74HC597N,652

Overview

The NXP USA Inc. 74HC597N,652 is an 8-bit shift register with input flip-flops housed in a DIP16 package (SOT38-4). It comprises an 8-bit storage register feeding a parallel-in, serial-out shift register. Both registers utilize positive edge-triggered clocks. The device operates within a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C.

Feature Summary

• Features direct load and clear inputs for the shift register alongside separate clocking for storage and shift operations.
• Includes input clamp diodes allowing interface to voltages exceeding VCC using current limiting resistors.
• Provides ESD protection exceeding 2000 V under HBM standards and 200 V under MM standards.

Applications

• Parallel-to-serial data conversion
• Serial-to-parallel data expansion
• Input port expansion for microcontrollers

Procurement Notes

Verify the specific suffix '652' against official Nexperia documentation to confirm exact packaging and tape-and-reel specifications. Confirm that the DIP16 variant matches the required lead form and pitch for your PCB footprint. Ensure the HC logic family aligns with your system's CMOS voltage levels rather than TTL requirements.

Selection Notes

Select this component when a dual-register architecture is needed to isolate input data capture from shifting operations. The HC series is appropriate for general-purpose CMOS applications requiring wide voltage flexibility. Consider the HCT variant if strict TTL compatibility at 5V is mandatory. Verify thermal dissipation limits for high-frequency switching scenarios.

Part Context

This part belongs to the 74HC/HCT597 family of 8-bit shift registers with input flip-flops. It is manufactured by Nexperia, which acquired the standard product business from NXP Semiconductors. The datasheet references both NXP and Nexperia branding due to this corporate transition.

Replacement Considerations

The 74HCT597N,652 serves as a TTL-compatible alternative within the same package. Other manufacturers producing JEDEC-compliant 74HC597 devices may offer functional equivalents, provided pinouts and electrical characteristics are verified.