PCA9673 - NXP Semiconductors

PCA9673 Remote 16-bit I/O expander

The PCA9673 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 family. The PCA9673 is a drop in upgrade for the PCF8575 providing higher Fast-mode Plus (Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWM dimming of LEDs, hi.

Features

 1 MHz I2C-bus interface
 Compliant with the I2C-bus Fast and Standard modes
 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 sink capability for directly driving LEDs
 Total package sink capability of 400 mA
 Active LOW open-drain interrupt output
 16 programmable slave addresses using 2 address pins
 Readable device ID (manufacturer, device type, and revision) NXP Semiconductors PCA9673 Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt.