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TXB0104: TXB0104 for both 1.8V application

Alan Chang
Intellectual 2320 points
Part Number: TXB0104
Other Parts Discussed in Thread: SN74LVC125A, SN74AUC125, SN74AXC4T774

Hi team,

    Is TXB0104 workable at 1.8V on both sides? My customer would like to use it as "isolator", so the pull-up voltage is 1.8V on both side. Does it work, any concern?

By the way, the signal is I2S (audio format, around 100KHz), I think TXB0104 should be fine on the freq., right?

  • 0
    Guru 316690 points

    The datasheet allows this.

    But the TXB is too weak to properly buffer signals. For unidirectional signals, you can use a plain buffer like the SN74LVC125A (40 Mbps) or SN74AUC125 (125 Mbps). For unidirectional signals going in both directions, use a direction-controlled translator like the SN74AXC4T774.