Before revision: Derivation of delay in a logic gate Delay is expressed in terms of a basic delay unit, τ = 3RC, the delay of an inverter driving an identical inverter with no parasitic capacitance; the unitless number associated with this is known as the normalized delay.
After revision: It is the ratio of input capacitance of skewed gate to input capacitance of unskwed capacitanceDerivation of delay in a logic gate Delay is expressed in terms of a basic delay unit, τ = 3RC, the delay of an inverter driving an identical inverter with no parasitic capacitance; the unitless number associated with this is known as the normalized delay.