Four 100 MHz HCSL lanes from one MEMS die
The DSC400-4444Q0030KI1 packs four independent 100 MHz HCSL outputs into a single 20-VFQFN package — no external fanout buffer needed for a four-lane PCIe reference clock tree.
Supply tolerance and temperature grade
Runs on any rail from 2.25 V to 3.6 V — a 2.5 V or 3.3 V supply works without a dedicated LDO, and the wide tolerance absorbs ripple from a switching regulator. The part holds its 100 MHz within 5 kHz across the full temperature swing, which keeps the PCIe reference clock within the ±300 ppm window required by the base spec.
Enable/Disable function and package footprint
The 5.00 mm x 3.20 mm body and 0.90 mm height fit the same footprint as many standard 4-output clock generators.