622.08 MHz DPLL for line-card timing
The ZL30145GGG2: This is a digital PLL (DPLL) with a 622.08 MHz maximum output frequency — the exact rate for OC-12/STM-4 in SONET/SDH transport. The 1:3 input-to-output ratio means one reference clock feeds three synthesized outputs, which is typical for fanning timing to multiple line-card PHYs or framers. The differential output (No/Yes) means the input side accepts single-ended clock references while the output side drives differential signals — CML or LVPECL levels, depending on the downstream load. That saves an external clock buffer when the PHY expects a differential input. The 64-CABGA (9x9 mm) package is a standard BGA footprint — 0.8 mm pitch typical for this ball count, which a 4-layer board can route without microvias.
Compliance and documentation
The standard compliance package (RoHS, REACH, conflict minerals reporting) is available with the shipment documentation.