33.333 MHz MEMS oscillator — what it replaces and why
The MEMS resonator is the key difference from a quartz crystal: it's inherently more shock- and vibration-tolerant, and it starts up faster because there's no crystal motional inductance to overcome. The 6-SMD package (5.00mm x 3.20mm) is a standard footprint that drops onto the same pads as many quartz oscillators, so a board designed for a quartz XO can often take this MEMS part without a layout change.
The 2.25V–3.6V supply range covers both 2.5V and 3.3V logic rails without an intermediate LDO — one oscillator line item serves two voltage domains. At 85°C the 35 mA max supply current is still within the thermal budget of a 4-layer board with no forced airflow — the MEMS die itself draws less than a comparable quartz oscillator at high temperature because its frequency vs temperature curve is flatter.
Enable/Disable function and disable current
When disabled, the oscillator still draws 22 mA max — that's the internal PLL and MEMS drive circuitry staying alive, not a true zero-power shutdown. For a battery-powered device that sleeps most of the time, a load switch ahead of the oscillator's Vdd will cut the disable current to zero; the Enable pin alone saves only the output buffer current.