The CAT9555 IO Expansion Module specifically provides 16−bit parallel input/output port expansion for I2C and SMBus compatible applications.
These I/O expanders provide a simple solution in applications where additional I/Os are needed: sensors, power switches, LEDs, buttons, and fans.
In order to be convenient for users, we provide the demo codes based on Raspberry Pi, Ardui. UNO and STM32.
Number of I/O PORTS: 16
Control Chip: CAT9555
Signal Interface: I2C
Supply Voltage: 3.3V/5V
1. CAT9555 IO Expansion Module x1 2. PH2.0 20cm 5Pin x1
Please feel free to contact us via Amazon message if you have any problem.
5V tolerant I/O, high drive capability of I/O ports
400 kHz I2C bus compatible
Polarity inversion register, active low interrupt output
Internal power−on reset
Low stand−by current