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TCA9545A: 3.3V to 2.5V level translation

Patrick Chen
Mastermind 8875 points
Part Number: TCA9545A

Hello

         if main I2C is 3.3V, slave 4 ch is 2.5V. Could TCA9545A support this voltage translation? Thank you. 

BR

Patrick

  • 0
    TI__Guru 73181 points

    Hey Patrick,

    That will work.

    You can see below your lowest value pass FET value is 2.5V which means TCA9545A requires a Vcc of ~3.7V or less in order to support level shifting. You can either supply TCA9545A with Vcc=2.5V or 3.3V and it will work.

    Thanks,

    -Bobby