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Which inefficiency arises when increasing CMOS inverter frequency?

A)Dynamic power dissipation increases heavily
B)Static power dissipation plateaus gradually
C)Short-channel effects become irrelevant
D)Threshold voltage variation disappears entirely

💡 Explanation

Increased frequency requires more rapid transitions, leading to higher dynamic power dissipation from the gate capacitance needing frequent charging and discharging. This is caused by capacitive load on transistors, therefore dynamic power loss becomes significant, rather than static currents affecting inefficiency.

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