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Old 08-14-2019, 07:48 PM
gotpasswords is offline
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Join Date: Mar 1999
Location: San Francisco area
Posts: 16,375
Originally Posted by Leaffan
For about 7 years of my career I was involved in semiconductor qualification, manufacturing, test, and failure analysis. I've seen quite a number of blown I/Os due to electrical over-stress.
Remember the "good old days" of 7400-series TTL chips? Those rascals had an insanely tight Vcc tolerance. Five volts, plus or minus, well, pretty much nothing - 5.5v would kill them.