ZL402x Clock Fanout Buffers Microsemi / Microchip ZL402x Clock Fanout Buffers offer six fanout combinations with low-voltage positive emitter-coupled logic (LVPECL) or low-voltage differential signalling (LVDS) output types. These clock fanout buffers are categorised into miClock and miSmart variants. The ZL402x clock buffers feature low skew and ultra-low additive jitter for the different frequency ranges. The ZL402x clock buffers combine with miClockSynth™ synthesisers to create a simplified, reliable and low-cost complete clock tree.