Direct routing and routing through one or more vias

[ljy4468]

Routing problem~

Hi all
I've a question about routing.
There's two cases.
First, Direct routing with only one metal.
Second, routing through one or more vias.

There's difference in perfomance?
signal delay increases through vias????


Thanks in advance

 

[sambireddy]

Routing problem~

each one has got its own advantage...
direct routing does increase the performance and is useful in critical signal routing. and
routing through vias reduces the problem of antenna effect and is preferred when routing through long distances.

 

[Teddy]

Routing problem~

vias have higher resistance so total RC constant goes up.