Table 1—Here are the timing values for the circuit illustrated in Figure 1.

Timing parameter

 

Minimum value           

 

Maximum value
Nominal CLK frequency 25 MHz 25 MHz
CLK to Q delay (both flip-flops) 2 ns  5 ns
Clock delay 1 ns 3 ns
Propagation delay through logic gates 1 3 ns   15 ns
Propagation delay through logic gates 2  5 ns   12 ns
D input setup time to CLK (both flip-flops)  10 ns   
D input hold time after CLK (both flip-flops)  6 ns