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SN74AVC16T245: About the input and output of SN74AVC16T245

Cris Qi
Intellectual 835 points
Part Number: SN74AVC16T245


Dears,

 OE effective cases, the direction of the DIR control for A - B

1, whether the input is high-impedance can set up A bus?

2, if can, A bus under the condition of high-impedance, B bus output level is high, low or high-impedance?

  • 0
    TI__Intellectual 2100 points

    Hey Cris,

    It's not clear what you are asking but this is an active low device for the enable. When OE is low, then the device is active and then there are two possible operational modes:

    1) DIR is low, it sends the B channels into high-z so they function as inputs and data transmission goes from B to A. A channels will be low impedance outputs.

    2) Alternatively, if DIR is held high then A channels are sent into high-z and function as inputs so that data transmission is from A to B. B channels will be low impedance outputs.

    See the table below for more:

    If this answered your question, please verify the answer using the green button below! If you still have more questions, then just send them along and I'll be happy to answer them for you. 

    Best Regards,

    Nick