TCA6408ARGTR
Product Overview
Category
TCA6408ARGTR belongs to the category of integrated circuits (ICs).
Use
This product is commonly used for general-purpose input/output (GPIO) expansion applications.
Characteristics
- 8-bit input/output expander
- Low standby current consumption
- Schmitt-trigger action on all inputs
- Open-drain outputs with selectable polarity
- I2C interface compatibility
- 5V tolerant inputs
- ESD protection exceeds JESD 22
Package
TCA6408ARGTR is available in a small-outline transistor package (SOT-23-20).
Essence
The essence of TCA6408ARGTR lies in its ability to expand the number of GPIO pins available for use in various applications.
Packaging/Quantity
This product is typically packaged in reels, with 3000 units per reel.
Specifications
- Supply voltage range: 1.65V to 5.5V
- Input voltage range: 0V to VDD
- Output voltage range: 0V to VDD
- Operating temperature range: -40°C to +85°C
- I2C bus frequency support: 100kHz and 400kHz
Detailed Pin Configuration
TCA6408ARGTR has a total of 20 pins, which are assigned as follows:
- Pin 1: SDA (Serial Data)
- Pin 2: SCL (Serial Clock)
- Pins 3-10: I/O0-I/O7 (General-Purpose Input/Output)
- Pins 11-13: GND (Ground)
- Pin 14: NC (No Connection)
- Pin 15: A0 (Address Bit 0)
- Pin 16: A1 (Address Bit 1)
- Pin 17: A2 (Address Bit 2)
- Pin 18: VDD (Supply Voltage)
- Pins 19-20: NC (No Connection)
Functional Features
- GPIO expansion: TCA6408ARGTR provides an additional 8-bit input/output expander, allowing for increased flexibility in connecting external devices.
- Low power consumption: The product is designed to consume minimal standby current, making it suitable for battery-powered applications.
- Schmitt-trigger action: All inputs feature Schmitt-trigger action, ensuring reliable signal detection even in the presence of noise.
- Open-drain outputs: The open-drain outputs can be configured with selectable polarity, enabling compatibility with various systems.
- I2C interface compatibility: TCA6408ARGTR supports the widely used I2C interface, simplifying integration into existing designs.
- ESD protection: The product exceeds JESD 22 standards for electrostatic discharge (ESD) protection, enhancing its robustness.
Advantages and Disadvantages
Advantages
- Provides additional GPIO pins for expanding connectivity options
- Low power consumption extends battery life in portable devices
- Reliable signal detection with Schmitt-trigger action
- Flexible output configuration with open-drain outputs
- Easy integration with I2C interface compatibility
- Enhanced durability with ESD protection
Disadvantages
- Limited to 8-bit input/output expansion, may not be sufficient for complex applications requiring a larger number of GPIO pins
- SOT-23-20 package may limit heat dissipation capabilities in high-power applications
Working Principles
TCA6408ARGTR operates by receiving commands through the I2C interface. It communicates with the microcontroller or host device to expand the available GPIO pins. The inputs and outputs are controlled based on the received commands, allowing for versatile connectivity options.
Detailed Application Field Plans
TCA6408ARGTR finds application in various fields, including but not limited to: - Consumer electronics - Industrial automation - Internet of Things (IoT) devices - Automotive systems - Medical equipment
In consumer electronics, it can be used for keypad scanning, LED control, or general-purpose I/O expansion. In industrial automation, it enables connectivity with sensors, actuators, and other peripheral devices. IoT devices benefit from its GPIO expansion capabilities for sensor integration and control. Automotive systems can utilize TCA6408ARGTR for switch matrix expansion or lighting control. Medical equipment may employ it for interfacing with external devices or expanding input/output options.
Detailed and Complete Alternative Models
- PCA9538RGTR: 8-bit I2C-bus and SMBus I/O expander
- MCP23008-E/SO: 8-bit I/O expander with I2C interface
- MAX7313ATG+: 16-port I/O expander with serial interface
- SN74HC595N: 8-bit shift register with output latches
These alternative models offer similar functionality to TCA6408ARGTR and can be considered based on specific application requirements.
技術ソリューションにおける TCA6408ARGTR の適用に関連する 10 件の一般的な質問と回答をリストします。
Sure! Here are 10 common questions and answers related to the application of TCA6408ARGTR in technical solutions:
Q: What is TCA6408ARGTR? A: TCA6408ARGTR is a general-purpose input/output (GPIO) expander with 8 I/O pins, which can be used to increase the number of available I/Os in a microcontroller-based system.
Q: What is the operating voltage range of TCA6408ARGTR? A: The operating voltage range of TCA6408ARGTR is typically between 1.65V and 5.5V.
Q: How can I communicate with TCA6408ARGTR? A: TCA6408ARGTR supports I2C communication protocol, allowing you to control and read the status of its I/O pins using only two wires.
Q: Can TCA6408ARGTR be used as both input and output pins? A: Yes, each of the 8 I/O pins on TCA6408ARGTR can be individually configured as either an input or an output.
Q: What is the maximum current that TCA6408ARGTR can source/sink per pin? A: TCA6408ARGTR can source/sink up to 25mA per pin, making it suitable for driving LEDs, relays, and other low-power devices.
Q: Can TCA6408ARGTR handle higher voltages than its supply voltage? A: No, TCA6408ARGTR is not designed to handle voltages higher than its supply voltage. Exceeding the supply voltage may damage the device.
Q: Is TCA6408ARGTR compatible with 5V microcontrollers? A: Yes, TCA6408ARGTR is compatible with 5V microcontrollers as it can operate within the 1.65V to 5.5V voltage range.
Q: Can I use multiple TCA6408ARGTR devices in the same system? A: Yes, you can use multiple TCA6408ARGTR devices in the same system by assigning unique I2C addresses to each device.
Q: Does TCA6408ARGTR have any built-in pull-up resistors? A: Yes, TCA6408ARGTR has programmable internal pull-up resistors that can be enabled or disabled for each I/O pin individually.
Q: Are there any application examples for TCA6408ARGTR? A: Yes, TCA6408ARGTR can be used in various applications such as keypad scanning, LED control, digital sensors interfacing, and general-purpose I/O expansion in embedded systems.
Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.