Explain the domino logic families with neat diagrams

Domino logic

• Explain the domino logic families with neat diagrams.

• The dynamic-static pair together is called a domino gate.
• The monotonicity problem can be solved by placing a static CMOS inverter between dynamic gates, as shown in figure (a).
• This converts the monotonically falling output into a monotonically rising signal suitable for the next gate, as shown in figure (b).
• A single clock can be used to precharge and evaluate all the logic gates within the chain.
• The dynamic output is monotonically falling during evaluation, so the static inverter output is monotonically rising.
• Therefore, the static inverter is usually a HI-skew gate to favor this rising output. Observe that precharge occurs in parallel, but evaluation occurs sequentially.

Domino gates