The DSC1122CI5-048.0000 is a 48 MHz MEMS-based XO (Standard) from Microchip's DSC1122 series, delivering a differential LVPECL output — the standard for low-jitter clock distribution in high-speed data links, SerDes reference clocks, and FPGA/ASIC clock trees where single-ended CMOS would pick up noise. Supply voltage spans 2.25V to 3.6V, so the same BOM line works on a 2.5V or 3.3V rail without a separate regulator — just confirm the LVPECL termination voltage matches the receiver's Vcco.
Startup time for MEMS oscillators is typically under 5 ms, compared to 10–20 ms for a quartz XO — the Enable/Disable function lets the system gate the clock without waiting for a long crystal warm-up.
The 6-SMD no-lead package (3.20 mm x 2.50 mm x 0.90 mm) is a standard MEMS oscillator footprint shared across the DSC1122 family, so a pin-compatible frequency change (e.g., 50 MHz or 100 MHz) uses the same PCB land pattern.