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ESDS314: 2.5G EtherNET

Brian Wang0928
Genius 12730 points
Part Number: ESDS314
Other Parts Discussed in Thread: ESDS304, ESD204

Is ESDS314 able to protect 2.5Gbps EtherNET PHY? or what alternative solution? thanks,. 

Regards

Brian 

  • 0
    TI__Expert 4060 points

    Hi Brian, 

    I wouldn't recommend using ESDS314 to protect a 2.5 Gbps EtherNet PHY. I have provided a comparison table below with similar options to ESDS314. 

    ESDS314 ESDS304 ESD204
    Working Voltage (V) 3.6 3.6 3.6
    Polarity Unidirectional Unidirectional Bidirectional
    Channel Count 4 4 4
    Capacitance (pF) 4.5 2.3 0.55
    IEC 61000-4-2 Contact (kV) 30 30 30
    IEC 61000-4-5 (A) 25 12 5.5
    Clamping Voltage (V) 5.5 6 8.2
    Package SOT-23 SOT-23 USON
    Signal Speeds  up to 1.8 Gbps up to 3 Gbps up to 10 Gbps

    Please let me know if you have questions on the recommendations or comments. 

    Best Regards,

    McKenzie Eaker

  • 0 in reply to McKenzie Eaker
    TI__Genius 12730 points

    thanks. I have a little confused that data rate you listed is different to datasheet. 

  • +1 in reply to Brian Wang0928
    TI__Expert 4060 points

    Hi Brian, 

    My apologies for the confusion. If we don't specifically state the speeds then another way we determine the data rate is based on the insertion loss graph. The general rule of thumb is that we are able to support frequencies up to -3 db. Then using frequency = data rate /2, we are able to determine the data rate. This is what I had used when giving you the data rates. 

    The image below is the insertion loss graph from ESD204. Based on the graph, we are able to support frequencies up to 5 GHz which translates to 10 Gbps. Hopefully this makes sense and clears up the confusion. 

    Please let me know if you have any questions or comments on this. 

    Best Regards, 

    McKenzie