155.52 MHz LVPECL clock source for high-speed serial links
The DSC1122CL2-155.5200 is a MEMS-based XO (Standard) oscillator delivering a 155.52 MHz LVPECL output — the clock frequency used in SONET/SDH, 10GbE, and Fibre Channel line cards. The 58 mA max supply current includes the output buffer and the MEMS resonator — no external termination resistors are needed beyond the standard LVPECL 50-Ω to VCC-2V bias.
The 3.20 mm x 2.50 mm 6-SMD no-lead package (0.90 mm seated height) suits dense PCB layouts — the small footprint leaves room for decoupling caps and other passives near the clock input.