Switching characteristics in terms of TTL flip flops
Note that the 200MHz is in the minimum maximum frequency. This means that that that is the worst case maximum frequency you can expect it to operate at and it might do better. The flip flop will operate down to DC (nearly). This documentation is somewhat confusing in introducing a double negative.
The frequency of operation is usually limited by the external timing paths between Q and D of the flip flops. A google search for flipflop setup time is a good place to start.