Four clocks, one MEMS die – what it replaces on your BOM
The DSC400-2222Q0104KE1 is a MEMS-based XO that generates four independent LVPECL output frequencies from a single silicon resonator — 125 MHz, 100 MHz, 200 MHz, and 156.25 MHz. That replaces four separate quartz oscillators on the board, saving both layout area and four BOM line items.
Supply rail flexibility and the enable/disable pin
The supply voltage range is 2.25 V to 3.6 V, so a single 2.5 V or 3.3 V rail powers all four outputs. No second regulator needed for mixed-voltage logic families.
Package footprint and the exposed-pad reality
The 20-VFQFN with exposed pad measures 5.00 mm x 3.20 mm and stands 0.90 mm tall. The board layout engineer should plan for that thermal via pattern before the first spin; the footprint alone is not enough.