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ISO1050 RX / TX in parallel?

Eric Lo63813
Intellectual 450 points
Other Parts Discussed in Thread: ISO1050

Hello,

ISO1050 can be applied to this circuit ?

Thank you~

  • 0
    TI__Mastermind 28265 points

     No you cannot connect both ISO1050 in parallel as you did because the reciver outputs are of the push-pull type and would work against each other.

    Below are 2 solutions shown. The left one allows to select between the 2 outputs and also to disable both outputs. However this requires two control outputs of the MCU.

    The schematic on the right requires only one control output to select between RXD1 and RXD2 but you cannot switch the outputs off.

    The choice is yours.

    Best regards,

    Thomas

  • 0 in reply to Thomas Kugelstadt
    Intellectual 450 points

    Dear Thomas,

    Thanks for your recommend.

    Best regards,

    Eric Lo

  • 0 in reply to Eric Lo63813
    TI__Mastermind 20590 points

    Depending on why you are connecting 2 CAN buses to one controller you may also use a single AND gate to combine the outputs from the 2 CAN buses.  Basically CAN nodes work on the basis of a bitwise AND function.  But the node drawn must become a master node and the others slave nodes or one of the buses could "talk" over the other bus. 

    Best Regards, Scott