You are designing a CDC path for a high-speed 2GHz clock domain receiving data from a 100MHz domain. If you increase the destination clock frequency further to 3Ghz without changing the 2-FF synchronizer, what happens to the Mean Time Between Failures(MTBF)?
Answer: B
Explanation: MTBF is inversely proportional to the exponential of the settling time available (tr). As the clock frequency increases, the time available for the first flop to resolve metastability (Tclk - tsetup) decreases. Even a small decrease in this "settling window" results in an exponential drop in MTBF.
