alternative sources maintain the same 14-pin SOIC physical dimensions and electrical specifications to ensure seamless integration without redesigning the PCB layout.