NXP USA Inc.
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PCA8574APW,112
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PCA8574APW,112

Product Overview

Category

The PCA8574APW,112 belongs to the category of I/O expanders.

Use

It is used to increase the number of I/O pins available to a microcontroller or microprocessor.

Characteristics

  • Package: TSSOP
  • Essence: I2C-bus interface
  • Packaging/Quantity: Tape and Reel (3000 units per reel)

Specifications

The PCA8574APW,112 features 8-bit remote I/O port for I2C-bus with interrupt.

Detailed Pin Configuration

The pin configuration for PCA8574APW,112 is as follows: 1. P0-P7: I/O Ports 2. A0-A2: Address Inputs 3. SDA: Serial Data Line 4. SCL: Serial Clock Line 5. INT: Interrupt Output

Functional Features

  • Remote I/O expansion for I2C-bus
  • 8-bit quasi-bidirectional I/O port
  • High-speed I2C-bus interface (400 kHz)
  • Address by 3 hardware address pins for use of up to 8 devices
  • Interrupt output (active LOW)

Advantages and Disadvantages

Advantages

  • Simplifies I/O expansion of microcontrollers
  • Allows for easy interfacing with multiple devices
  • High-speed I2C-bus interface

Disadvantages

  • Limited to 8-bit I/O port
  • Requires understanding of I2C-bus protocol for effective use

Working Principles

The PCA8574APW,112 operates by providing an 8-bit quasi-bidirectional I/O port that can be controlled through the I2C-bus interface. It allows for seamless integration of additional I/O ports to a microcontroller system.

Detailed Application Field Plans

The PCA8574APW,112 is commonly used in applications such as: - Industrial automation - Consumer electronics - Internet of Things (IoT) devices - Embedded systems

Detailed and Complete Alternative Models

Some alternative models to PCA8574APW,112 include: - MCP23008 - PCF8574 - MAX7311

In conclusion, the PCA8574APW,112 is a versatile I/O expander that provides a convenient solution for increasing the number of I/O pins available to a microcontroller or microprocessor. Its high-speed I2C-bus interface and remote I/O expansion capabilities make it suitable for a wide range of applications in various industries.

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Énumérez 10 questions et réponses courantes liées à l'application de PCA8574APW,112 dans les solutions techniques

  1. What is PCA8574APW,112?

    • PCA8574APW,112 is an I2C-bus controlled 8-bit I/O expander for use in various applications.

  2. What is the operating voltage range of PCA8574APW,112?

    • The operating voltage range of PCA8574APW,112 is from 2.3V to 5.5V.

  3. How many I/O pins does PCA8574APW,112 have?

    • PCA8574APW,112 has 8 I/O pins.

  4. Can PCA8574APW,112 be used to drive LEDs?

    • Yes, PCA8574APW,112 can be used to drive LEDs as it has open-drain output drivers.

  5. What is the maximum sink current per I/O pin of PCA8574APW,112?

    • The maximum sink current per I/O pin of PCA8574APW,112 is 25mA.

  6. Is PCA8574APW,112 suitable for interfacing with a microcontroller?

    • Yes, PCA8574APW,112 is suitable for interfacing with a microcontroller as it uses the I2C-bus interface.

  7. Can PCA8574APW,112 be used in automotive applications?

    • Yes, PCA8574APW,112 is suitable for automotive applications as it is AEC-Q100 qualified.

  8. What are the typical applications of PCA8574APW,112?

    • Typical applications of PCA8574APW,112 include LED displays, push-button interfaces, and GPIO expansion for microcontrollers.

  9. Does PCA8574APW,112 have internal pull-up resistors?

    • Yes, PCA8574APW,112 has internal pull-up resistors that can be individually enabled or disabled.

  10. Is PCA8574APW,112 compatible with 5V microcontrollers?

    • Yes, PCA8574APW,112 is compatible with 5V microcontrollers as it supports a wide operating voltage range.