CD74HC597M – HARRIS

Overview

The Texas Instruments CD74HC597M is an advanced 8-bit serial-in, parallel-out shift register designed for efficient data acquisition and distribution in digital systems. Its key operational characteristic is the ability to capture parallel data and serially shift it out, enabling multiplexing of data streams or expansion of microcontroller I/O. A critical design consideration when implementing the CD74HC597M is managing the trade-off between clock frequency and output drive strength; while capable of high-speed operation, excessive capacitive loading on the outputs can degrade signal integrity and necessitate careful PCB layout and buffer selection to maintain reliable data transfer.

Key Features

• 8-bit parallel input, serial output
• Push-Pull output type
• Wide operating voltage: 2V to 6V
• High noise immunity characteristic of HC logic
• Extended temperature range: -55°C to 125°C
• 16-SOIC (0.154″, 3.90mm Width) surface mount package

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Serial expansion of microcontroller output ports for LED driving or relay control
• Data buffering and temporary storage in industrial automation control systems
• Interfacing with serial peripheral devices requiring parallel data capture
• Signal conditioning and data serialization in embedded control applications