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Original question:

TLK2711-SP: Datasheet incomplet

TLK2711-SP: Maximum current rating of WizardLink Output signals

Michael Bolt46
Prodigy 90 points
Part Number: TLK2711-SP

During testing, I have inadvertently connected both True and Complement WizardLink output signals (DOUTTXN and DOUTTXP) to a 50-ohm load to 0 V, instead of the required common-mode voltage.

The device specification does not give "absolute maximum" figures for these data lines. Will I have caused stress on the device driver outputs, potentially affecting the device reliability?

  • 0
    TI__Mastermind 19235 points

    Hi,

    This is not a valid output configuration. I would recommend to modify the board by removing the 50-ohm loads.

    Cordially,

    Rodrigo Natal

    HSSC Applications Engineer

  • 0 in reply to Rodrigo Natal
    Prodigy 90 points

    Hi Rodrigo,

    I appreciate that this is not a valid output configuration. The loads were attached in error during test, and have since been removed

    As this is a high-reliability space application, I need to know if the reliability of the TLK2711 may have been affected by this incorrect configuration.

    As I said in my original post, the device data sheet does not provide any information on the impact of this configuration.

    "Absolute Maximum" current outputs (as is normally specified on many devices) would be useful.

    Thank you for your attention,

    Regards,

    Michael

  • 0 in reply to Michael Bolt46
    TI__Mastermind 19235 points

    Hi,

    I don't expect any actual damage to the device to have occurred.

    Cordially,

    Rodrigo Natal

    HSSC Applications Engineer