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E6C06:Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply?

E6C06E6C

Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply?

Direct answer summary (2024-2028 NCVEC pool)

The official correct answer for E6C06 is The input switching threshold is about half the power supply voltage.

The reason is the input switching threshold is about half the power supply voltage. Connect the cause in the question to this direct result instead of memorizing the answer letter.

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