The DSC1001CI1-028.6363 is a MEMS-based XO (Standard) oscillator from Microchip's DSC1001 series, delivering a 28.6363 MHz CMOS output with ±50 ppm frequency stability. Supply voltage spans 1.8V to 3.3V, so the same BOM line serves 1.8V-core MCUs and 3.3V peripheral buses without a second oscillator variant.
Standby power-down and board-fit
Normal operation draws 8 mA max, typical for a MEMS oscillator at this frequency; the 4-VDFN package (3.20 mm x 2.50 mm) is a drop-in for standard 3.2 x 2.5 mm XO footprints.