Quick question here - are there any downsides to building a 3 input AND gate like this?
simulate this circuit – Schematic created using CircuitLab
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Sign up to join this communityQuick question here - are there any downsides to building a 3 input AND gate like this?
simulate this circuit – Schematic created using CircuitLab
simulate this circuit – Schematic created using CircuitLab
Figure 1. One simple test.
The circuit isn't very good.
The big problem with this is that your Y2 output can't drive another AND gate properly as the logic levels are deteriorating with each additional gate.
Figure 2. Another simple test.
3 X Inverter + NOR
(A' + B' + C')' = A'' * B'' * C'' = A * B * C
This circuit won't suffer the voltage drop issue, you can have many inputs.
simulate this circuit – Schematic created using CircuitLab