The 1.8V to 3.3V supply range means it can run from a single 3.3V rail or a lower-voltage core supply without a separate regulator, simplifying the power tree in mixed-voltage designs.
For a spare-parts storeroom, this means the part can be ordered against BOM quantities without an imminent obsolescence risk — store the reels dry (MSL level per datasheet) and they will be usable for years.
4-SMD No-Lead Package and Board Fit
Housed in a 4-SMD, No Lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm, this oscillator fits standard surface-mount footprints for 3.2 x 2.5 mm XO devices.