ADG3247 :  How to use

Hello,

Our customer examines use of ADG3247, and there is a question.

1,The customer intends to input the same signal into two input.
  The outputting device of this signal is the following specifications,
  is there a problem?
   OUTPUT_CAPACITANCE:10pF
   IOH output current [dc]:-8mA
   IOL output current [dc]:8mA

2,The customer examines dumping resistance to connect with output PIN of ADG3247
  at 22 Ω, is there a problem?
  Or is there the recommended resistance level?

3,How should I do the disposal of unused ports?

Yuji