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SN74AVC2T245RSWR - data pins

Michael Cameron
Prodigy 10 points

i have a design that is setup the same as the reference design supplied in section 9 of the datasheet. With DIR1 held HIGH, data from A is passed to B.


My design has a requirement to be able to pass data from B to A as well. DIR1 is currently permanently pulled HIGH

Do i need to toggle this pin to change the data direction or will data pass in both directions with pin DIR1 pulled HIGH

  • 0
    TI__Mastermind 30545 points

    Hello Michael,

    The DIR1 pin will have to pulled low to pass data from B1 to A1. You cannot pass data from B1 to A1 with DIR1 permanently pulled high.

    With DIR1 pulled high and DIR2 pulled low, you can pass data from A1 to B1 and from B2 to A2.