1Pc TCA9548A I2C Multiplexer Module 8-Channel I2C Switch Board with Reset Function

The TCA9548A I2C multiplexer expansion module is designed to expand a single I2C bus into 8 independent I2C channels, making it an ideal solution for connecting multiple I2C devices with the same address. Each channel is controlled through the I2C bus, allowing the system controller to select any individual SCn/SDn channel or a combination of channels according to the programmable control register. The default I2C address is 0x70, and it can be configured within the range of 0x70 to 0x77. In theory, up to 8 TCA9548A multiplexers can be used on the same I2C bus, and each multiplexer can connect up to 8 devices with the same address, allowing up to 64 same-address I2C devices to operate on a single I2C port.

Product

Specifications

Product Name: TCA9548A Multiplexer
Expansion Module Function: 8-channel I2C switch
Main Chip: TCA9548A
Operating Voltage: 1.65V 5.5V
IC Clock Frequency: 0400 kHz
Default I2C Address: 0x70
Configurable Address Range: 0x700x77 Number of
I2C Channels: 8 bidirectional I2C switch channels
Compatible Bus: I2C bus and
SMBus Reset Function: Low-active /RESET input
Voltage Level Support: 1.8V, 2.5V, 3.3V, and 5V bus voltages
I/O Pin Rating: All I/O pins are rated for 5V
Operating Temperature Range: -40°C to 85°C
Board Dimensions: 31.5 mm × 21.4 mm
Mounting Holes: Two M3 mounting holes How It Works The TCA9548A works as an I2C-controlled switch. The main controller communicates with the module using the selected module address, typically 0x70 by default. A...