Micro controller power up reset
At first I thought there were 3 errors and then considered what the spec should be.

Either way, it looks wrong because there is no base DC pull down to 0V so cap. current makes it have a hair trigger on Vc spikes via diode capacitance .

If you put 30pF across each cap and make input R=100 and 1M to R to ground, you might see a 10us reset pulse. but act like a glitch detector and not a good PoR.


ok for logic but uC usually expect 100ms
if used for uC reset then reverse top diode and swap bottom R and C.


then it will protect Vbe and ignore input glitches with high in, low out for base RC time constant to drop to 0.5V from input high to guarantee output high after >100ms