Twenty Log
Well-known member
This is an interesting conundrum... Still wrapping my head around this concept for debouncing...
The Art of Electronics states that it is always OK to short the output to the input of a noninverting gate for small amount of time... in this case it is the propagation delay...
This all seems cool for the transient state....
perhaps the steady state is what is bothering me, as for logic 1 debounce operation, let's say, Voh is probably lower than the +5V rail that the switch is sitting at in the steady state, and thusly is the output transistor at Voh is shorted to the rail (which maybe it is just bypassing the output transistor at this point?)
I wonder of self heating during the short propagation delay and if that contributes to gate threshold drift, or premature derating of the gate?
Anyone use this topology? I am wondering of a series resistance for belt and suspenders?
The Art of Electronics states that it is always OK to short the output to the input of a noninverting gate for small amount of time... in this case it is the propagation delay...
This all seems cool for the transient state....
perhaps the steady state is what is bothering me, as for logic 1 debounce operation, let's say, Voh is probably lower than the +5V rail that the switch is sitting at in the steady state, and thusly is the output transistor at Voh is shorted to the rail (which maybe it is just bypassing the output transistor at this point?)
I wonder of self heating during the short propagation delay and if that contributes to gate threshold drift, or premature derating of the gate?
Anyone use this topology? I am wondering of a series resistance for belt and suspenders?