Building Clock Tress

[aditya1579]

All,

What is the difference between building clock trees with inverters versus clock buffers ?

What are the advantages / disadvantages of one versus the other ?

Thanks,
Aditya

 

[vijayR15]

Hai aditya,

The main difference is delay will be less for invertor compare to buffer in most cases

 

[aditya1579]

what is the reason ?

Thanks,
Aditya

 

[rca]

The clock std cell has same delay for both transition.
Inverter and buffer are needed to give more flexibility to the tool.

 

[sim_333]

Inverters will have same rise and fall delay which is not in case of buffer and which is required for maintaining a min clock pulse width .