74HCT174D,653

Overview

The 74HCT174D,653 is a hex D-type flip-flop manufactured by Nexperia USA Inc., designed for high-speed digital logic applications. It features six independent D-type flip-flops with positive-edge triggering and an asynchronous reset input. The device operates within a supply voltage range of 4.5V to 5.5V, ensuring compatibility with standard HCT logic families. Packaged in a 16-SOIC surface-mount case measuring 0.154 inches (3.90mm) wide, it supports a wide operating temperature range from -40°C to 125°C. This component is suitable for data storage, shift registers, and timing circuits requiring robust performance under industrial conditions.

Feature Summary

• Hex configuration providing six independent D-type flip-flops within a single package
• Positive-edge clock triggering mechanism for precise data capture synchronization
• Asynchronous reset function allowing immediate clearing of all outputs regardless of clock state
• Industrial-grade thermal stability supporting operation across extended temperature ranges

Applications

• Data storage and latching circuits in digital systems
• Shift register implementations for serial-to-parallel conversion
• Timing and control logic in microprocessor-based interfaces
• State machine implementation in embedded controller designs

Procurement Notes

Verify the specific suffix 653 against the manufacturer's latest documentation to confirm packaging details and marking codes. Ensure that the 16-SOIC footprint matches the target PCB layout dimensions. Confirm RoHS3 compliance status if environmental regulations apply to the final assembly. Cross-reference the active part status with current distributor listings to avoid obsolete stock procurement errors.

Selection Notes

Select this component when a hex D-type flip-flop with asynchronous reset is required for HCT-compatible logic levels. The 16-SOIC package offers a compact solution for space-constrained surface-mount designs. Consider the positive-edge trigger characteristic for synchronous system architectures. Evaluate the -40°C to 125°C operating range against the environmental demands of the intended application environment.

Part Context

This device belongs to the 74HCT series, which bridges TTL and CMOS logic families. It provides the switching speed of HC logic with the noise immunity and input characteristics of HCT standards. The 74HCT174 variant specifically focuses on hex flip-flop functionality, distinguishing it from counter or register variants within the same logical family tree.

Replacement Considerations

• CD74HCT174M (Texas Instruments)

FAQ

What is the trigger type for the 74HCT174D,653?

The device utilizes a positive-edge trigger mechanism for clocking data into the flip-flops.

Does the 74HCT174D,653 include a reset function?

Yes, it features an asynchronous reset input that clears all outputs independently of the clock signal.