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Original question:

TXS0104E: TXS0104EDR

TXS0102: TXS0102DCTR

Ilan Hazi71
Prodigy 65 points
Part Number: TXS0102

Hi,

In my board  The TXS0102DCTR is used . the VCCA is connected to 1.8V and  the VCCB is connected to 3.3V.

In the TXS0102DCTR Data sheet it's writing that the VCCI is the supply voltage associated with the input port and the Vih is VCCi-0.4.

1. If the I2C signal in port A is 3.3V does it mean that the VCCi = 3.3V?

2.Whether the  device can work properly in this situation?

thanks

  • 0
    TI__Guru* 97046 points
    Hi Ilan,
    Why is the A supply connected to 1.8V, but the A input is 3.3V? Sounds like you might have your supplies backwards.

    I will ask your translation expert to take a look Monday morning.
  • 0
    TI__Guru 62280 points
    Ilan,

    I would suggest connecting the incoming signal to port B which is referencing Vccb supply.
    as you have pointed out from the datasheet, the input voltage should match supply voltage. The supply voltage of Vccb is 3.3V, and the incoming signal needs to be at 3.3V.