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TXS0102: How to detect direction

Hideki Hayashi1
Expert 8560 points
Part Number: TXS0102


Hi team,

TXS0102 is a swithc type level shifter. If I understand correctly, the TXS0102 detects pulse with pulse duration in Timing Requirements at either port, then the port which detects the pulse become input, right?

Best regards,

Hayashi

  • +1
    Guru 317750 points

    The TXS is a passive switch. If either A or B pin is driven low, then the gate-to-source voltage at the pass transistor is high enough that the transistor closes, and that the low voltage is passed through to the other side. If the voltage at both sides are high, then the transistor is open, and the voltage at the pins is determined only by the pull-up resistors.

    The one-shot accelerators detect the beginning of a rising edge at the pin, and short the pull-up resistor on the other side to speed up the rising edge there.

    Also see A Guide to Voltage Translation With TXS-Type Translators.