PCA8575DB

The PCA8575DB is a remote 16-bit I/O Expander for I?C-bus with interrupt and provides general purpose remote I/O expansion for most microcontroller families via the two-line bi-directional I?C-bus (serial clock (SCL), serial data (SDA)). The device consists of a 16-bit quasi-bi-directional port and an I?C-bus interface. The expander has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs. It also possesses an interrupt line (INT) which can be connected to the interrupt logic of the microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I?C-bus. The Internal power-ON reset initializes the I/Os as inputs.