The DSC1103CI2-160.0000T: The MEMS resonator eliminates the quartz-crystal startup and aging concerns — the frequency is set at the factory and holds within ±25 ppm over temperature and supply variation, which is tight enough for 1 GbE reference clocks or FPGA transceiver lanes without external trimming.
The supply range spans 2.25V to 3.63V — it runs from a 2.5V or 3.3V rail directly, and the LVDS output common-mode voltage tracks the supply so no level translation is needed on the receiver side.
Housed in a 6-SMD no-lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm — the small footprint suits dense PCB layouts, but the no-lead terminations require a solder-paste stencil with a 0.20 mm aperture for the centre pad to avoid voids.