SN74AHC74D

Flip Flops Overview

The SN74AHC74D is a dual positive-edge-triggered D-type flip-flop manufactured by Texas Instruments. It features independent clear and preset inputs for direct control of the output state. The device operates within a supply voltage range of 2 V to 5.5 V, ensuring compatibility with various logic families. It utilizes CMOS technology to achieve low static power consumption while providing high-speed performance. The component is housed in a 14-pin SOIC package, suitable for surface-mount applications. Key electrical characteristics include a propagation delay of approximately 9.3 ns at 5 V and output drive currents of ±8 mA. It supports operating temperatures from -55°C to +125°C.

Flip Flops Feature Summary

• Dual positive-edge-triggered D-type flip-flops with independent clear and preset functions
• Wide operating supply voltage range from 2 V to 5.5 V
• High-speed operation with low propagation delay
• Low static power consumption due to CMOS construction

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Shift registers and register arrays
• Timing delay elements in digital systems
• Data storage and buffering applications

Flip Flops Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-14 package when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the ordering part number matches the required temperature grade and packaging format. Cross-reference the datasheet revision date to ensure access to the most current electrical specifications and pinout information before finalizing procurement.

Flip Flops Selection Notes

Select this component for designs requiring dual edge-triggered storage with direct set/reset capabilities. The wide voltage range allows integration into both 3.3 V and 5 V systems. Consider the SOIC package size for PCB space constraints. Verify that the input voltage levels are compatible with the driving logic family to ensure reliable switching. Evaluate the propagation delay against system timing requirements to confirm adequate speed for the intended application frequency.

Flip Flops Part Context

The SN74AHC74 belongs to the AHC (Advanced High-Speed CMOS) logic series, offering improved performance over standard HC devices. It is part of the broader SNx4AHC74 family, which includes variants with different packages and automotive qualifications. This specific part represents the commercial-grade version in a standard industrial temperature range. It serves as a fundamental building block for sequential logic design in general-purpose digital electronics.

Flip Flops Replacement Considerations

SN74AHC74DR: Identical function in tape-and-reel packaging for automated assembly. SN74AHC74N: Equivalent functionality in a DIP-14 package for through-hole applications. SN74AHCT74: Compatible alternative with TTL-compatible input thresholds if necessary.