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SN65HVD10: Temperature ratings of Q and non-Q version

Jason Nguyen
Prodigy 10 points
Part Number: SN65HVD10

Tool/software:

I was wondering if I could get more details on the difference between the Q and non-Q part number of the SN65HVD10?  Why is the Q Ta rated to 125C vs the non-Q only rated to 85C?  The recommended operating conditions say it can go to 145C without differentiating the Q and non-Q part, so can they both operate at a Tj of 145C?  Are there any physical differences between the parts?

Also, has there been any changes to the die over the years?  Why did the SN65HVD10D become obsolete?

  • 0
    TI__Guru 58710 points
    Jason Nguyen said:
    I was wondering if I could get more details on the difference between the Q and non-Q part number of the SN65HVD10?  Why is the Q Ta rated to 125C vs the non-Q only rated to 85C?  The recommended operating conditions say it can go to 145C without differentiating the Q and non-Q part, so can they both operate at a Tj of 145C?  Are there any physical differences between the parts?

    I can't find an automotive qualified version of this device. Are you talking about the EP version? There is an FAQ for EP parts here: https://www.ti.com/pdfs/hirel/mltry/ep_q_and_a.pdf

    Jason Nguyen said:
    Why did the SN65HVD10D become obsolete?

    We still sell the D variant, just in the reels instead of the tubes. Denoted as SN65HVD10DR.

    Jason Nguyen said:
    Also, has there been any changes to the die over the years?

    Yes, the device was in an old process technology (150/200mm wafers) we are trying to switch to 300mm wafers. The device was redesigned for the new wafer technology.

    PCN20220324002.1.pdf

    Let me know if you still have questions,

    -Bobby

  • 0 in reply to BOBBY
    Prodigy 10 points

    Thank you!  This is very useful.

    Within the datasheet, there is a table 5 that lists the different part numbers and TA.  It highlights a Q within the part number and SOIC marking.  I was wondering why there is a Q version?  The table 7.3 Recommended Operating Conditions says the IC can withstand 145C Tj and doesn't specify a part number, so I am trying to figure out why there is a Q version of the IC?

    Thank you also for sending the PCN about this device.  I just wanted to confirm my understanding of the PCN.  There will be no change to the part number and the only way we can tell if the chip was manufactured with the 150mm or 300mm wafers is by looking at the assembly site on the label (and perhaps indirectly by the date/lot code, if present).  Each IC will not have identifying labels?  This is not a problem, I just want to be sure I'm looking at the right place to know what part I have.  Am I also right that I cannot order the IC from a particular assembly location (wafer set)?  

  • 0 in reply to Jason Nguyen
    TI__Guru 58710 points
    Jason Nguyen said:
    Thank you also for sending the PCN about this device.  I just wanted to confirm my understanding of the PCN.  There will be no change to the part number and the only way we can tell if the chip was manufactured with the 150mm or 300mm wafers is by looking at the assembly site on the label (and perhaps indirectly by the date/lot code, if present).  Each IC will not have identifying labels?  This is not a problem, I just want to be sure I'm looking at the right place to know what part I have.  Am I also right that I cannot order the IC from a particular assembly location (wafer set)?

    You're correct, you would need to look at the reel or the bag (if you ordered smaller batch) that the parts came in. The top marking of the devices don't tell you if it's the old or the new die (in a sense). One of the new assembly sites is Malaysia, on the top markings if the second line has a K at the end then I believe ( don't remember 100% here) that this marks Malaysia which is strictly for the devices with the new dies since the old dies went to other assembly sites. New and old dies share China assembly so this isn't a guaranteed way to decipher if you happen to get a China assembled part. I don't think you're able to order from a particular site. But if it's very important, we can try to see if it's possible on our backend.

    Jason Nguyen said:
    Within the datasheet, there is a table 5 that lists the different part numbers and TA.  It highlights a Q within the part number and SOIC marking.  I was wondering why there is a Q version?  The table 7.3 Recommended Operating Conditions says the IC can withstand 145C Tj and doesn't specify a part number, so I am trying to figure out why there is a Q version of the IC?

    Interesting. I didn't notice this. So just to be clear, the Q version does not mean it's automotive qualified. Automotive qualified devices require strict qualification procedures and wafer tests. (Usually denoted with a Q-1 in the name and a separate datasheet). 

    I took a look at one of our internal webpages that compares the backend stuff. I ended up seeing almost everything was the same except the final test differed. I suspect the higher temperature devices may have more parameters checked or at higher temperatures (not sure what the tester is doing, the look up system doesn't tell me anything). 

    -Bobby

  • 0 in reply to BOBBY
    Prodigy 10 points

    Thank you Bobby! Your answers were in line with what I was thinking but wanted to confirm. There are no problems, it just helps so I know what to expect.

    As for the temperature difference, I understand your thoughts about automotive qualification and the additional certificates.  I was just hoping to get more insight to the difference. I think you're right that they probably just did some extra testing at the high end or reduced the pass criteria to ensure proper operation at elevated temperatures. Whatever the case, it still means if I want it to perform better at higher temperatures, I should just order the part that says it works better at higher temps. If you find out any more information, it would help scratch my curiosity, but it's not required. You've done a great job answering all of my questions and concerns! Thanks again!