What would the maximum current draw for this chip be?
I think the maximum current is 61.5mA. 24 inputs at 2.5mA and the quiescent current of 1.5mA. That current will occur with all inputs at 3.4V. If any of the inputs are at Vcc or 0V the current will be less. 

If you look at an older version of the datasheet, it seems apparent they are referring to inputs, not control inputs.