8-bit I2C-bus and SMBus I/O port with interrupt - # of Addresses: 8 ; I2C-bus: 400 kHz; Interrupt: 0-1 ; Max Sink Current per bit: 25 mA; Max Sink Current, per package: 100 mA; Number of bits: 8 ; Operating temperature: -40~85 Cel; Operating voltage: 2.3~5.5 VDC; Source Current per bit: 10 mA; Weak Pull-Up Current Source: yes; Package: SOT162-1 (SO16); Container: Tube
The PCA9554D,112 can support I2C bus frequencies up to 400 kHz.
The PCA9554D,112 can be configured for input or output mode by writing to the configuration register (register 0x06). A '1' in the corresponding bit position sets the pin as an output, while a '0' sets it as an input.
The PCA9554D,112 can sink or source up to 25 mA per pin.
The PCA9554D,112 can be reset by pulling the RESET pin low for at least 1 ms. This resets all registers to their default values.
The internal pull-up resistors on the PCA9554D,112 are used to pull up the I2C bus lines (SCL and SDA) to the supply voltage (VCC) when the device is not actively driving the bus.
PCA9554D,112 datasheet
by NXP Semiconductors
