Suppose a unit inverter with three units of input capacitance has unit drive. a) What is the
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Question:
Suppose a unit inverter with three units of input capacitance has unit drive.
a) What is the drive of a 4x inverter?
b) What is the drive of a 2-input NAND gate with three units of input capacitance?
Refer to equation 4.24 in the textbook to recall that if a unit inverter is defined to have one unit of input capacitance then the drive of the gate is,
x = Cin/g
Here, Cin is the input capacitance, and g is the logical effort of the gate.
Consider a unit inverter with 3 units of Cin and a single unit of x.
Recall that an inverter has a logical effort of 1.
Therefore, modify the equation for this inverter.
x = Cin/3g
Here, Cin is divided by 3 to match the unit drive value.
(a)
Consider a 4x inverter.
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