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TCA9554DWR
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TCA9554DWR

Product Overview

Category

TCA9554DWR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for input/output (I/O) expansion in various electronic devices.

Characteristics

  • TCA9554DWR is a 16-bit I/O expander with an I2C interface.
  • It operates at a voltage range of 1.65V to 5.5V, making it suitable for a wide range of applications.
  • The device supports both push-pull and open-drain output configurations.
  • It has built-in programmable hardware interrupt pins.
  • TCA9554DWR offers low standby current consumption, making it energy-efficient.

Package

The TCA9554DWR IC is available in a small-sized SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of TCA9554DWR lies in its ability to expand the number of I/O pins available in electronic systems, thereby enhancing their functionality.

Packaging/Quantity

The TCA9554DWR IC is typically sold in reels containing a quantity of 2500 units per reel.

Specifications

  • Number of I/O Pins: 16
  • Supply Voltage Range: 1.65V to 5.5V
  • Interface: I2C
  • Output Configuration: Push-Pull or Open-Drain
  • Hardware Interrupt Pins: Programmable
  • Standby Current: Low

Detailed Pin Configuration

The TCA9554DWR IC has a total of 20 pins. The pin configuration is as follows:

  1. SDA - Serial Data Input/Output
  2. SCL - Serial Clock Input
  3. A0 - Address Input Bit 0
  4. A1 - Address Input Bit 1
  5. A2 - Address Input Bit 2
  6. RESET - Reset Input
  7. INT - Interrupt Output 8-15. P0-P7 - General Purpose I/O Pins 16-20. GND - Ground

Functional Features

  1. I/O Expansion: TCA9554DWR provides an additional 16 I/O pins, allowing for increased connectivity and functionality in electronic systems.
  2. Flexible Voltage Range: The IC operates within a wide voltage range of 1.65V to 5.5V, making it compatible with various power supply configurations.
  3. Programmable Interrupts: TCA9554DWR supports hardware interrupt pins that can be programmed to trigger specific actions based on user-defined conditions.
  4. Low Standby Current: The device consumes minimal current in standby mode, contributing to energy efficiency and extended battery life.

Advantages and Disadvantages

Advantages

  • Enables I/O expansion without the need for additional microcontroller pins.
  • Wide operating voltage range allows for compatibility with various systems.
  • Programmable interrupts enhance system responsiveness.
  • Low standby current consumption contributes to energy efficiency.

Disadvantages

  • Limited to 16 additional I/O pins, which may not be sufficient for certain complex applications.
  • Requires familiarity with I2C interface for proper integration.

Working Principles

TCA9554DWR utilizes the I2C interface to communicate with the microcontroller or host system. It acts as an I/O expander by providing 16 additional pins that can be configured as inputs or outputs. The device receives commands from the microcontroller via the I2C bus and responds accordingly, allowing for seamless integration into the system.

Detailed Application Field Plans

The TCA9554DWR IC finds applications in various fields, including but not limited to:

  1. Embedded Systems: Used to expand the number of I/O pins in microcontroller-based embedded systems, enabling connectivity with multiple peripheral devices.
  2. Industrial Automation: Employed in industrial automation systems to enhance the number of I/O channels available for controlling sensors, actuators, and other components.
  3. Consumer Electronics: Integrated into consumer electronic devices to provide additional I/O capabilities, facilitating user interaction and connectivity options.
  4. Internet of Things (IoT): Utilized in IoT devices to expand the number of I/O pins, enabling seamless integration with sensors, actuators, and communication modules.

Detailed and Complete Alternative Models

  1. MCP23017: Another 16-bit I/O expander with an I2C interface, offering similar functionality to TCA9554DWR.
  2. PCF8574: An 8-bit I/O expander with I2C interface, suitable for applications requiring a smaller number of additional I/O pins.
  3. MAX7313: A 16-bit I/O expander with an I2C/SMBus interface, providing similar features to TCA9554DWR.

These alternative models offer comparable functionality and can be considered based on specific application requirements

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TCA9554DWR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TCA9554DWR in technical solutions:

  1. Q: What is TCA9554DWR? A: TCA9554DWR is a 16-bit I/O expander with I2C interface, which allows you to expand the number of GPIO pins available in your microcontroller or system.

  2. Q: What is the operating voltage range of TCA9554DWR? A: The operating voltage range of TCA9554DWR is typically between 1.65V and 5.5V.

  3. Q: How many GPIO pins can be controlled using TCA9554DWR? A: TCA9554DWR provides 16 GPIO pins that can be individually controlled as inputs or outputs.

  4. Q: Can TCA9554DWR handle interrupts? A: Yes, TCA9554DWR has interrupt functionality that can be configured to trigger an interrupt on specific GPIO pin changes.

  5. Q: What is the maximum current that can be sourced/sunk by each GPIO pin? A: Each GPIO pin of TCA9554DWR can source/sink up to 25mA of current.

  6. Q: Is TCA9554DWR compatible with I2C bus? A: Yes, TCA9554DWR communicates over the I2C bus, making it compatible with a wide range of microcontrollers and systems.

  7. Q: Can TCA9554DWR be used for level shifting? A: Yes, TCA9554DWR can be used for level shifting as it supports different voltage levels between the I2C bus and the GPIO pins.

  8. Q: Does TCA9554DWR have internal pull-up resistors? A: Yes, TCA9554DWR has internal programmable pull-up resistors that can be enabled or disabled for each GPIO pin.

  9. Q: Can TCA9554DWR operate in a low-power mode? A: Yes, TCA9554DWR supports a low-power mode where it consumes minimal power when not actively driving the GPIO pins.

  10. Q: Are there any evaluation boards or reference designs available for TCA9554DWR? A: Yes, Texas Instruments provides evaluation boards and reference designs for TCA9554DWR, which can help you get started with your application quickly.

Please note that these answers are general and may vary depending on the specific implementation and datasheet of TCA9554DWR.