PCF8574PWG4

Product Overview

• Category: Integrated Circuit
• Use: I/O Expander
• Characteristics: 8-bit remote I/O expander for I2C-bus with interrupt
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The PCF8574PWG4 is a remote 8-bit I/O expander for the I2C bus. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 2.5V to 6V
• I/O Voltage: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• I2C Address Range: 0x20 to 0x27

Detailed Pin Configuration

The PCF8574PWG4 has a total of 16 pins, including power supply, ground, I2C bus connections, and 8 I/O ports.

Functional Features

• 8-bit remote I/O expander for the I2C-bus
• Open-drain interrupt output
• Low standby current consumption

Advantages and Disadvantages

Advantages

• Simplifies I/O expansion of microcontrollers
• Low power consumption
• Interrupt capability for efficient communication

Disadvantages

• Limited to 8 I/O ports
• Requires I2C bus for communication

Working Principles

The PCF8574PWG4 acts as an I/O expander by providing additional digital input/output pins to a microcontroller through the I2C bus. It allows the microcontroller to control and monitor external devices without using additional GPIO pins.

Detailed Application Field Plans

The PCF8574PWG4 is widely used in applications requiring additional I/O ports, such as: - Industrial automation - Home automation - IoT (Internet of Things) devices - Robotics

Detailed and Complete Alternative Models

Some alternative models to the PCF8574PWG4 include: - MCP23008 - MCP23S08 - MAX7311

In conclusion, the PCF8574PWG4 is a versatile I/O expander that offers a cost-effective solution for expanding the I/O capabilities of microcontrollers. Its low power consumption and interrupt capability make it suitable for various applications in the field of embedded systems and automation.

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