Hello!
So we don't spec the channel skew on this part. The propagation delay is also derived mathematically - not measured in the lab. This comes from calculating the RC time constant of the circuit using specific load conditions.
However you are able to get a rough estimate of what your worst case skew could be. The basic set up for the test is shown below:
Figure 1 shows the basic test setup and figure 2 shows a simplified model. The propagation delay is calculated as the RC constant; so to find the time constant use the circuit in figure 2 to find R_th. For figure 2, this can be simplified as R_On // R_Load. Take R_th and multiply it by the total capacitance and you will have the propagation delay for the channel. The largest skew possible is if one channel is max Ron, and one is min Ron; then you will have maximum skew between channels. However if the environmental conditions are the same for the entire chip and signals are similar going into each terminal this value is going to be low.
Best,
Parker Dodson
