SN74HCT74DR

Flip Flops Overview

The SN74HCT74DR is a dual D-type positive-edge-triggered flip-flop from Texas Instruments, belonging to the HCT logic series. It features TTL-compatible inputs and CMOS outputs, housed in a 14-pin SOIC package with surface-mount installation. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -40°C to +85°C. Key electrical parameters include a propagation delay of 28 ns, with high-level output current of -4 mA and low-level output current of 4 mA.

Flip Flops Feature Summary

• Dual D-type positive-edge-triggered flip-flops with clear and preset functions
• TTL-compatible inputs ensure compatibility with standard logic families
• CMOS outputs provide robust signal integrity for digital applications

Flip Flops Applications

• Data storage and register circuits
• Shift registers and counters
• Timing and control logic systems

Flip Flops Procurement Notes

Verify the specific suffix 'DR' corresponds to the SOIC-14 surface-mount package configuration. Confirm that the component meets RoHS compliance requirements as indicated in official specifications. Ensure the ordering part number matches the exact manufacturer designation to avoid discrepancies in package type or pinout during integration.

Flip Flops Selection Notes

Select this component when TTL input compatibility is required alongside CMOS output performance. The HCT series is suitable for designs needing standard logic levels at 5V operation. Consider the SOIC-14 package for surface-mount assembly constraints. Evaluate propagation delay characteristics against system timing requirements before finalizing the design choice.

Flip Flops Part Context

This device is part of the SN74HCT74 family, which includes variants such as SN74HCT74N (PDIP) and SN74HCT74NSR (SOIC). These components share identical logical functionality but differ in packaging and mounting styles. The family provides dual flip-flop solutions for general-purpose digital logic applications across various industrial and consumer electronics sectors.

Flip Flops Replacement Considerations

SN74HCT74N offers identical functionality in a PDIP-14 through-hole package. SN74HCT74NSR provides the same logic in an SOIC-14 surface-mount format. Verify pinout compatibility and thermal requirements when substituting between these package types.