Delay
Path delay:
It is also known as pin to pin delay.
It is the delay from input pin of cell to outpin of the cell.
Net delay:
It is also known as wire delay or extrinsic delay.
It is the difference between time a signal is first applied to net & the time it reaches other devices connected to that net.
Propagation delay:
- For any gate it is measured between 50% of i/p transition to corresponding 50% of o/p transition.
- The time required for a signal to propagate through a gate or net.
- It is taken as average of rise time and fall time.
Gate delay:
Transistor within a gate take a finite time to set. This means that a change on input of a gate takes a finite time to cause a change on output.
