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TMUX1204: Using TMUX1204 for eARC implementation

Christina Lim
Expert 5725 points
Part Number: TMUX1204
Other Parts Discussed in Thread: SN74CB3Q3253, CD74HC4052

Hi,

My customer is planning to use 2x TMUX1204 for eARC implementation.

Below are the exact of the eARC specification, may I know if there may be any concern? Currently we are using TMUX1204 for ARC implementation which is slower in data bandwidth.

eARC spec.docx

Thanks,

Christina

 

  • 0
    TI__Expert 5660 points

    Hi Christina,

    Thanks for sending that information.

    It looks like TMUX1204 does not have the bandwidth to support eARC at its maximum data rate.

    Since you are using two 4:1 switches, a dual 4:1 with higher bandwidth might be a better fit. Please see the comparison of SN74CB3Q3253 and CD74HC4052 below:

    We typically recommend the bandwidth of the switch be at least 2-3 times the max signal bandwidth. Take note that the bandwidth of CD74HC4052 may not be high enough for your application. SN74CB3Q3253 has a higher bandwidth with a max supply voltage rating of 3.3V.

    Regards,

    Kate

  • 0
    TI__Expert 5660 points

    Hi Christina,

    Just checking in that your question was answered. I am marking the case resolved, but please don't hesitate to reach out if you have any more questions!

    Regards,

    Kate