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- Adafruit TCA9548A I2C Multiplexer
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12078088
Adafruit TCA9548A I2C Multiplexer
86% of respondents would recommend this to a friend
Item #:
12078088
MGA 78840
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Finally, a way to get up to 8 same-address I2C devices hooked up to one microcontroller with TCA9548A 1-to-8 I2C multiplexer
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What Stands Out
I2C Expansion
Easily connect multiple I2C devices to a single microcontroller, expanding communication capabilities without addressing conflicts. Ideal for complex projects requiring multiple sensors or peripherals.
Robust Design
Durable construction allows for reliable performance in various electronic projects, ensuring longevity and stability in both prototyping and final product applications.
Easy Integration
Simple to integrate with popular microcontrollers, supported by comprehensive documentation. Streamline your development process and reduce time-to-market with straightforward setup and usage.
Product Details
- Finally, a way to get up to 8 same-address I2C devices hooked up to one microcontroller - this multiplexer acts as a gatekeeper, shuttling the commands to the selected set of I2C pins with your command.
- Using it is fairly straight-forward: the multiplexer itself is on I2C address 0x70 (but can be adjusted from 0x70 to 0x77) and you simply write a single byte with the desired multiplexed output number to that port, and bam - any future I2C packets will get sent to that port. In theory, you could have 8 of these multiplexers on each of 0x70-0x77 addresses in order to control 64 of the same-I2C-addressed-part.
- Like all Adafruit breakouts, we put this nice chip on a breakout for you so you can use it on a breadboard with capacitors, and pullups and pulldowns to make usage a snap. Some header is required and once soldered in you can plug it into a solderless-breadboard. The chip itself is 3V and 5V compliant so you can use it with any logic level.
- TCA9548A I2C Multiplexer
Product Technical Details
| Item Weight | 0.32 ounces |
| Manufacturer | Adafruit |
| Item model number | 8541585622 |
| Is Discontinued By Manufacturer | No |
Who Should Buy?
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I2C Projects
Ideal for hobbyists and engineers managing multiple I2C devices without address conflicts in projects like robotics.
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Sensor Networks
Perfect for applications requiring multiple sensors to communicate over I2C, ensuring seamless data management and flow.
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Microcontroller Users
Beneficial for users utilizing Arduino or Raspberry Pi who need to expand I2C capabilities for various peripherals.
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Simple Applications
Not suitable for projects with only a single I2C device, as it adds unnecessary complexity.
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Non-I2C Devices
Does not work for devices that do not support the I2C protocol, limiting its usability.
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Limited Expertise
May not be ideal for beginners unfamiliar with multiplexing concepts and I2C communication protocols.
Product Description
About This Item
Introducing the Adafruit TCA9548A I2C Multiplexer [ADA2717], the solution to all your I2C sensor wiring challenges! Imagine finding the perfect I2C sensor for your Arduino project, only to realize that it has a fixed I2C address. You know that having two devices with the same address on the same SDA/SCL pins is a no-go. But don't worry, because with this ultra-cool TCA9548A 1-to-8 I2C multiplexer, you'll never be out of luck again! This multiplexer acts as a gatekeeper, allowing you to connect up to 8 same-address I2C devices to a single microcontroller.
Simply write a single byte with the desired multiplexed output number to the port, and voila - all future I2C packets will be sent to that specific port. To make usage a snap, we have put this nice chip on a breakout board for you. You can easily use it on a breadboard with capacitors, pull-ups, and pull-downs. Some header soldering is required, but once it's in place, you can conveniently plug it into a solderless-breadboard. The Adafruit TCA9548A Multiplexer is compatible with both 3V and 5V logic levels, making it suitable for use with any microcontroller.
Plus, it can be adjusted from I2C address 0x70 to 0x77, giving you the flexibility to expand your setup even further. So, say goodbye to I2C address conflicts and hello to seamless connectivity. Take your Arduino projects to the next level with the Adafruit TCA9548A I2C Multiplexer. Don't miss out on this essential tool for simplifying your I2C sensor setups.
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Customer Questions & Answers
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Question:
What is the Adafruit TCA9548A I2C Multiplexer used for?
Answer: The Adafruit TCA9548A I2C Multiplexer is designed to allow multiple I2C devices to connect to a single I2C bus. This multiplexer enables you to control up to eight different I2C devices, which is particularly useful for projects with limited I2C ports on microcontrollers like Raspberry Pi or Arduino. By selecting which channel to activate, you can manage complex sensor networks or interface with multiple identical devices, making it ideal for robotics, sensor applications, and communications. -
Question:
How do I connect the TCA9548A to my microcontroller?
Answer: To connect the TCA9548A to your microcontroller, you need to connect the SDA and SCL lines of your I2C bus to the corresponding pins on the multiplexer. Then, connect your I2C devices to the output pins of the multiplexer. Each device will share the same address but operate on different channels, controlled via digital pins. This setup allows for systematic selection and addressing of your I2C devices, which is beneficial in applications requiring precise data collection from multiple sources. -
Question:
Can the TCA9548A work with 5V and 3.3V systems?
Answer: Yes, the TCA9548A is compatible with both 5V and 3.3V logic levels. You need to power it according to your system's requirements; however, it ensures smooth communication between components with different voltage levels. This adaptability makes it versatile for various projects, such as integrating sensors and actuators that operate on different voltage systems, allowing developers to maximize compatibility across devices. -
Question:
What is the maximum number of I2C devices the TCA9548A can support?
Answer: The Adafruit TCA9548A enables the connection of up to eight I2C devices using a single I2C bus. Each output channel acts independently, thereby allowing the simultaneous use of devices that would normally conflict due to identical addresses. This capability is particularly useful when working with multiple sensors, displays, or modules that share the same I2C address, making it ideal for complex projects and smart appliances. -
Question:
Do I need pull-up resistors for the I2C lines when using TCA9548A?
Answer: Yes, pull-up resistors are recommended for the SDA and SCL lines in an I2C bus setup. These resistors are essential for maintaining stable communication signals, especially with longer wire lengths. The TCA9548A doesn't have built-in pull-ups, so including them ensures reliable operation and prevents data corruption. In applications like robotics or home automation, where signal integrity is critical, these resistors help maintain effective device communication. -
Question:
How does the TCA9548A handle addressing for multiple devices?
Answer: The TCA9548A separates I2C devices into channels that your microcontroller can selectively activate. By setting the multiplexer to a certain channel, you can communicate with the desired device without interference from others. Each channel is controlled using a series of address bits sent over I2C, which means you can switch between devices on the fly. This feature is essential for scenarios like robotics, where multiple sensors may need to be read continuously but operate independently. -
Question:
Is it possible to cascade multiple TCA9548As?
Answer: Yes, multiple TCA9548As can be cascaded to increase the number of available channels. By connecting the output of one TCA9548A to the input of another, you can theoretically expand to handle dozens of devices. This cascading capability is vital for complex projects where many sensors or modules need to be managed. For instance, in an advanced environmental monitoring system, multiple TCA9548As can accommodate numerous environmental sensors to collect a variety of data. -
Question:
What programming libraries can I use with the TCA9548A?
Answer: Several programming libraries support the TCA9548A, including Adafruit’s own library for Arduino and Raspberry Pi. These libraries simplify the process of configuring the multiplexer and selecting channels, enabling straightforward integration into your projects. By leveraging these libraries, you can quickly implement the multiplexer functionalities, making it a go-to solution for both hobbyists and professionals in prototypes and production environments. -
Question:
Can I use the TCA9548A for non-I2C devices?
Answer: The TCA9548A is specifically designed for I2C devices, so it can't be directly used with non-I2C communications. However, some developers use similar multiplexing techniques for other communication protocols but with different hardware. For a robust I2C setup in projects like creating IoT sensors or managing multiple displays, the TCA9548A remains the best choice to simplify and manage the I2C communication. -
Question:
Where can I buy the Adafruit TCA9548A I2C Multiplexer in Madagascar?
Answer: You can purchase the Adafruit TCA9548A I2C Multiplexer from Ubuy in Madagascar. Ubuy offers a reliable platform for sourcing electronic components and accessories, including this multiplexer, providing a convenient shopping experience for your project needs.
Adafruit Analog Multiplexers 8541585622 Editorial Review
The Adafruit TCA9548A 1-to-8 I2C Multiplexer is a reliable and efficient product that allows multiple digital sensors and LCDs to work seamlessly with a single board. It is not meant to be used for analog inputs, but it works great for digital sensors and LCDs. Customers have successfully used this multiplexer for complex projects involving multiple MCP23017 port expanders and quadcopters with TOF sensors. The coding is easy to do, and the soldering and connecting process is straightforward. Adafruit offers excellent customer service and quality products.
Customer Reviews & Ratings
91 customers ratings
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5 Star
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Pros
- Reliable and efficient product
- Easy to install and connect to sensors
- Coding is straightforward
- Allows multiple digital sensors and LCDs to work with a single board
Cons
- Not suitable for analog inputs
Product Price History
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MGA 78840
Order now and get it around Thursday, June 25
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Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
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Features & Benefits
- The multiplexer acts as a gatekeeper, shuttling the commands to the selected set of I2C pins with your command
- You could have 8 of these multiplexers on each of 0x70-0x77 addresses in order to control 64 of the same-I2C-addressed-part
- The chip is 3V and 5V compliant
- You can use it with any logic level
- Can be adjusted from 0x70 to 0x77
- Use it on a breadboard with capacitors, pullups and pulldowns.