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SN74LV08A: Ultrasonic microscopy revealed delamination.

Poh Kok Keng
Genius 5262 points
Part Number: SN74LV08A

Tool/software:

hi,

Ultrasonic microscopy result:

We engaged an external lab to look at the defective components.
Result: Ultrasonic microscopy revealed delamination.
 
Red color arrow – delamination
Leadframe (Abb.9) and paddle (Abb.10)
Measurement:
 
All measurements were made with the following equipment:
 
·        R&S HMP2020 Powersupply (940-0878-006)
·        R&S RTB2004 Oscilloscope (940-1139-001)
 
 
Above picture shows a measurement of IC35, with the following signals:
            Yellow: trigger signal
            Green: IC35_Pin3 (output)
            Orange: IC35_Pin2 (input)
            Blue: IC35_Pin1 (input)
Since this IC is an AND-gate the output should switch to zero after Pin2 changed to zero, which it doesn’t do.
 End customer try to file a FA request but the PIC ask me to search for advice from E2E to confirm. 
Please advice.
Best Regards,
KPK
  • 0
    TI__Genius 17470 points

    Hi KPK,

    Yes, the part appears to not be working. Please send to an FQE or let me know what else you need from my end to file the FA request. You can also share your schematic here for me to look at if you want.

    Best,

    Malcolm