Bus Voltages for TCA9548A I2C Multiplexer

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JimBoutelle
 
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Bus Voltages for TCA9548A I2C Multiplexer

Post by JimBoutelle »

Hi,
I'd like to use the TCA9548A I2C Multiplexer for a system with a 5V master and 3.3V or 5V devices. Am I correct in thinking that it is as easy as supplying the Vin with 5V for the master side, and then connecting pull-up resistors for each of the other devices to either 5V or 3.3V as needed?

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adafruit_support_bill
 
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Re: Bus Voltages for TCA9548A I2C Multiplexer

Post by adafruit_support_bill »

That is correct. There are no on-board pullups for any of the output signals. So you can pull them up to different voltages as required.

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