Texas Instruments
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PCA9534APWG4
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PCA9534APWG4

Product Overview

Category

The PCA9534APWG4 belongs to the category of I/O expanders.

Use

It is used to provide a simple solution when additional I/Os are needed for a microcontroller.

Characteristics

  • Low standby current
  • 400 kHz I2C-bus interface
  • Operating power supply voltage range of 2.3 V to 5.5 V
  • Open-drain interrupt output
  • Polarity inversion register

Package

The PCA9534APWG4 comes in a TSSOP package.

Essence

The essence of the PCA9534APWG4 lies in its ability to expand the I/O capabilities of a microcontroller without consuming excessive power.

Packaging/Quantity

The PCA9534APWG4 is typically available in reels with a quantity of 2500 units per reel.

Specifications

  • Number of I/Os: 8
  • Input Voltage Range: 0 V to 5.5 V
  • Output Voltage Range: 0 V to 5.5 V
  • Operating Temperature Range: -40°C to +85°C
  • Standby Current: 1 µA

Detailed Pin Configuration

The PCA9534APWG4 has a total of 16 pins, with each pin serving a specific function related to input or output.

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | P0 | I/O | | 2 | P1 | I/O | | 3 | P2 | I/O | | 4 | P3 | I/O | | 5 | P4 | I/O | | 6 | P5 | I/O | | 7 | P6 | I/O | | 8 | P7 | I/O | | 9 | GND | Ground | | 10 | A0 | Address | | 11 | A1 | Address | | 12 | A2 | Address | | 13 | SDA | I2C Data | | 14 | SCL | I2C Clock | | 15 | INT | Interrupt| | 16 | VCC | Power |

Functional Features

  • I2C-bus interface allows for easy communication with microcontrollers
  • Low standby current minimizes power consumption
  • Open-drain interrupt output for efficient event notification
  • Polarity inversion register simplifies interfacing with different logic levels

Advantages and Disadvantages

Advantages

  • Low power consumption
  • Simplified I/O expansion
  • Easy integration with microcontrollers

Disadvantages

  • Limited number of I/Os (8)

Working Principles

The PCA9534APWG4 operates by receiving commands and data from a microcontroller through the I2C-bus interface. It then processes these commands to control the input and output states of its I/O pins. The device also monitors the input states and generates interrupts when certain conditions are met.

Detailed Application Field Plans

The PCA9534APWG4 finds applications in various fields such as: - Industrial automation - Consumer electronics - Automotive systems - Internet of Things (IoT) devices - Robotics

Detailed and Complete Alternative Models

Some alternative models to the PCA9534APWG4 include: - MCP23008 - MAX7311 - PCF8574

In conclusion, the PCA9534APWG4 is a versatile I/O expander that offers low power consumption and simplified integration with microcontrollers. Its compact package and functional features make it suitable for a wide range of applications across different industries.

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แสดงรายการคำถามและคำตอบทั่วไป 10 ข้อที่เกี่ยวข้องกับการใช้ PCA9534APWG4 ในโซลูชันทางเทคนิค

  1. What is PCA9534APWG4?

    • PCA9534APWG4 is a 8-bit I2C-bus and SMBus I/O port with interrupt and reset.

  2. What are the key features of PCA9534APWG4?

    • The key features include 8-bit remote I/O expander for I2C-bus/SMBus, low standby current, open-drain interrupt output, active-low reset input, and more.

  3. How can PCA9534APWG4 be used in technical solutions?

    • PCA9534APWG4 can be used to provide remote I/O expansion for microcontroller (MCU) or other digital devices. It can also be used for LED dimming control, pushbutton monitoring, and various other applications.

  4. What is the operating voltage range of PCA9534APWG4?

    • The operating voltage range is from 2.3V to 5.5V.

  5. What is the maximum sink current per I/O for PCA9534APWG4?

    • The maximum sink current per I/O is 25mA.

  6. Can PCA9534APWG4 be cascaded to expand the I/Os?

    • Yes, multiple PCA9534APWG4 devices can be cascaded to expand the I/Os.

  7. Does PCA9534APWG4 support hardware addressing?

    • Yes, PCA9534APWG4 supports hardware address pins for configuring the device address.

  8. What is the typical standby current consumption of PCA9534APWG4?

    • The typical standby current consumption is 1µA.

  9. Is PCA9534APWG4 compatible with standard I2C-bus and SMBus protocols?

    • Yes, PCA9534APWG4 is fully compatible with standard I2C-bus and SMBus protocols.

  10. Are there any application notes or reference designs available for PCA9534APWG4?

    • Yes, application notes and reference designs are available from the manufacturer's website to assist in the implementation of PCA9534APWG4 in various technical solutions.