11.1 Layout Guidelines

Figure 37 shows an example of a PCB layout with the TMUX6119.

Some key considerations are:

1. Decouple the V_DD and V_SS pins with a 0.1-µF capacitor, placed as close to the pin as possible. Make sure that the capacitor voltage rating is sufficient for the V_DD and V_SS supplies.
2. Keep the input lines as short as possible. In case of the differential signal, make sure the A inputs and B inputs are as symmetric as possible.
3. Use a solid ground plane to help distribute heat and reduce electromagnetic interference (EMI) noise pickup.
4. Do not run sensitive analog traces in parallel with digital traces. Avoid crossing digital and analog traces if possible, and only make perpendicular crossings when necessary.