MC74HC597ADG

Shift Registers Overview

The MC74HC597ADG is an 8-bit serial or parallel-input/serial-output shift register with an input latch, manufactured by onsemi using high-performance silicon-gate CMOS technology. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an operating temperature from -55°C to +125°C. The device features push-pull outputs capable of driving 10 LSTTL loads and includes asynchronous active-low reset functionality.

Shift Registers Feature Summary

• Features an 8-bit input latch that feeds parallel data to an 8-bit shift register, allowing flexible data loading via serial or parallel inputs.
• Outputs directly interface with CMOS, NMOS, and TTL logic families without requiring additional buffering components.
• Provides high noise immunity characteristic of CMOS devices and low input current consumption for efficient power usage.

Shift Registers Applications

• Serial-to-parallel data conversion in digital communication systems
• Parallel output expansion for microcontroller I/O ports
• Display driver interfaces requiring sequential data shifting

Shift Registers Procurement Notes

Verify the ordering suffix 'DG' corresponds to the SOIC-16 package (CASE 751B) as specified in the official datasheet ordering information. Confirm RoHS compliance and Pb-Free status through manufacturer documentation. Ensure the component matches the specific marking diagram for the SOIC-16 variant before integration into production designs.

Shift Registers Selection Notes

Select this component when a non-3-state shift register with an integrated input latch is required. Unlike the HC589A, which offers tri-state outputs, the HC597A provides standard push-pull outputs suitable for direct interfacing with standard logic loads. It serves as a pin-compatible alternative to LS597 devices while offering improved CMOS performance characteristics.

Shift Registers Part Context

This part belongs to the MC74HC597A family of high-speed CMOS logic devices. It is functionally identical in pinout to the legacy LS597 but utilizes modern silicon-gate CMOS technology for lower power consumption and higher noise immunity. The 'D' suffix indicates the SOIC-16 package, while 'G' denotes Pb-Free manufacturing compliance.

Shift Registers Replacement Considerations

MC74HC597ADR2G: Same functional device in SOIC-16 tape and reel packaging. MC74HC597ADTR2G: Same functional device in TSSOP-16 tape and reel packaging. Verify package dimensions and lead pitch compatibility during substitution.