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PCA9673D from PHILIS,Philips

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PCA9673D

Manufacturer: PHILIS

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

Partnumber Manufacturer Quantity Availability
PCA9673D PHILIS 387 In Stock

Description and Introduction

Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt and reset **Introduction to the PCA9673D by Philips**  

The PCA9673D is a versatile 8-bit I/O expander designed by Philips (now NXP Semiconductors) to enhance system flexibility in microcontroller-based applications. Utilizing the I²C-bus interface, this component allows for easy expansion of digital input/output ports, reducing the need for additional GPIO pins on the host microcontroller.  

Featuring low standby current consumption, the PCA9673D is well-suited for power-sensitive applications. It supports both input and output configurations, with internal pull-up resistors simplifying circuit design. The device operates across a broad voltage range (2.3V to 5.5V), making it compatible with various logic levels.  

A key advantage of the PCA9673D is its interrupt output capability, which alerts the microcontroller to input state changes, minimizing polling overhead. This feature is particularly useful in power-efficient designs. Additionally, its small footprint and robust performance make it ideal for space-constrained applications such as industrial control systems, consumer electronics, and embedded devices.  

With its reliable I²C communication and straightforward integration, the PCA9673D provides an efficient solution for expanding I/O capabilities while maintaining system simplicity. Its combination of low power consumption, flexibility, and ease of use makes it a practical choice for modern electronic designs.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • PCF8575D --: 16-bit I2C I/O expander in the same SO package family, widely used as a functional substitute for PCA9673D in keypad and GPIO expansion applications.
  • TCA9535PWR --: 16-bit I2C/SMBus I/O expander with interrupt output, pin-compatible function and similar register behavior, suitable drop-in replacement with minor firmware adjustment.
  • MCP23017-E/SO --: 16-bit I2C I/O expander in SOIC package with configurable addressing and interrupt support, a common alternative when PCA9673D is unavailable.

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