TCA9548 1xI2C master - 8xI2C slave expander

Product detailed description

The TCA9548A has eight bidirectional translators that can be controlled via the ^I2Cbus. One master SCL/SDA channel is translated into eight slave ^I2Cchannels. Any single SCn/SDn channel or combination of channels can be selected, as determined by the contents of the programmable control register. These downstream channels can be used to resolve slave address conflicts. For example, if an application requires eight identical digital temperature sensors, one sensor can be connected to each channel: 0-7.
The master can reset the TCA9548A in the event of a delay or other incorrect operation by bringing the RESET input low. Similarly, a power-on reset deselects all channels and initializes the ^I2C/SMBusstate machine.

Its use is quite simple: the multiplexer itself is at I2C address 0x70 (but can be modified from 0x70 to 0x77) and you simply write one byte with the desired multiplexed output number to this port and bam - any future ^I2Cpackets will be sent to this port. Theoretically, you could have 8 of these multiplexers at each of the addresses 0x70-0x77 and could control 64 ^I2Cchannels.

Specifications:

• Supply voltage: 1.65-5.5V
• Current consumption: approx. 100mA
• I/O voltage level: 5V tolerant
• Frequency I ² C: 400kHz
• Module dimensions: 31,6x21,6mm

Delivery components:

• 1pc TCA9548 ^1xI2Cmaster - ^8xI2Cslave expander

Remark:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustration purposes only and may sometimes differ from the actual appearance of the item. However, this does not change its basic properties.