Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Chip Model | TCA9548A |
| Channel Count | 8 Independent Channels |
| Interface Type | I2C / IIC |
| Operating Voltage | 3.3V - 5V |
| Address Selection | Configurable via A0, A1, A2 pins |
| Max Bus Capacitance | 400 pF per channel |
| Package Type | TSSOP-24 mounted on PCB |
| Board Dimensions | 45mm x 35mm |
| Mounting Holes | 4 x 3mm diameter |
| Application | Arduino, Raspberry Pi, STM32 Development |
Anonymous
Mar 31, 2026
Rating: 4/5
Works as expected
Great little module. Setup was easy with the standard Arduino library. Only giving 4 stars because the silkscreen labels are a bit small to read.
Anonymous
Mar 25, 2026
Rating: 5/5
Perfect for sensor arrays
This board solved my address conflict issues immediately. I connected 8 different temperature sensors without any glitches. The soldering quality is excellent.
Anonymous
Mar 24, 2026
Rating: 4/5
Good value for money
Cheap and effective for university projects. Documentation could be better, but there are plenty of tutorials online for the TCA9548A chip.
Anonymous
Mar 23, 2026
Rating: 5/5
Clean signal integrity
Impressed by the signal quality. I was worried about noise with 8 channels active, but the multiplexer handles it very well. Highly recommended.
Anonymous
Mar 18, 2026
Rating: 5/5
Reliable expansion
Used this with a Raspberry Pi 4. The voltage levels shifted correctly between 3.3V and 5V devices. No communication drops so far.
Anonymous
Mar 05, 2026
Rating: 5/5
Essential for complex projects
If you are building a robot with multiple I2C devices, buy this. It allows you to isolate buses effectively. Very stable performance over 48 hours of testing.
Q: Is there a library available for Python on Raspberry Pi?
A: Yes, you can use the standard smbus2 library in Python to control the channel selection registers directly.
Q: Does this come with header pins soldered?
A: No, the board is shipped with unsoldered pin headers to allow for flexible mounting options. You will need to solder them yourself.
Q: Can this board work with 5V Arduino Uno?
A: Yes, the board supports operating voltages from 3.3V to 5V, making it fully compatible with the Arduino Uno.
Q: What happens if I exceed the 400pF capacitance limit?
A: Exceeding the capacitance limit may cause signal degradation or communication errors. This chip is designed to segment long buses to stay within limits per channel.
Q: How do I select the I2C address for the multiplexer itself?
A: The address is configured using the A0, A1, and A2 pins. By connecting these pins to VCC or GND, you can set one of 8 unique addresses.
Heavy-Duty Heat-Treated CV Joint Puller Tool - Axle Ball Cage Removal and Installation Device for Automotive Repair
$66.00
Mobile Integrated Waste Transfer Station - 17 Cubic Meters Movable Compression Container
$159,443.00
Antique Glaze White Ceramic Brush Washer Large Brush Washer Water Pot Ink Stone Washing Calligraphy Painting Brush Washing Basin Four Treasures of the Study
$16.80
Authentic Chinese Philosophy Classics: Di Tian Sui, Qiong Tong Bao Jian, San Ming Tong Hui - Annotated & Illustrated Edition
$29.90
Household Disposable Kitchen Sink Garbage Filter Mesh Drain Pool Dishwashing Basin Strainer Vegetable Bowl Leftover Sink
$3.51
Continental Run-Flat Tires: 225/235/245/255/265 45/50/55 R17/R18/R19/R20/R21/R22
$357.00
Foldable Steel Tire Stone Removal Hook - Multi-Tool for Tire Repair, Stone Picking, and Emergency Window Breaking with Storage Bag
$11.70
Integrated Catalytic Combustion Unit RCO Furnace - Exhaust Gas Treatment System with Activated Carbon Adsorption-Desorption and Catalytic Combustion
$231,249.00
Universal Waterproof and Sunproof Cover for E-Bike Charger with Outdoor Storage Box
$11.85
Baohong Paper Brick Watercolor Paper Pad, Medium/Coarse Texture, Square/Round Shapes for Painting, Sketching, and Cotton Pulp Practice
$28.00
Commercial Food Warmer Cabinet for Pies, Youtiao, Burgers, Egg Tarts, and Fried Chicken, Heating and Temperature-Controlled Display Case
$977.00
Masking Tape Spray Paint Shielding Paper for Art Students and Sketching - Non-bleeding, Residue-free, Hand-tearable, Shoe-safe
$1.00
Electric Scooter and Motorcycle Hook - Multi-Functional Storage Hanger for Delivery Bikes and Cargo Boxes
$2.50
Huirui 420AB Fast-Drying Glue for Silicone - Bonds ABS, Stainless Steel, TPE, Rubber; High-Strength Instant Adhesive for Difficult Materials
$36.00
Color Proofing Instrument Ink Mixing Tool Sample Making Machine
$1,860.00
Variable Frequency Drive 0.75kW 2.6A Three-Phase 380V
$1,430.00
2026 Spring PEP New Edition Primary English Grade 3 Volume 2 Four-Line Three-Grid Word Cards for Teachers, Open Class Competition Creative Blackboard Design, Teaching Contest Blackboard Strips and Teaching Aids
$11.30
Cold Brew Yogurt Fermentation Equipment - Manual Old-Style Yogurt Processing and Filling Line
$113,050.00
Electric Spray Painting Pen Set for Babies and Toddlers, Non-Toxic Washable Watercolor Markers, Drawing Tool Kit Toy
$49.50
![[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting](https://www.gosteppe.com/cache/small/product/270133/legacy-main-a12ad5b62abb27a9a45afaf4.png)
[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting
$7.48
Compact Home Range Hood, Portable USB Desktop Smoke Extractor for Living Room Hot Pot and BBQ Odor Removal
$41.00
Office and Home Computer Cable Management Sleeve - Desktop Data Cord Organizer and PC Wire Collector
$6.50
Linear Bearing
$75.47
Thickened Aluminum Alloy Stainless Steel Floor Wire Raceway - Surface-Mounted Cable Cover Protector, Anti-Crush, Self-Adhesive Invisible Design
$2.13
Kids Foam Stamp Brushes - Mushroom-Tipped Painting Set for Kindergarten Art and Graffiti Projects
$2.38
Heisidike HZL-32 Portable Stone Removal Hook for Car Tire Tread Cleaning
$9.28
Bixilage Cheese Processing Equipment – Curd Fermentation Machine for Stretchy Hand-Pulled Cheese Production Line
$67,900.00
Essential Oil Soap Stamping Machine DIY Stamp Maker Semi-Auto Pneumatic Stampler Small Handmade Soap Equipment
$2,173.00
Inverted Barrel Water Stand - Simple U-Shaped Thickened Holder for Purified Water Buckets with Dispenser Outlet
$21.00
Qingling Pickup 2.8T Diesel Isuzu 4JB1-T1 Engine Turbocharger Pump Assembly
$1,502.00
![[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)
