100 MHz HCSL MEMS oscillator — timing tree fit
The DSC1124BI5-100.0000T: Maximum supply current is 42 mA — the HCSL output stage draws more than a standard LVCMOS oscillator at the same frequency, so budget the 3.3 V rail accordingly when the oscillator shares a regulator with other 100 MHz clock loads.
Package footprint and rework considerations
The MEMS resonator inside means no crystal load-capacitance matching on the PCB — the oscillator is self-contained and the output swing is set by the supply, not by external tuning components.
Listed as Active — Microchip continues to manufacture the DSC1124 series, so this part is available through authorized distribution channels for both prototype and production volumes.