Hello,
Often, when I want to find a datasheet, I go to www.digikey.com.
Search for the part number and, more often than not, there will be a capital "D" at the far right.
Click on that and you will see datasheets and often supporting documents (i.e. errata, app notes).
Anyway, it works for me.
Sometimes, if I can't find what I want there, I try the Newark website - www.newarkinone.com. Their site is a bit sluggish in comparison though.
Regards.
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