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Backplane logic and 3v3

Discussion in 'Electronic Design' started by Habib Bouaziz-Viallet, Apr 13, 2011.

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  1. Hi all,

    We are redesigning some 3U/6U Cards inserted in a chassis where
    backplane is specified to be driven by ABT logic (74ABT245/244), the
    problem we are facing is that the FPGA on some cards has 3v3 only IO's
    tolerant.

    Anyone here has got an elegant solution for interfacing +5V backplane
    (TTL ABT) to 3v3 device such as uP or FPGA's ? We have been looking for
    transceivers like 74LVC3245 but after carefully reading the datasheet it
    may not fit the ABT technology especially for driving backplane bus line
    and capacitive loads...

    Thanks in advance for any advice.

    Habib
     
  2. Le 13/04/2011 18:34, Rob Gaddi a écrit :
    houuuuu ! rrright !! thank you so much for the topic i'll see deeper
    those parts tomorrow.

    Habib.
     
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