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DS90LV031A: Checking on possible counterfeit part for DS90LV031ATMTC/NOPB

Tyler Anderson
Prodigy 10 points
Part Number: DS90LV031A

I received a batch of PCBs that use the DS90LV031ATMTC/NOPB (Quad LVDS drivers). The parts are consuming ~400mA at 3.3V when receiving 100Mbps PRBS, which is more than x10 my expectation. Their free air temperature is reaching ~90C. The PRBS pattern does seem to get reliability transmitted through the chip.  

I'd like to verify that these chips are genuine, not counterfeit. A graphic with the part markings are attached. They read: 

9BALH6U

DS90LV

031AT

The first line is preceded by the National Semiconductor symbol.

Does anyone have a way to help me know if this part is legit? 

Thanks,

Tyler

  • 0
    TI__Guru 50886 points

    Hi Tyler,

    The devices should have TI's logo similar to the below description and would recommend purchasing from TI.com while further reaching out to your sales representative, thanks.                         

         +-----------------+        \T/ = TI LOGO                                      

         !  DS90LV     !         YM  = YEAR/MONTH (in this case 9B for November 2019)                                   

         !   \T/YMSG3  !         S  = ASSY SITE                                    

         !   LLLL           !         LLLL  = LOT TRACE CODE                               

         +-----------------+                                                                                                                          

    Best Regards,

    Michael.