TCA9554APWR

Overview

Product Category

TCA9554APWR 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

• TCA9554APWR 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, allowing for efficient data transfer.
• It offers programmable interrupt output capability, enhancing system flexibility.
• TCA9554APWR has low standby current consumption, contributing to power efficiency.

Package and Quantity

The TCA9554APWR IC is available in a TSSOP-24 package. It is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Number of I/O Pins: 16
• I2C Bus Frequency: Up to 400kHz
• Standby Current: 1µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TCA9554APWR IC has a total of 24 pins, which are assigned as follows:

Pin 1: SDA (Serial Data Input/Output) Pin 2: SCL (Serial Clock Input) Pin 3-10: I/O0-I/O7 (General Purpose I/O Pins) Pin 11-18: I/O8-I/O15 (General Purpose I/O Pins) Pin 19: INT (Interrupt Output) Pin 20: A0 (Address Select Bit 0) Pin 21: A1 (Address Select Bit 1) Pin 22: A2 (Address Select Bit 2) Pin 23: GND (Ground) Pin 24: VCC (Supply Voltage)

Functional Features

• I2C Interface: TCA9554APWR utilizes the I2C bus protocol for communication with the host microcontroller or other devices.
• Input/Output Expansion: It provides 16 additional I/O pins, allowing for increased connectivity and flexibility in system design.
• Programmable Interrupt Output: The IC can be configured to generate an interrupt signal based on specific conditions, enabling efficient event-driven processing.
• Low Standby Current: TCA9554APWR has a low power consumption mode when not actively transmitting or receiving data, contributing to energy efficiency.

Advantages and Disadvantages

Advantages

• Compact Size: The TCA9554APWR IC is available in a small package, making it suitable for space-constrained applications.
• Wide Voltage Range: It operates within a broad voltage range, providing compatibility with various systems.
• High-Speed Interface: The I2C bus interface allows for fast and reliable data transfer.
• Programmable Interrupts: The device offers flexibility in handling events and optimizing system performance.

Disadvantages

• Limited I/O Pins: With only 16 I/O pins, the TCA9554APWR may not be sufficient for applications requiring extensive I/O expansion.
• Dependency on I2C Bus: The functionality of the IC relies on the proper functioning of the I2C bus, which may introduce potential points of failure.

Working Principles

The TCA9554APWR IC functions as an I/O expander by utilizing the I2C bus protocol. It communicates with the host microcontroller or other devices through the SDA and SCL lines. The I2C bus allows bidirectional data transfer, enabling the microcontroller to read or write data to the IC's I/O pins.

The device can be configured to operate in different modes, such as input or output mode, for each individual pin. It also supports programmable interrupt generation based on specific conditions, providing a means for efficient event-driven processing.

Application Field Plans

The TCA9554APWR IC finds applications in various fields, including but not limited to:

1. Consumer Electronics: Used for I/O expansion in smart home devices, remote controls, and audio/video equipment.
2. Industrial Automation: Employed in control systems, sensors, and actuators to enhance connectivity and expand I/O capabilities.
3. Automotive Electronics: Integrated into automotive control modules, infotainment systems, and lighting systems for increased functionality.
4. Internet of Things (IoT): Utilized in IoT devices to enable communication with multiple sensors and actuators.
5. Medical Devices: Incorporated into medical equipment for expanding I/O capabilities and enhancing connectivity.

Alternative Models

Several alternative models to the TCA9554APWR IC are available in the market, offering similar functionality. Some notable alternatives include:

1. MCP23017: