Clock distribution at 4.8 GHz – what the fanout buys you
The ADCLK954BCPZ-REEL7 is a 2-input mux that fans out to 12 LVPECL outputs with a maximum frequency of 4.8 GHz. That frequency ceiling covers the reference clock for most high-speed ADCs, DACs, and FPGAs on the market – the part does not become the bottleneck in the clock tree. All twelve outputs are differential LVPECL, which means the DC termination must be to VCC – a common pitfall for teams migrating from LVDS.
Supply rail tolerance and decoupling reality
The supply range is 2.97V to 3.63V – a 3.3V rail must stay within ±0.33V, so a 3.3V LDO with ±1% initial accuracy plus load transient headroom is the safe choice. The 40-LFCSP exposed paddle must be soldered to a ground plane with adequate thermal vias for both heat spreading and return current.
Sourcing and lifecycle posture
Sourced per RFQ; current availability and pricing confirmed at quote time.