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Original question:

TXB0108: SD card SPI working intermittently - MISO line

TXB0108: Is there the minimum time to change signal direction?

Kazuya Nakai59
Guru 21505 points
Part Number: TXB0108

 One of my customers is evaluating TXB0108 for their next products.

 They want to know what the minimum time of pulling up/pulling down to change signal direction of TXB0108 is.

  Is there the minimum time to change signal direction?

 Your reply would be appreciated.

 Best regards,

 Kazuya Nakai.

  • 0
    TI__Guru 61690 points
    Kazuya san,

    There is no minimum for signal change timing. It will be based on the system design to avoid the bus contention as much as possible.
    You could also refer to the datasheet timing specs tdis and ten referring to the OE pin assertion to A/B timing.
    With this, it will ensure that the device is disabled during direction change scenarios.