and, we have got customer's input clock character
(1) mode 1: input high pulse width 1.594ns, input low pulse width 2.697ns
(2) mode 2: input high pulse width 2.730ns, input low pulse width 2.640ns
(3) mode 3: input high pulse width 2.802ns, input low pulse width 2.727ns
do you think such specification is OK for 165MHz application?