The PCF8574 IO Expansion Board is used as remote 8-bit I/O expander for I2C-bus. Up to 8 PCF8574 IO Expansion Board can be connected to the I2C-bus, providing up to 64 I/O ports.
The PCF8574 IO Expansion Board features an I2C pin header on one side and an I2C connector on the opposite side. Hence, connecting the board to your development system is more flexible. The board also supports I2C cascading, allowing the use of multi modules connected to the I2C bus at the same time by connecting the pin header and connector.
Features
PCF8574, I2C interface, 8-bit parallel port
