Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Chip Model | TCA9548A |
| Channel Count | 8 Independent I2C Channels |
| Operating Voltage | 1.65V to 5.5V |
| Interface Type | I2C / IIC |
| Address Configuration | 3 Address Pins (A0, A1, A2) |
| Max Bus Capacitance | 50pF per channel |
| Board Dimensions | 45mm x 35mm |
| Mounting Holes | 4 x 3mm Standard Holes |
| Reset Function | Active Low Reset Pin |
| Compatibility | Arduino, Raspberry Pi, ESP32 |
Anonymous
Mar 29, 2026
Rating: 4/5
Solid industrial control component
We use these in our prototyping lab. They are robust and handle voltage variations well. Would prefer if it came with a case, but for the price, it's an excellent value.
Anonymous
Mar 27, 2026
Rating: 5/5
Great for learning
Used this for my university final year project. It allowed me to interface many modules with a single microcontroller. Very reliable and no overheating issues during long test runs.
Anonymous
Mar 25, 2026
Rating: 5/5
Perfect for sensor arrays
This board solved my address conflict issues immediately. I connected eight identical temperature sensors without any code headaches. The build quality is solid and the labeling is clear.
Anonymous
Mar 19, 2026
Rating: 5/5
Plug and play simplicity
Library support for Arduino and Python is excellent. I had all 8 channels up and running in under 20 minutes. Highly recommend for anyone stuck with I2C address limitations.
Anonymous
Mar 08, 2026
Rating: 4/5
Works as expected
Great little module for expanding I2C capabilities. The only reason for 4 stars is that the header pins were not pre-soldered, but that's minor. Communication is stable at 400kHz.
Anonymous
Mar 03, 2026
Rating: 5/5
Essential for complex projects
If you are building a robot with multiple servos and sensors, you need this. It handles the multiplexing seamlessly. Documentation online is plentiful which helped me get started quickly.
Q: Can I mix devices with different voltages on the channels?
A: Yes, one of the key features of the TCA9548A is its ability to translate voltages, allowing you to connect 1.8V, 2.5V, 3.3V, and 5V devices on different channels simultaneously.
Q: How do I change the I2C address of the module?
A: You can configure the address by setting the logic levels on the A0, A1, and A2 pins. This allows for up to 8 different addresses if you need to stack multiple modules.
Q: Can this board be used with 3.3V logic levels?
A: Yes, the TCA9548A supports an operating voltage range from 1.65V to 5.5V, making it fully compatible with both 3.3V and 5V systems.
Q: Does this come with header pins included?
A: The module typically comes with the PCB only. You will need to purchase and solder your own header pins separately, allowing you to choose between straight or right-angle headers.
Q: Is there a maximum speed limit for the I2C communication?
A: The device supports standard-mode (100 kHz) and fast-mode (400 kHz) operations. It is generally not recommended to exceed 400 kHz for stability.
Custom Travertine Stone Signage with Natural Marble 3D Lettering and Spherical Characters for Cafes, Clothing Stores, and Studios
$170.00
CANDLE.LAB | Realistic Cookie Series DIY Aromatherapy Plaster Candle Diffuser Handmade Silicone Mold
$12.00
Zhao Mengfu Calligraphy Copybook - Running Script 'Qingyun Zhi', Red-Traced Practice Paper for Beginners in Calligraphy
$15.80
Aesthetic Street Scene Watercolor Line Art for Coloring, 16K Landscape Watercolor Coloring Book, Painting Book, Cotton Pulp Watercolor Album
$15.80
Warehouse Nitrogen Sealing Generator - High-Purity Food-Grade PSA Skid-Mounted Container Equipment
$959.00
Ransheng UV Resin Gel, UV Crystal Glue for Gemstones, Ear Cuff Sealing, Dried Flower Molds, DIY Quick-Dry UV Epoxy
$44.00
Dairy Processing Production Line, Pasteurized Milk Equipment, Low-Temperature Sterilization and Fermentation Machine for Cow and Camel Milk
$8,203.00
Blue Lint-Free Wiping Paper - Industrial Large Roll Oil-Absorbent Shop Towels
$62.00
Green-Red AB Glue 5-Minute Fast-Drying Acrylate AB Glue for Glass Ceramic Metal Structural Adhesive Quick Set
$18.13
![Northern Wei Dynasty Inscriptions: Twenty Pieces from Longmen [Rubbing] - Original Size Wei Bei Calligraphy Copybook from Luoyang Longmen Grottoes](https://www.gosteppe.com/cache/small/product/270189/legacy-main-0c626807b3c375d4d5d6a89b.webp)
Northern Wei Dynasty Inscriptions: Twenty Pieces from Longmen [Rubbing] - Original Size Wei Bei Calligraphy Copybook from Luoyang Longmen Grottoes
$40.30
Ru Kiln Celadon Ceramic Brush Washer Set - Large, Medium, and Small Ink Dishes for Chinese Calligraphy and Painting Supplies
$88.80
Multi-Layer Over-Toilet Storage Rack for Bathroom, Laundry Room, and Balcony - Floor Standing Organizer
$44.96
Wrought Iron Solid Stainless Steel Letters – Minimalist Space Signage, Custom Metal Advertising Letters for Storefronts & Feature Walls
$10.00
Shimoyama 304 Stainless Steel Telescopic Rod - Kitchen Sink Cutting Board Support Rack for Dish Drying and Cloth Hanging
$74.80
Modified Wheel Lug Nuts Forged Steel High Strength for Lafesta Regal CT4 Civic Accord Crown Mazda3
$209.00
Milk Separator Machine - Electric Cream Skimmer and Butter Churn for Home and Commercial Use (Cow and Goat Milk)
$946.00
Three-Phase Auto-Reclosing Leakage Circuit Breaker - Smart Phase Loss, Undervoltage, Overload Protection with 485 Communication for PV Grid Connection
$693.20
Multi-Function Vegetable Cutter Commercial Electric for Cafeterias Fully Automatic Chili Scallion Chopper Imitation Hand-Cut Leek Machine
$1,600.00
Zhengtong ZT30 Fog Cannon - Micron-Level Humidification & Cooling Spray System for Steel Mills
$6,000.00
100Pcs Custom Clothing Hang Tags Personalized Plastic Securi
$125.94
Wall-Mounted Bathroom Storage Shelf, No-Drill Organizer for Sink, Shower, and Toilet Area
$5.76
Thickened 5mm Wool Felt Mat for Calligraphy Practice - Premium Writing Pad for Students and Beginners, Part of Four Treasures of the Study Set
$2.80
Multi-Function Car Tire Stone Removal Tool with Hook for Picking Out Rocks
$4.06
Label Stripping Machine – Semi-Automatic Unit for Beer, Baijiu, and Glass Bottle Label Removal; Custom Manufacturing Available
$19,980.00
High-Strength Manganese Steel Lifting Chain 6*18mm G80 Wear-Resistant Towing Chain
$84.34
Touchmark Acrylic Markers for Elementary Art, Washable Watercolor Pens for Kids' Drawing and Painting
$10.80
Official Flagship Store Steel Tongue Drum, C Key, 6-inch, 11 Notes, Carbon Steel Performance Grade Instrument for Kids and Students
$41.10
Outdoor Waterproof Backpack Camouflage Dry Bag with Wet/Dry Separation for Swimming, Rafting, and Trekking
$8.42
![[Save $50 on Order] Bundle: 5 Notebooks + 2 Pens + 20 Refills + 2 Grip Correctors](https://www.gosteppe.com/cache/small/product/270170/legacy-main-59be8c850af1ec303ad4901b.webp)
[Save $50 on Order] Bundle: 5 Notebooks + 2 Pens + 20 Refills + 2 Grip Correctors
$39.90
Sketching Tool Set for Art Students - Includes Blending Stumps, Tortillons, Paper Stumps, Sponge Balls, Cotton Swabs, Highlight Pens, Gray Tone Tools, Insert Knives, Smudging Knives, Scrapers, and Blending Cotton
$7.65
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
