The DSC1103CL5-148.5000T is a MEMS-based XO (Standard) delivering a 148.5 MHz LVDS output — the exact frequency used in 3G-SDI video, 10GbE reference clocks, and high-speed ADC/DAC sampling. The LVDS differential pair gives better noise immunity than a single-ended CMOS output at this frequency, which matters when the clock trace runs across a mixed-signal board.
The supply range of 2.25V to 3.63V lets it run directly off a 2.5V or 3.3V rail without an intermediate LDO — one less part to source and place.
The active max supply is 32 mA, typical for a 148.5 MHz LVDS output.