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TPD1E0B04: Ethernet, USB 2.0

Iain Davis1
Prodigy 245 points
Part Number: TPD1E0B04

Hello,

We're already using TPD1E0B04 on the board for 3G-SDI lines and USB 3.0 - could these also be used on 1Gbps Ethernet and/or USB 2.0?

Thank you in advance,

Iain

  • 0
    TI__Expert 8476 points

    Hello Iain,

    Yes, this part has ultra low capacitance at 0.13 pF, so it can be used for 1 Gbps ethernet. It will also support USB 2.0 as well.

    Regards,

    Matt Smith

  • 0 in reply to Matt Smith3
    Prodigy 245 points

    Hi Matt,

    Thank you for your response, quite helpful.

    I'm curious about the use of a Bidirectional part (vs. unidirectional) - Most 'typical' applications utilize a unidirectional device. Any insight you could lend?

    Thank you,

    Iain

  • 0 in reply to Iain Davis1
    TI__Expert 8476 points

    Hi Iain,

    When using a unidirectional part, you can only protect lines that have a normal operating voltages between 0 V and + Vrwm. If the line experiences any negative voltages, the diode will start conducting and start pulling current away. 

    When using a a bidirectional part, you are able to have operating voltages between - Vrwm and + Vrwm. A good example of this would be an AC coupled signal. 

    If your signals go between positive and negative voltages, I would use a bidirectional part. Otherwise, you can get by with a unidirectional part. 

     

    Regards,

    Matt Smith