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PCA9673D Datasheet Remote 16-bit I/O expander

Manufacturer: NXP Semiconductors

Download the PCA9673D datasheet PDF. This datasheet also includes the PCA9673 variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (PCA9673_NXPSemiconductors.pdf) that lists specifications for multiple related part numbers.

General Description

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, higher I2C-bus drive (30 mA versus 3 mA) so that many more devices can be on the bus without the need for bus buffers, higher total package sink capacity (400 mA versus 100 mA) that supports having all 25 mA LEDs on at the same time and more device addresses (16 versus 8) are available to allow many more devices on the bus without address conflicts.

The difference between the PCA9673 and the PCF8575 is that the A2 address pin is replaced by a RESET input on the PCA9673.

Overview

PCA9673 Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt and reset Rev.

2 — 29 September 2011 Product data sheet 1.

Key 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.
  • Readabl.

📁 Similar Datasheet

Brand Logo Part Number Description Manufacturer
NXP Semiconductors Logo PCA9673 Remote 16-bit I/O expander NXP Semiconductors

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