PCA9671 Datasheet - NXP

PCA9671 Remote 16-bit I/O expander

The PCA9671 provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plus (Fm+) family. The PCA9671 is a drop in upgrade for the PCF8575 providing higher I2C-bus speeds (1 MHz versus 400 kHz) so that t.

PCA9671 Features

* 1 MHz I2C-bus interface

* Compliant with the I2C-bus Fast-mode and Standard-mode

* SDA with 30 mA sink capability for 4000 pF buses

* 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os

* 16-bit remote I/O pins that default to inputs at power-up

* Latched outputs with 25 mA s

PCA9671_PhilipsSemiconductors.pdf