TCA9554DBQR
Product Overview
Category
TCA9554DBQR belongs to the category of integrated circuits (ICs).
Use
This product is commonly used for input/output (I/O) expansion in various electronic devices.
Characteristics
- TCA9554DBQR 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 communication with the host microcontroller.
- It offers programmable polarity inversion for input pins, enhancing flexibility in system design.
- TCA9554DBQR has low standby current consumption, making it energy-efficient.
Package and Quantity
TCA9554DBQR is available in a small-sized, 16-pin SSOP package. It is typically sold in reels containing a quantity of 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 pin configuration of TCA9554DBQR is as follows:
```
| | | U1 | |_______________|
Pinout
| | | SDA | | SCL | | P0 to P7 | | P10 to P15 | |_______________________| ```
Functional Features
- I2C Interface: TCA9554DBQR utilizes the I2C bus protocol for communication with the host microcontroller. This allows for easy integration into existing systems.
- Input/Output Expansion: With 16 I/O pins, this device provides additional digital input/output capabilities, enabling the connection of multiple peripheral devices.
- Polarity Inversion: The product offers programmable polarity inversion for input pins, allowing flexibility in handling different signal polarities.
- Low Standby Current: TCA9554DBQR has a low standby current consumption, making it suitable for power-sensitive applications.
Advantages and Disadvantages
Advantages
- Compact Size: The small-sized SSOP package makes it suitable for space-constrained designs.
- Wide Voltage Range: The wide operating voltage range allows for compatibility with various power supply configurations.
- Energy-Efficient: The low standby current consumption helps conserve power in battery-powered applications.
Disadvantages
- Limited I/O Pins: With only 16 I/O pins, this device may not be suitable for applications requiring a large number of inputs or outputs.
- Lack of Analog Functionality: TCA9554DBQR is designed specifically for digital I/O expansion and does not support analog signals.
Working Principles
TCA9554DBQR operates by receiving commands from the host microcontroller through the I2C interface. These commands control the direction (input or output) and state (high or low) of each I/O pin. The device communicates back to the microcontroller, providing status information about the input pins. By utilizing the I2C bus, the microcontroller can easily expand its I/O capabilities without using a significant number of GPIO pins.
Application Field Plans
TCA9554DBQR finds application 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: Enables additional I/O capabilities in industrial control systems, PLCs, and robotics. 3. Automotive: Used for I/O expansion in automotive infotainment systems, dashboard controls, and lighting systems. 4. Internet of Things (IoT): Enables connectivity and I/O expansion in IoT devices such as sensors, actuators, and smart appliances.
Alternative Models
Several alternative models to TCA9554DBQR are available in the market, offering similar functionality. Some notable alternatives include: - MCP23017: A popular I2C-based I/O expander with 16 I/O pins. - PCF8574: Another widely used I2C-based I/O expander with 8 I/O pins. - MAX7313: A 16-bit I/O expander with an I2C interface and additional features like interrupt support.
These alternative models provide options for designers based on specific requirements and system constraints.
In conclusion, TCA9554DBQR is a versatile I/O expander integrated circuit that offers flexibility, energy efficiency, and ease of integration. With its wide range of applications and availability of alternative models, it caters to the needs of various industries and electronic
Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät TCA9554DBQR :n soveltamiseen teknisissä ratkaisuissa
Sure! Here are 10 common questions and answers related to the application of TCA9554DBQR:
Q: What is TCA9554DBQR? A: TCA9554DBQR is a 16-bit I/O expander with an I2C interface, commonly used in technical solutions for expanding the number of available GPIO pins.
Q: What is the operating voltage range of TCA9554DBQR? A: The operating voltage range of TCA9554DBQR is typically between 1.65V and 5.5V.
Q: How many GPIO pins can be controlled using TCA9554DBQR? A: TCA9554DBQR provides 16 GPIO pins that can be individually controlled.
Q: Can TCA9554DBQR be used as both input and output pins? A: Yes, TCA9554DBQR can be configured as either input or output pins based on the desired application.
Q: What is the maximum current that can be sourced/sunk by each GPIO pin? A: Each GPIO pin of TCA9554DBQR can source/sink up to 25mA of current.
Q: How is TCA9554DBQR addressed in an I2C bus? A: TCA9554DBQR has three address pins (A0, A1, and A2) that can be set high or low to assign a unique I2C address to the device.
Q: Can multiple TCA9554DBQR devices be connected to the same I2C bus? A: Yes, multiple TCA9554DBQR devices can be connected to the same I2C bus by assigning different addresses to each device.
Q: Is TCA9554DBQR compatible with 3.3V and 5V microcontrollers? A: Yes, TCA9554DBQR is compatible with both 3.3V and 5V microcontrollers as it operates within their voltage range.
Q: Can TCA9554DBQR be used to control LEDs or other low-power devices? A: Yes, TCA9554DBQR can be used to control LEDs or other low-power devices by connecting them to the GPIO pins.
Q: Are there any libraries or example codes available for programming TCA9554DBQR? A: Yes, many microcontroller platforms provide libraries and example codes for interfacing with TCA9554DBQR, making it easier to integrate into technical solutions.
Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.