I/O expander 8-ch I2C

Module for adding inputs and outputs to a microcontroller. The module communicates via I2C, so only 4 wires are used (VCC, GND, SDA, SCL). Female and male headers on the card edges are used for the I2C interface and several boards can be chained. Up to eight boards can be chained this way for a total of 64 additional I/Os. Jumpers are used for setting the I2C address.

* Controller: NXP PCF8574
* Interface: I2C 100kHz
* Drive strength: 80mA (package) / 10mA (per port)
* Voltage levels: 2.5 - 6V
* Dimensions: 48.25 x 15.75 x 11.6mm