The total MTBF of a design is a function of:
- Synchronizer MTBF
- Device failure in time (FIT) rate due to single-event upsets (SEUs)
Note: The device FIT rate due to SEUs largely depends on process and device size.
The synchronizer MTBF is design dependent and varies with the following:
- Number of asynchronous CDC points
- Number of synchronizer stages at each crossing point
- Frequency of the destination FF
- Toggle rate of the source