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ULQ2003A: Screening Question

sdaf sdga
Prodigy 80 points
Part Number: ULQ2003A

My company would like to pursue screening from TI for DS2003 replacement parts if possible.  Would it be possible to get the ULQ2003AQ part screened for operation up to 60V from TI, or get the SN75468D part screened for operation between -40C and 125C?

ULQ2003AQ screening is most preferred.

SN75468D screening is least preferred.

  • 0
    TI__Genius 15780 points

    Hi sdaf sdga,

    The SN75468D is already rated for operation between -40C and 125C with an abs max junction temperature at 150C. Is there a reason this device wouldn't work?

    Thanks,

    Alek Kaknevicius

  • 0 in reply to Aleksandras_Kaknevicius
    Prodigy 80 points
    Hi Alek,

    The concern we have with SN75468D is related to page "Addendum-Page 1" (.pdf page 16) where it is suggested that the operating temperature for SN75468D is 0C to 70C. We are concerned that the part would operate from -40C to 125C, but the datasheet parameters may only be guaranteed from 0C to 70C.

    However, if you could verify SN75468D operates / is specified to operate from -40C to 125C, SN75468D would work for us, and we would have no need for screening parts.

    Thanks for your help.
  • 0 in reply to sdaf sdga
    TI__Genius 15780 points

    Hi sdaf sdga,

    The SN75468D was designed and is guaranteed with a max junction temperature of 125C. The ambient temperature rating in the addendum is the ambient temperature where we define some of the specs, like the leakage currents. As long as the junction temperature is kept below 125C (even with a higher ambient temperature than 70C), then the part will work normally. However, you may end up with a bit higher leakage currents at higher temperatures.

    Thanks,

    Alek Kaknevicius