ben1122
Newbie level 4
I saw this exercise during studying for my test in digital electronics.
At answers, they said that the logical effort at stage 4 (NOR3) is basically 7/3 and the branch (b) at stage 3 is b=3/2.
The branch at stage 3 is obvious - b_3 = 3/2
But the problem is with the logical effort, why isn't the logical effort at stage 4 is:
7/3 and not 14/3?
Note that logical effort is:
LE=g=C_g_GATE / C_g_ref
As C_g_ref of inverter is 3, i.e.:
C_g_ref=3
At answers, they said that the logical effort at stage 4 (NOR3) is basically 7/3 and the branch (b) at stage 3 is b=3/2.
The branch at stage 3 is obvious - b_3 = 3/2
But the problem is with the logical effort, why isn't the logical effort at stage 4 is:
7/3 and not 14/3?
Note that logical effort is:
LE=g=C_g_GATE / C_g_ref
As C_g_ref of inverter is 3, i.e.:
C_g_ref=3
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