Question

Draw the transistor level circuit schematic and truth table of a two-input

NAND gate that uses dynamic logic?

Answer 1

A two-input NAND gate using dynamic logic would include a precharge and evaluate phase in its schematic, and its truth table shows an output of high (1) unless both inputs are high (1), which results in a low (0) output.

Step-by-step explanation:

The question pertains to the design of a two-input NAND gate using dynamic logic. The schematic of a dynamic logic NAND gate typically features a precharge phase and an evaluate phase. In the precharge phase, the output is charged to a high state, while in the evaluate phase, the output may be discharged to a low state depending on the input values. The truth table for a two-input NAND gate will show an output of 0 only when both inputs are 1; otherwise, the output is 1.

The transistor level circuit schematic would have PMOS transistors connected to VDD for precharging the output and NMOS transistors in series for the evaluate path, where the inputs are connected to the gates of the NMOS transistors.

The truth table for this NAND gate is as follows:

Input AInput BOutput001011101110