On the PCA9554ARGT part, does the thermal pad need to be grounded or can it be left floating?
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On the PCA9554ARGT part, does the thermal pad need to be grounded or can it be left floating?
Dwight,
Does this mean that the pad is not internally electrically connected?
Correct, it is not connected to the ground pin on the wafer or anything.
Some of the devices will explicitly say how to connect the thermal pad if it is being used, but if not, it can be kept floating and left not connected.