A
Anonymous
Mar 22, 2026
Rating: 5/5
Great for Raspberry Pi
Python library support is excellent. Made expanding my sensor array very straightforward.
Description
TCA9548A 8-Channel I2C Multiplexer Expansion Module Development Board
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Development Boards & Control Boards |
| Origin | - |
| Chip Model | TCA9548A |
| Channel Count | 8 Independent Channels |
| Voltage Range | 2.3V to 5.5V |
| Interface Type | I²C / SMBus |
| Address Pins | A0, A1, A2 |
| Pull-up Resistors | Integrated on Bus Side |
| PCB Dimensions | 45mm x 28mm |
| Mounting Holes | 4 x 3mm Diameter |
| Weight | 12 grams |
| Compatibility | Arduino, Raspberry Pi, ESP32 |
5 reviews
A
Anonymous
Mar 20, 2026
Rating: 5/5
Easy to Integrate
Documentation online is helpful. Got it working in minutes for my university project.
A
Anonymous
Feb 24, 2026
Rating: 5/5
Solved Address Conflicts
Needed this for multiple OLEDs with the same address. Works perfectly with my Raspberry Pi setup.
A
Anonymous
Feb 19, 2026
Rating: 4/5
Good Quality Board
Silkscreen is clear and helpful. Headers need soldering but the PCB quality is solid.
A
Anonymous
Feb 17, 2026
Rating: 5/5
Reliable Switching
No signal loss across channels noticed. Very stable during long-term testing.
5 FAQ
Q: How do I select a specific channel?
A: You select a channel by writing a specific byte value to the multiplexer's register via I2C commands.
Q: What is the function of the reset pin?
A: The RESET pin allows you to reset the device without cycling power. It is active low.
Q: Does it work with 5V logic systems?
A: Yes, the module supports operating voltages from 2.3V to 5.5V, making it compatible with 5V systems.
Q: Can I use multiple multiplexers on one bus?
A: Yes, by configuring the A0, A1, and A2 address pins, you can chain up to 8 multiplexers on the same I2C bus.
Q: Are header pins included in the package?
A: Yes, an unsoldered header strip is included so you can choose straight or right-angle mounting.
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