SN74HC74PWR

Flip Flops Overview

The SN74HC74PWR is a dual D-type flip-flop from the Texas Instruments HC logic family, housed in a TSSOP-14 surface-mount package. It operates within a supply voltage range of 2 V to 6 V and supports a minimum high-level output current of -5.2 mA alongside a maximum low-level output current of 5.2 mA. The device features a propagation delay of 175 ns and functions across an extended temperature range from -40°C to +125°C.

Flip Flops Feature Summary

• Integrates two independent D-type positive-edge-triggered flip-flops with complementary outputs within a single compact package.
• Includes dedicated asynchronous preset and clear inputs for immediate state control independent of clock signals.
• Provides CMOS-compatible input and output characteristics suitable for interfacing with various digital logic systems.

Flip Flops Applications

• Data storage and register applications requiring parallel-to-serial conversion or temporary data holding.
• Sequential logic circuits utilizing edge-triggered state transitions for timing and control operations.
• Automotive electronic systems requiring robust logic components compliant with AEC-Q100 qualification standards.

Flip Flops Procurement Notes

Verify that the specific part number matches the required automotive qualification status, as standard and qualified variants may differ in reliability specifications. Confirm the package type corresponds to the intended PCB footprint and soldering process requirements. Ensure the operating voltage range aligns with the system power supply design to maintain signal integrity and prevent latch-up conditions during operation.

Flip Flops Selection Notes

Select this component when a dual D-type flip-flop solution is required with wide voltage tolerance and industrial temperature resilience. Consider the propagation delay characteristics against the system clock speed to ensure timing margins are met. Evaluate the TSSOP-14 package dimensions against available board space and thermal dissipation needs compared to alternative packages like SOIC or DIP.

Flip Flops Part Context

This device belongs to the SN74HC series, representing high-speed CMOS logic technology known for compatibility with standard TTL levels. The PWR suffix indicates a plastic small-outline package with gull-wing leads, designed for automated surface-mount assembly processes. It serves as a fundamental building block for sequential circuit design in consumer, industrial, and automotive electronics.

Flip Flops FAQ

Does the SN74HC74PWR include asynchronous control inputs?

Yes, each flip-flop includes dedicated asynchronous preset and clear inputs that allow immediate setting or resetting of the output state regardless of the clock signal.

What is the triggering mechanism for the flip-flops?

The flip-flops are triggered on the positive edge of the clock signal, meaning the output state changes based on the D input level at the moment the clock transitions from low to high.