TCA9548A - module with multiplexer I2C - Adafruit 2717

Description

Module with a multiplexer TCA9548A allows you to connect 8 different digital I2C interface to one interface, for each there are separate pins SDx (x busdata line) and SCx (x bus clockline). Working voltage from 3 V to 5 V, the address of the output I2C bus can be changed.

 

 

The product is compatible with Arduino

The manufacturer has prepared auser guide that contains the detailed description of the device and an example of connecting to Arduino.

 

Connection

Outputs are solder fields for soldering goldpin connectors(2.54 mm raster - included in the set). Thanks to them, it is possible to connect the system with thebreakout boardor the main module (e.g.Arduino) usingwires.

 

 

Pin Description VIN Supply voltage from 3 V to 5 V. GND The ground of the system. SCL Clock line of output / I2C bus. SDA Data line of output / I2C bus. RST The reset is activated by low state. By default pulled up to the voltage VIN through the resistor.

A0

A1

A2

Output for changing the address of the main I2C bus. By default pulled up to ground make up the 0x70address. By setting to high state you can change the address range from 0x71 to 0x77. SCx Line delayed-action input / quests / multiplexed tothe I2C bus. SDx Line input / quests / multiplexed to the I2C bus.

 

 

Specification

• Supply voltage: 3 V to 5 V
• Multiplexer: TCA9548A (documentation)
• Connection input: I2C bus
• The possibility of changing the address of input I2C bus from 0x70 to 0x77
• Switchable 8 separate I2C
• Outputs: goldpin connectors 2.54 mm raster (included for self-soldering)
• Board sizes: 31 x 18 x 3 mm
• Weight: approx. 2 g

 

Details in the technical documentation.

 

Useful links

• The website of the manufacturer: Adafruit 2717
• User manual
• Diagram of the module
• Documentation TCA9548A