PCA9671PW,112

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: GPIO Expander
• Characteristics:
  • Low-voltage bidirectional I/Os
  • 8-bit remote I/O port for the I2C-bus
  • Open-drain interrupt output
  • Internal power-on reset
• Package: TSSOP20
• Essence: PCA9671PW,112 is a GPIO expander IC that provides additional input/output pins for microcontrollers or other devices.
• Packaging/Quantity: Comes in a reel packaging with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• I/O Voltage Level: 1.8V to VDD
• Maximum Output Current: ±25mA
• I2C-bus Frequency: Up to 400kHz

Detailed Pin Configuration

The PCA9671PW,112 has a total of 20 pins arranged as follows:

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| | | 1 10 | | 2 11 | | 3 12 | | 4 13 | | 5 14 | | 6 15 | | 7 16 | | 8 17 | | 9 18 | |_______________| ```

Functional Features

• Bidirectional I/Os: The PCA9671PW,112 allows both input and output operations on its I/O pins.
• I2C-bus Interface: It communicates with the microcontroller or host device using the I2C-bus protocol.
• Interrupt Output: The open-drain interrupt output pin can be used to signal events or trigger interrupts.
• Power-On Reset: The internal power-on reset ensures proper initialization of the IC upon power-up.

Advantages and Disadvantages

Advantages: - Provides additional I/O pins for devices with limited GPIOs. - Low-voltage operation allows compatibility with a wide range of systems. - Supports bidirectional communication for versatile applications.

Disadvantages: - Limited maximum output current may restrict use in high-power applications. - Requires an external microcontroller or host device to control and utilize its functionality.

Working Principles

The PCA9671PW,112 is controlled through the I2C-bus interface. It acts as an I/O expander by providing 8 additional input/output pins that can be individually configured as inputs or outputs. The state of each pin can be read or set via the I2C-bus, allowing for flexible control and monitoring of external devices.

Detailed Application Field Plans

The PCA9671PW,112 finds applications in various fields, including but not limited to: - Industrial automation - Consumer electronics - Automotive systems - Internet of Things (IoT) devices - Robotics

Detailed and Complete Alternative Models

Some alternative models to PCA9671PW,112 include: - MCP23017 - PCF8574 - MAX7313 - TCA9539

These alternatives offer similar functionality and can be considered based on specific requirements and system compatibility.

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