> Even a short for a nanosecond can cause irreversible damage.
Jumped out at me. 1 nanosecond is 10-9 second, assuming two switching elements with a 10 Ohm RDSON connected to the rails (probably on the low side, such small elements usually have a rather high ON resistance) that's a 20 Ohm series resistance on 3.3V causing assuming an instantaneous rise (which it won't be) which leaves you with about 0.5 nano-Joule of energy spread out over two locations. That's an extremely small amount of energy to be able to cause damage, surprising!
Hard to say what the true damage potential is like, because the numbers become unintuitive to work with at such small scales. The feature sizes we're talking about are smaller than most known viruses, so it wouldn't take much heat to damage them. Be interesting to go through the math.
Jumped out at me. 1 nanosecond is 10-9 second, assuming two switching elements with a 10 Ohm RDSON connected to the rails (probably on the low side, such small elements usually have a rather high ON resistance) that's a 20 Ohm series resistance on 3.3V causing assuming an instantaneous rise (which it won't be) which leaves you with about 0.5 nano-Joule of energy spread out over two locations. That's an extremely small amount of energy to be able to cause damage, surprising!