Explain NAND and NOR structures, their sizing, and how they vary depending on loads.

Question

Accepted Answer

NAND and NOR structures are logic gates used in digital circuits. Their sizing varies based on the loads they need to drive.

NAND and NOR gates are fundamental building blocks in digital circuit design.
The size of NAND and NOR gates is determined by the number of inputs and the loads they need to drive.
For NAND gates, the size of the transistors in the pull-up network is increased to handle larger loads.
For NOR gates, the size of the transistors in the pull-down network is increased to handle larger loads.
Sizing of NAND and NOR gates affects their propagation delay and power consumption.
Example: A 2-input NAND gate with a larger load might have larger transistors in the pull-up network compared to a gate with a smaller load.

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