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THVD1454: Min. Receiver Input Impedance when termination resister disable

Koji Ikeda
Expert 6835 points

Part Number: THVD1454

Hello Support team,

Could you provide Min. Receiver Input Impedance when termination resister disable? Datasheet 9.2.1.3 looks to have THVD1454 has 1/8 UL, this looks to show >96kohm, but, I can' find any spec on datasheet.

Thanks,

Koji Ikeda

  • 0
    Guru 323390 points

    The THVD1454 indeed has 1/8 unit load. This is confirmed by the II specification in section 6.7.

  • +1
    TI__Guru 60808 points

    Hi Koji,

    In addition to Clemens' comments...

    THVD1454 is 1/8 unit load which is >96kohm impedance, allowing up to 256 bus nodes. This is shown on the first page underneath the features section, and in the section you listed in 9.2.1.3.

    I think this can be looked at further by checking the bus input current spec in the electrical specifications in the datasheet. 

    Looking at the maximum input current for VI = 12V (the largest ratio), the load seems to be V / I = R = 12V / 110uA = 109.09kohm < 96kohm. 

    Regards,

    Tyler