Figure 9-8 shows an example of a PCB layout with the TMUX111x. Some key
considerations are:
- Decouple the VDD pin with a 0.1µF capacitor,
placed as close to the pin as possible. Make sure that the capacitor voltage
rating is sufficient for the VDD supply.
- Keep the input lines as short as possible.
- Use a solid ground plane to help reduce electromagnetic
interference (EMI) noise pickup.
- 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.