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SN75DP139 - About “Rvsadj” value

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Guru 21045 points
Other Parts Discussed in Thread: SN75DP139

Hi,

 

Our customer would like to use "Rvsadj = 7.5kohm" for make VOD(Differential Output Voltage) smaller.

But, "Rvsajd=7.5kohm" is not recommended operating conditions.

(Could you please refer to “TMDS output swing voltage bias resistor of datasheet page11” & “Figure24 of page22”)

Does this case adversely affect SN75DP139?

(Example; false operation etc..)

 

Regards,

Kanemaru

  • 0
    TI__Mastermind 36085 points

    Hello Hideto,

       As is stated in the note of the page 11, values above 4KOhms  may may result as a non-compliant TMDS output voltage swing, that's it. greater values for RVsadj will not cause any malfunction or damage to the SN75DP139. However as a result of  the possible non-compliant TMDS output voltage swing, your implementation may be facing interoperability issues.

    Regards,

    Diego.

  • 0 in reply to Diego Cortes
    Guru 21045 points

    Hi Diego,

     

    Thank you for the information.

    Ｉ understood. thank you very much.

     

    Regards,

    Kanemaru