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PCA8574APW,118
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PCA8574APW,118

Product Overview

Category

The PCA8574APW,118 belongs to the category of I/O expanders.

Use

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

Characteristics

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

Specifications

The PCA8574APW,118 features 8-bit remote I/O port for I2C-bus with interrupt. It operates at a voltage range of 2.3V to 5.5V and has a maximum frequency of 400 kHz.

Detailed Pin Configuration

The PCA8574APW,118 has a total of 20 pins, including power supply, ground, I2C-bus interface, and I/O ports.

Functional Features

  • Remote I/O expansion for I2C-bus
  • 8-bit parallel input/output
  • Polarity Inversion Register to configure the polarity of the I/O ports
  • Interrupt output

Advantages and Disadvantages

Advantages

  • Simplifies I/O expansion in microcontroller-based systems
  • Allows for easy interfacing with various sensors and devices
  • Low power consumption

Disadvantages

  • Limited to 8-bit parallel I/O

Working Principles

The PCA8574APW,118 communicates with the host microcontroller through the I2C-bus interface, allowing the microcontroller to control and monitor the I/O ports remotely.

Detailed Application Field Plans

The PCA8574APW,118 is commonly used in applications such as: - Industrial automation - Home automation - Consumer electronics - IoT devices

Detailed and Complete Alternative Models

Some alternative models to PCA8574APW,118 include: - MCP23008 - PCF8574 - MAX7311

In conclusion, the PCA8574APW,118 is a versatile I/O expander that provides a convenient solution for increasing the number of I/O ports in microcontroller-based systems. Its I2C-bus interface, low power consumption, and remote I/O expansion make it suitable for a wide range of applications in various industries.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av PCA8574APW,118 i tekniska lösningar

  1. What is PCA8574APW,118?

    • PCA8574APW,118 is an I2C-bus controlled 8-bit I/O expander for applications that require additional I/Os.

  2. What is the supply voltage range for PCA8574APW,118?

    • The supply voltage range for PCA8574APW,118 is 2.3 V to 5.5 V.

  3. How many I/O pins does PCA8574APW,118 have?

    • PCA8574APW,118 has 8 I/O pins.

  4. Can PCA8574APW,118 be used with Arduino?

    • Yes, PCA8574APW,118 can be used with Arduino by connecting it via the I2C bus.

  5. What are the typical applications of PCA8574APW,118?

    • Typical applications of PCA8574APW,118 include LED dimming and fan control in automotive systems, relay drivers, and keypad scanning.

  6. What is the maximum sink current per I/O pin for PCA8574APW,118?

    • The maximum sink current per I/O pin for PCA8574APW,118 is 25 mA.

  7. Is PCA8574APW,118 suitable for battery-powered applications?

    • Yes, PCA8574APW,118 is suitable for battery-powered applications due to its low power consumption.

  8. Can PCA8574APW,118 be cascaded to expand the number of I/Os?

    • Yes, PCA8574APW,118 can be cascaded to expand the number of I/Os by connecting multiple devices to the same I2C bus.

  9. What is the operating temperature range for PCA8574APW,118?

    • The operating temperature range for PCA8574APW,118 is -40°C to +125°C.

  10. Does PCA8574APW,118 have built-in ESD protection?

    • Yes, PCA8574APW,118 has built-in ESD protection on all I/O pins.