Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Development Boards & Control Boards |
| Origin | - |
| Chip Model | TCA9548A / PCA9548A |
| Voltage Logic | 3.3V and 5V Compatible |
| Channel Count | 8 Downstream Channels |
| Interface Type | I²C / SMBus |
| Address Pins | A0, A1, A2 (8 Configurable Addresses) |
| Reset Pin | Active LOW Reset |
| Max Clock Frequency | 400 kHz |
| Operating Temperature | -40°C to 85°C |
| Board Dimensions | 32mm x 22mm |
| Weight | 5 grams |
Anonymous
Apr 16, 2026
Rating: 5/5
Reliable I2C switching
Used in a classroom setting for teaching embedded systems. Students found it easy to integrate with the standard Wire library.
Anonymous
Apr 15, 2026
Rating: 5/5
Perfect for sensor arrays
Works great with Arduino. I was able to connect 8 different I2C sensors without any address conflicts. The build quality is solid.
Anonymous
Apr 01, 2026
Rating: 4/5
Good value module
Solid build and functions as expected. Wish the header pins were pre-soldered, but that's a minor inconvenience for the price.
Anonymous
Mar 09, 2026
Rating: 4/5
Works as expected
Does exactly what it should. Documentation could be slightly better regarding pull-up resistor values, but overall happy.
Anonymous
Feb 24, 2026
Rating: 5/5
Solved my address conflict
Needed this for multiple OLED displays and IMUs. The address pins make it easy to stack multiple multiplexers if needed.
Q: What is the maximum current per channel?
A: Please refer to the TCA9548A datasheet, but typically it handles standard I2C signaling currents suitable for logic switching.
Q: Can I daisy chain multiple multiplexers?
A: Yes, you can connect up to 8 of these modules on the same bus by configuring the A0, A1, and A2 address pins differently.
Q: Are pull-up resistors included on the board?
A: Yes, the module includes necessary pull-up resistors for the I2C lines, so you can connect it directly to your controller.
Q: Is this compatible with Raspberry Pi GPIO?
A: Yes, it works perfectly with Raspberry Pi models using the SMBus or I2C GPIO pins and standard Python libraries.
Q: Is this module compatible with 5V logic levels?
A: Yes, the VCC range is 2.3V to 5.5V, so it works safely with both 3.3V and 5V microcontrollers.
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