TCA9554ADBR

Product Overview

Category

TCA9554ADBR 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

• TCA9554ADBR 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 provides high-speed I2C bus interface with speeds up to 400kHz.
• It offers 16 individually programmable GPIO pins, which can be configured as inputs or outputs.
• TCA9554ADBR has built-in interrupt functionality, allowing efficient communication between the IC and the host microcontroller.

Package and Quantity

The TCA9554ADBR IC is available in a small outline package (SOIC) with 24 pins. It is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• I2C Bus Frequency: Up to 400kHz
• Number of GPIO Pins: 16
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOIC-24

Pin Configuration

The pin configuration of TCA9554ADBR is as follows:

```

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| | | U1 | |_______________|

   Pinout

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| | | SDA | | SCL | | INT(n) | | A0-A2 | | P0-P7 | |______________________| ```

Functional Features

• I2C Interface: TCA9554ADBR utilizes the I2C bus protocol for communication with the host microcontroller, enabling easy integration into various systems.
• GPIO Expansion: With 16 programmable GPIO pins, this IC allows for increased input/output capabilities in electronic devices.
• Interrupt Functionality: The built-in interrupt feature enables efficient communication between the IC and the microcontroller, reducing the need for continuous polling.

Advantages and Disadvantages

Advantages

• Wide voltage range allows compatibility with different power supply systems.
• High-speed I2C interface facilitates fast data transfer.
• Small package size makes it suitable for space-constrained applications.
• Interrupt functionality enhances system efficiency.

Disadvantages

• Limited number of GPIO pins may not be sufficient for complex applications requiring extensive I/O expansion.
• The SOIC package may not be suitable for applications that require higher thermal dissipation.

Working Principles

TCA9554ADBR operates by receiving commands from the host microcontroller through the I2C bus. These commands configure the GPIO pins as either inputs or outputs. The IC then monitors the status of the input pins and provides corresponding output signals on the configured output pins. The interrupt functionality allows the microcontroller to be notified when specific events occur, minimizing the need for continuous polling and conserving system resources.

Application Field Plans

TCA9554ADBR finds applications in various fields, including but not limited to: - Consumer electronics - Industrial automation - Internet of Things (IoT) devices - Automotive electronics - Medical equipment

Alternative Models

There are several alternative models available in the market that offer similar functionality to TCA9554ADBR. Some notable alternatives include: - MCP23017 - PCF8574 - MAX7313

These alternative models can be considered based on specific application requirements and availability.

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