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TXS0108E: I2C Communication Issue

JENITT MARIA FRANCIS
Intellectual 420 points

Part Number: TXS0108E

Hi,

I am using TXS01018E to translate I2C lines from 1.8V to 3.3V level.

We observe that the communication is not so consistent. There is no pull up on either on the sides of translator.

If I want to tune the rise time how can I select external pull up resistor?

Regards,

Jenitt Maria francis

  • 0
    TI__Guru* 97676 points
    Hello Jenitt,
    It is recommended to minimize the trace length and capacitance on the 3.3V side of the TXS0108E for your application. If this has already been accomplished, you can also add external pull-up resistors on the 3.3V side to improve rising edge rates. I would recommend starting with 10kohm resistors and working your way down in value.