10.1 Layout Guidelines

Thin traces can be used on the input due to the low current logic that is typically used to drive the TPL7407LA-Q1. Care must be taken to separate the input channels as much as possible, as to eliminate cross-talk. Thick traces are recommended for the output, in order to drive whatever high currents that may be needed. Wire thickness can be determined by the trace material's current density and desired drive current.

Since all of the channels currents return to a common ground, it is best to size that trace width to be very wide. Some applications require up to 2 A.

Since the COM pin only draws up to 30 µA, thick traces are not necessary.