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TCA9617B: connect A side and B side in one star topology

Lilian Chang
Intellectual 1555 points
Part Number: TCA9617B

Hi Team,

As below diagram, when TCA9617 used in star topology, can connect A side with B side together with Master?  could it be problem?  thank you.  

  • 0
    TI__Guru 62920 points
    Hi Lilian,

    Yes, the circuit that you showed would be OK. The case you want to avoid is having multiple B sides connected on the same node, since the "low" level output from one B side would be too high to be detected by the other B sides (this is important in how the device handles bidirectional communication). In this diagram, though, it looks like there is only one B side connected to multiple A sides, so you will not see this problem.

    Regards,
    Max