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$59.99
TECNOIOT 5pcs tca9548a 8 Channel i2c IIc Multi-Channel expansión Board 1-to-8 tca9548 — image 1
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TECNOIOT 5pcs tca9548a 8 Channel i2c IIc Multi-Channel expansión Board 1-to-8 tca9548

$59.99
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About this item
  • 【TCA9548】TCA9548A 8 Channel I2C IIC Multi-channel Expansion Board 1-to-8 TCA9548 8-Way
  • 【Compatible】The adapter is connected to an I2C device with multiple identical addresses on the same I2C port on the main control board for normal communication and use. Compatible with IIC bus and system management bus (SMBus), active low reset input, support for hot insertion, low standby current, no glitch during power-up, support for voltages between 1.8V, 2.5V, 3.3V and 5V buses Level shifting.
  • 【Design compact】There are 8 I2C interfaces on one expander, and there are eight bidirectional transfer switches that can be controlled by I2C bus. This means that after 1 expander is transferred, 8 identical addresses can be connected to the same I2C port. The device is also in normal use. The default address of this expander is 0x70, the address can be changed, and can be set within 0x70~0x77 according to your needs.
  • 【Description】The switch has a turn-on gate so that the VCC pin can be used to limit the maximum high voltage through the TCA9548A. Limiting the maximum high voltage allows different bus voltages to be used on each channel pair so that 1.8V, 2.5V or 3.3V components can communicate with 5V components without any additional protection, for each channel, external pull-up resistors The device pulls up the bus voltage to the desired voltage level. All I/O pins are 5V withstand voltage.
  • 【High performance】In theory, 8 expanders can be cascaded in the address of 0x70~0x77, and each expander can connect 8 devices with the same address. This realizes the same I2C port and connects 64 devices with the same address and uses them normally. Very powerful!
Product description

X5pcs TCA9548A 8 Channel I2C IIC Multi-channel Expansion Board 1-to-8 TCA9548 8-Way The adapter is connected to an I2C device with multiple identical addresses on the same I2C port on the main control board for normal communication and use. There are 8 I2C interfaces on one expander, and there are eight bidirectional transfer switches that can be controlled by I2C bus. This means that after 1 expander is transferred, 8 identical addresses can be connected to the same I2C port. The device is also in normal use. The default address of this expander is 0x70, the address can be changed, and can be set within 0x70~0x77 according to your needs. In theory, 8 expanders can be cascaded in the address of 0x70~0x77, and each expander can connect 8 devices with the same address. This realizes the same I2C port and connects 64 devices with the same address and uses them normally. Very powerful! Compatible with IIC bus and system management bus (SMBus), active low reset input, support for hot insertion, low standby current, no glitch during power-up, support for voltages between 1.8V, 2.5V, 3.3V and 5V nozzles level shifting. Depending on the contents of the programmable control registers, any single SCn/SDn channel or combination of channels can be selected. When a timeout or other improper operation occurs, the system master can reset the TCA9548A by asserting the /RESET input low. Similarly, a power-on reset deselects all channels and initializes the I2C/SMBus state machine. Reset and initialization can also be achieved by asserting /RESET and there is no need to power down the part. Package Contains: 5pcs x TCA9548A 8 Channel I2C IIC Multi-channel Expansion Board.

Product details
Brand
TECNOIOT
Manufacturer
TECNOIOT
Colour
purple
Model number
A401-TCA9548-372-5PCS
Part number
A401-TCA9548-372-5PCS
EAN
7426925371736

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10 Trustpilot reviews total, with 2 shown at a time.

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Excellent
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Sigalit
🇮🇱 · January 2026

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

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Verified buyer
🇦🇺 · November 2025

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

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