Why this MEMS oscillator beats a quartz can
The DSC1123CI1-156.2500T: A standard quartz oscillator at 156.25 MHz has a startup time in the milliseconds and a shock limit around 3000 g. The DSC1123 uses a MEMS resonator — it starts in microseconds and survives 50,000 g shock, which is why it carries AEC-Q100 qualification for the under-hood vibration environment. The 156.25 MHz LVDS output is a common reference for 10GbE and SFP+ modules — the differential pair reduces EMI and keeps the jitter budget tight for the SerDes PLL.
Supply range and disable function matter for the power tree
The 2.25 V to 3.63 V supply range covers 2.5 V and 3.3 V rails without an external regulator — a single supply feeds the oscillator and the LVDS termination bias. Enable/Disable pin pulls the output to high-Z and drops supply current from 32 mA to 22 mA — useful for power-cycled Ethernet ports or test-mode isolation.