47.999 MHz LVPECL MEMS oscillator — ±10 ppm stability, active production
The DSC1122CE5-047.9990T is a MEMS-based XO (Standard) oscillator from Microchip's DSC1122 series, delivering a 47.999 MHz LVPECL differential output with ±10 ppm frequency stability across -20°C to 70°C.
LVPECL output and supply range — termination matters
LVPECL is a differential output that requires a 50-ohm termination to VCC - 2 V at the receiver.
Package and temperature — board-fit constraints
6-SMD no-lead package, 3.20 mm x 2.50 mm footprint, 0.90 mm seated height — a compact footprint that suits dense PCB layouts but demands a clean solder-paste stencil aperture for the no-lead pads. For outdoor cabinets or engine-bay use, the wider-temperature DSC1122 variants (e.g., -40°C to 85°C) are the correct choice.