The following are recommendations for best performance:
- Solid ground planes between each signal routing layer.
- Solid power planes for voltages.
- Power and ground pins should be connected to these planes through a via for each pin.
- Trace lengths for the component power and ground pins should be minimized to 0.100 inches or less.
- Vias should be spaced out to avoid forming slots on the power planes.
- High speed signals should not cross over a slot in the adjacent power planes.
- Placing extra vias is not required if there are sufficient ground vias due to normal ground connections of devices.