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PCA9515A - Is Pin-1 a true No-Connect?

Other Parts Discussed in Thread: PCA9517, PCA9515A

 

Technical question about the PCA9515A.  Is Pin-1 a true No-Connect?  Can I connect +3.3V to PCA9515A's Pin-1 to allow the population of either a PCA9515A part or a PCA9517 part?