74HCT74D,653

Overview

The 74HCT74D,653 is a dual D-type flip-flop manufactured by Nexperia USA Inc., belonging to the 74HCT logic series. It features positive-edge triggering and includes dedicated Set (preset) and Reset inputs for direct control of output states. The device operates within a supply voltage range of 2V to 6V and supports surface-mount installation in a 14-SOIC package with a width of 3.90mm. It is rated for an operating temperature range of -40°C to 125°C and complies with RoHS3 standards.

Feature Summary

• Dual D-type flip-flops with positive-edge clock triggering
• Independent Set and Reset inputs for asynchronous state control
• Complementary outputs providing both true and inverted signals

Applications

• Data storage and register circuits
• Shift register construction
• Timing and synchronization applications

Procurement Notes

Verify the manufacturer part number 74HCT74D,653 against official Nexperia documentation to confirm the HCT logic family designation and pinout configuration. Ensure the selected component matches the required 14-SOIC package dimensions and electrical specifications for your specific circuit design before procurement.

Selection Notes

Select this component when dual independent D-type flip-flops are required within a single package. The HCT series ensures compatibility with standard TTL logic levels while maintaining CMOS power efficiency. Verify that the positive-edge triggering characteristic aligns with your system's clocking scheme and that the Set/Reset functionality meets your initialization requirements.

Part Context

This component is part of the widely adopted 74HCT series of digital logic integrated circuits. It serves as a fundamental building block for sequential logic designs, offering reliable data storage capabilities. The 74HCT74 variant specifically provides two independent flip-flops, making it suitable for compact designs requiring multiple storage elements without increasing board space significantly.

Replacement Considerations

Public confirmed substitute part numbers include 74HC74D,653 and 74HCT74D,118.