The DSC1103CI1-125.0000T is an active-production XO (Standard) from Microchip's DSC1103 series, delivering a 125 MHz LVDS output from a MEMS resonator — no quartz crystal involved. The supply voltage range spans 2.25V to 3.63V, letting it run from a 2.5V or 3.3V rail without an extra regulator — useful when the board already carries both.
MEMS reliability and frequency stability
Frequency stability is ±50 ppm, which holds the 125 MHz LVDS clock within tight jitter margins for SerDes, FPGA transceivers, and high-speed ADC sampling clocks.