74HCT74N,652

Overview

The 74HCT74N,652 is a dual positive edge-triggered D-type flip-flop manufactured by Nexperia. It features individual data (nD), clock (nCP), set (nSD), and reset (nRD) inputs with complementary nQ and nQ outputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40 °C to +125 °C. It utilizes HCT logic levels for TTL compatibility and includes Schmitt-trigger action on the clock input for noise tolerance.

Feature Summary

• Dual positive edge-triggered D-type flip-flops with independent set and reset controls
• Schmitt-trigger action on the clock input ensures high tolerance to slow rise and fall times
• Inputs include clamp diodes allowing interface to voltages exceeding VCC using current limiting resistors

Applications

• Digital signal processing circuits requiring reliable data storage
• Timing and control systems utilizing precise clock synchronization
• Data acquisition systems needing buffered memory elements

Procurement Notes

Verify component authenticity through official Nexperia channels or authorized distributors. Confirm the specific suffix matches the required package and temperature grade. Check for obsolescence status as manufacturing lifecycles may change. Ensure compliance with RoHS directives if applicable to your region. Validate datasheet revisions against your design requirements before procurement.

Selection Notes

Select this component when TTL-compatible inputs are required for CMOS logic families. The wide operating temperature range suits industrial environments. Verify that the dual flip-flop configuration meets space constraints compared to single units. Consider the propagation delay specifications relative to your system clock speed. Ensure power dissipation limits are respected under maximum load conditions.

Part Context

This part belongs to the 74HCT series of high-speed CMOS logic devices. It provides backward compatibility with standard TTL logic levels while offering improved performance characteristics. The N,652 suffix indicates a specific PDIP-14 through-hole package variant produced by Nexperia following the separation from NXP Semiconductors.

Replacement Considerations

Direct substitutes include other 74HCT74 variants from manufacturers like Texas Instruments or ON Semiconductor. Verify pinout compatibility and electrical parameters such as propagation delay and output drive current. Ensure the replacement supports the same voltage and temperature ranges.