74HC597 Shift Register IC – 8-Bit Parallel-In Serial-Out (PISO) with Input Latch in Pakistan

Overview

The 74HC597 is a high-speed CMOS 8-bit shift register with an integrated 8-bit storage register (latch). This makes it superior to the standard 74HC165 for high-speed applications. When you trigger the “Storage Clock,” the IC captures the state of all 8 parallel inputs instantly. You can then shift this data out serially to your microcontroller at your own pace, without worrying about the input pins changing state during the process.

Key Features

• 8-Bit Input Latch: Captures data snapshots so your inputs remain stable during the serial shift process.

• Pin Efficiency: Read 8, 16, or 32 buttons/switches using only 3 or 4 pins on your Arduino or ESP32.

• High-Speed Operation: Capable of high clock frequencies, perfect for fast-scanning keyboards or industrial sensors.

• Daisy-Chain Capable: Connect multiple 597s together to create a massive input matrix for control panels.

• CMOS Reliability: Low power consumption and high noise immunity.

Technical Specifications