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TXB0102: TXB0102 output questions

Kailyn Chen
Genius 9560 points
Part Number: TXB0102
Other Parts Discussed in Thread: 2N7001T

Hi,

 When using TXB0102  to realize 1.8V to 3.3V level translation, the input signal is 500KHz square wave, but the output is distortion, please refer to the input and output waveform. The application is SPI not open-drain. Could you please give me some advise?

Best regards

Kailyn

  • 0
    TI__Guru* 96681 points
    Hi Kailyn,
    My first guess would be that your line has a fairly heavy capacitive load, but I will notify our team's translation expert and ask him to take a look. He probably won't get back to you until tomorrow since today is a holiday in the US.
  • 0
    TI__Guru 57390 points
    I would encourage the newly released unidirectional single channel low cost 2N7001T device for this application for 1.8 to 3.3V translation.
    it is suitable for SPI interface.
    The TXB doesnt have enough drive strength to overcome high loading on the traces.

    There is another e2e post similiar to this, are they linked to the same issue? If yes, we can close one of them.
    e2e.ti.com/.../692902