“Failsafe” clocking mechanism offers clock switchover

Micrel’s SY8984x series of high bandwidth 2:1 multiplexers prevent short cycles (“runt pulses”) when switching from one clock to another. Such a feature is important in data center and other mission-critical applications, in which a cough or short-cycle could result in false data triggers. While a number of manufacturers promote this form of clock switching, Micrel’s architecture may be unique in that it does not rely on a phased-locked loop (PLL).