74HC595 Shift Register IC – 8-Bit Serial-In Parallel-Out (SIPO) with Latch

Overview

The 74HC595 is an 8-bit serial-in, parallel-out shift register that includes a storage register (latch). This IC is the “magic wand” of microcontrollers; it allows you to control 8 digital outputs using only 3 pins on your Arduino, ESP32, or Raspberry Pi. Because it features a dedicated latch pin, the outputs only update when you tell them to, preventing the “ghosting” or flickering often seen with simpler shift registers.

Key Features

• 3-Pin Magic: Control 8 individual LEDs or components using just three GPIO pins (Data, Clock, and Latch).

• Flicker-Free Output: The internal latch holds the output state steady while new data is being shifted in.

• Infinite Expansion: You can “daisy-chain” multiple 74HC595 ICs together. Two chips give you 16 outputs, three give you 24, and so on—all still using only 3 pins!

• High-Speed CMOS: Low power consumption with high-speed switching capability.

• Breadboard Friendly: Classic DIP-16 package fits perfectly into breadboards and standard IC sockets.

Technical Specifications