74HC597D,652

Overview

The Nexperia 74HC597D,652 is an 8-bit shift register with input flip-flops. 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 operates within a supply voltage range of 2.0 V to 6.0 V and features clamp diodes on inputs for interfacing with voltages exceeding VCC. It is housed in a 16-lead SO16 plastic small outline package (SOT109-1) and supports operating temperatures from -40 °C to +125 °C.

Feature Summary

• Includes an 8-bit parallel storage register that feeds a serial-out shift register
• Features direct overriding load and clear inputs for the shift register
• Inputs include clamp diodes to enable current limiting resistors for high-voltage interfacing

Applications

• Parallel-to-serial data conversion circuits
• Serial-to-parallel data expansion systems
• Digital signal processing interfaces requiring data buffering

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature range. Confirm RoHS compliance status and check for any recent Product Change Notifications regarding marking or assembly changes. Ensure the component meets the intended environmental specifications before finalizing procurement orders.

Selection Notes

Select this component when an 8-bit shift register with separate storage and shift clocking is required. The 74HC logic family offers wide voltage compatibility and low power dissipation. Verify that the application requires CMOS-level input signals rather than TTL levels, which would necessitate the 74HCT variant instead.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices manufactured by Nexperia. The 74HC597 specifically provides dual-clock functionality for independent control of data latching and shifting operations. It is designed for general-purpose digital logic applications requiring reliable data transfer between parallel and serial domains.

Replacement Considerations

The 74HC597D,653 is a verified substitute part number offering identical electrical characteristics and pinout configuration. Other manufacturers producing equivalent 74HC597 devices may serve as alternatives if functional compatibility is confirmed through datasheet comparison.