74HC597D/AUJ

Overview

The 74HC597D/AUJ is an 8-bit shift register with input flip-flops manufactured by NXP USA Inc. It consists of an 8-bit storage register feeding a parallel-in, serial-out 8-bit shift register. Both registers utilize positive edge-triggered clocks. The device features direct load and clear inputs for the shift register. Inputs include clamp diodes to allow interfacing with voltages exceeding VCC using current limiting resistors. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an operating temperature range from -40 °C to +125 °C.

Feature Summary

• CMOS low power dissipation with high noise immunity
• Direct overriding load and clear functions for the shift register
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
• Inputs equipped with clamp diodes for extended voltage interfacing

Applications

• Parallel-to-serial data conversion in digital systems
• Serial-to-parallel data expansion for output devices
• Input buffering and latching in microcontroller interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure the component matches the required JEDEC compliance standards for your application environment. Confirm RoHS status and material declarations if environmental compliance is mandatory for the final product assembly.

Selection Notes

Select this component when an 8-bit shift register with input latching is required. The HC logic family offers wide voltage compatibility suitable for various CMOS systems. Consider the SO16 package dimensions for PCB layout constraints. Verify that the maximum clock frequency and propagation delays meet the timing requirements of the target system design.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices. It is functionally compatible with other 74HC597 variants from different manufacturers adhering to standard logic specifications. The device is produced under Nexperia branding following the separation of NXP's Standard Products division.

Replacement Considerations

Compatible substitutes include 74HCT597D for TTL-level input compatibility and 74HC597PW in TSSOP16 packaging. Verify pinout and electrical characteristics match before substitution.