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SN65LVCP114: 10 GHz Signal Repeater: Availability, SFI Support, 10GBASE-CR/SR Compliance

Deep Raj Khadka
Prodigy 30 points
Part Number: SN65LVCP114
Other Parts Discussed in Thread: DS100MB203

Tool/software:

We are using this component in designing a system that:

  • Repeats an input signal to two outputs. (this device has 4 ports to support quad lanes)
  • Target is to be able to repeat 10Ghz signals.

Few things I wanted to know.

1. How long is the foretasted availability of the component (we are looking for at least next 10 years)

2. Does this device support SFI signal (10 Gbps).

3. while checking some forums here, it looks like the buffer is not suitable for 10GBASE CR standard?  --> passive DAC cable

But it complies with the SR standard , is this observation correct?

Some forum Reference

e2e.ti.com/.../sn65lvcp114-sfi-interface

  • 0
    TI__Guru* 93670 points

    Hi Raj,

    SN65LVCP114 does support SFI. The E2E post you referred to points to over-equalization by the device in a case there a short channel on the input of the part. Suggestion is to use s-parameter of this part along with your channel s-parameter to do simulation and judge output eye diagram.

    There is another part that may be of interest for your application as well. You can check DS100MB203. This device has the same functionality. Additionally this part has IBIS-AMI model so you can use for a more extensive simulation purpose.

    Lastly, you maybe able to use evaluation board of these parts and check performance using your actual transmission or cable that you plan to use.

    Regards, Nasser

  • 0 in reply to Nasser Mohammadi
    Prodigy 30 points

    Hi Nasser,

    Thanks for the quick response and the recommendation.

    Regarding DS100MB203, I see (in table 2, page 16 of datasheet) that the default EQ gain setting for high frequency starts with 5.3db, SN65LVCP114 seems to have more configurable options in this case (start with minimum 1.3dB ).

    Non technical question (supply related): Where can i get the component availability (lifetime/ EOL) information. 

    Regards

    Deep

  • 0 in reply to Deep Raj Khadka
    TI__Guru* 93670 points

    Hi Deep,

    You can decide to go with either of these parts. 

    As it relates to lifetime/EOL issue, you can definitely discuss this with your TI sales representative. They have far more visibility in supply issue for these parts than i. Having said this, these parts are not designated as EOL. When this happens, there is TI's obsolescence policy that applies. Here is this policy: 

    “TI’s product withdrawal/discontinuance process complies with J-STD-048. Our company makes an effort to not obsolete products out of convenience. In addition, our standard obsolescence withdrawal schedule provides a longer lead time than the industry standard. Our schedule allows 12 months for the last order and an additional six months to take final delivery of obsolete products. In rare circumstances, an accelerated withdrawal schedule may be necessary. In such cases, we will communicate to affected customers the last time buy and final delivery dates.

    Product obsolescence notifications include:

    • Detailed description
    • PCN tracking number
    • TI contact information
    • Last order date (no more than 12 months after notification)
    • Last delivery date (up to six months after order period ends)
    • Product identification (affected products)
    • Identification of replacement product, if applicable

     

    Additional information on Product withdrawal/discontinuance can be found in TI’s General Quality Guidelines.

    “

    Regards, Nasser

  • 0 in reply to Nasser Mohammadi
    Prodigy 30 points

    Hi Nasser,

    Thanks for clear explanation. I will keep this thread open for next few weeks for technical questions if they pop up during design. 

    Regards

    Deep

  • 0 in reply to Nasser Mohammadi
    Prodigy 30 points

    Hello Nasser,
    The datasheet mentions the propagation delay of 200ps. It only states the typical value, would it be possible to get the minimum/maximum values as well?
    Regards
    Deep

  • 0 in reply to Deep Raj Khadka
    TI__Genius 9209 points

    Hi Deep,

    Unfortunately, what is listed in the datasheet is based on all the data we have for propagation delay.

    Best,

    Nick

  • 0 in reply to Nick Peabody
    Prodigy 30 points

    Hello Nick, 
    Can we get access to PCB file of the evaluation board (SN65LVCP114 Evaluation Module (EVM)?

    Regards
    Deep

  • 0 in reply to Deep Raj Khadka
    TI__Genius 9209 points

    Hi Deep,

    Apologies, but we no longer have access to these files. You can review screenshots of the layout in the EVM user's guide: https://www.ti.com/lit/ug/sllu160/sllu160.pdf

    Best Regards,

    Nick