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PCA9675D Datasheet Remote 16-bit I/o Expander

Manufacturer: NXP Semiconductors

Overview: PCA9675 Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt Rev. 2 — 3 October 2011 Product data sheet 1.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The PCA9675 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 PCA9675 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 (64 versus 8) are available to allow many more devices on the bus without address conflicts.

The device consists of a 16-bit quasi-bidirectional port and an I2C-bus interface.

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.
  • 64 programmable slave addresses using 3 address pins.
  • Readabl.

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Similar Datasheet

Brand Logo Part Number Description Manufacturer
NXP Semiconductors Logo PCA9675 Remote 16-bit I/O expander NXP Semiconductors

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