Description
Need more digital outputs from your microcontroller?
The SN74HC595 Shift Register Breakout Board is the perfect solution for expanding IO without sacrificing pins.
This compact board lets you control 8 outputs using only 3 microcontroller pins ideal for LEDs, displays, relays, and more!
Easily chain multiple boards together to scale up your outputs with clean, reliable serial to parallel conversion.
- Model: SN74HC595 Shift Register
- Function: Serial-In, Parallel-Out (SIPO) 8-bit output expander
- Chipset: 74HC595
- Power Supply: 2V – 6V (5V typical)
- Size: 31mm x 19mm – compact & breadboard-friendly
- Header Spacing: Standard 2.54mm (0.1”)
- Chaining Supported: Serial out pin allows easy cascading of multiple boards
- Fully broken-out pins for flexible prototyping and breadboarding
What’s Included:
- 1x SN74HC595 Breakout Board, Pin Headers
Great For:
- Expanding IO pins on Arduino, ESP8266, ESP32, Raspberry Pi, STM32, and other microcontrollers
- Controlling LED arrays, 7-segment displays, relays, and more
- Projects with limited digital outputs
- Prototyping, DIY electronics, and embedded systems development
- Learning digital electronics and shift register logic
Usage Tips:
- Control with just 3 pins: Data (SER), Clock (SRCLK), and Latch (RCLK)
- Chain multiple boards via QH’ (serial out) to create 16, 24, or more outputs
- Use Arduino’s built-in shiftOut() function for easy setup
- Power with 5V logic

