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TXB0108: Output is not coming up for 2.5V to 3.3V translation

Nanjunda M
Expert 2485 points
Part Number: TXB0108

Hi,

We are using TXB0108PWR in one of the boards where the signal is translating from 2.5V level to 3.3V.

The circuit diagram is as below:

We are driving the Signal SFP_TXdis (Pin 5) from the 2.5V side and on the scope we are able to see the level setting to 0V. But the Output side we have directly connected to connector and we do not have any component connected to the signal. But we see that the signal is at high level on the Pin 16.

Can anyone please let me know what could be the issue ?

 

Thanks & Regards,

Nanjunda M

  • 0
    TI__Mastermind 45815 points
    Hi Nanjunda,

    Could you provide me with those scope shots so I can see the input and output waveforms you are seeing? Please provide both the input and output signals in one scope capture. If you have a four channel scope, it would also be helpful to see OE pin signal as well.