PCF8575 IO Expander Module

This Module is a simple breakout board for this easy to use expander IC. This PCF8575 module allows the user to expand up to 16 I/O using only two I/O for control.

 PCF8575 IO Expander Module Specifications:

• Working voltage: 2.5 - 5.5VDC
• Working current: 100mA(MAX)
• I2C address: 0x20(default),can be modified by soldering A1 and A2 selection pads.
• 16 individually addressable pins.
• Each pin configurable for input or output.
• Open-drain interrupt output pin for input change interrupt.
• Great for Arduino UNO R3 and other MCU to control simple relay, buzzer, button, led.

Datasheet:

http://www.ti.com/lit/ds/symlink/pcf8575.pdf