100 MHz MEMS XO — Active, production-ready
A logic-low on the enable pin wakes the part in under 5 ms, typical for the family.
Package, footprint, and layout fit
Housed in a standard 4-SMD, No Lead package measuring 5.00 mm x 3.20 mm with a seated height of 0.90 mm. The 0.197" x 0.126" footprint matches the common 5x3.2 mm oscillator land pattern — no layout change needed if swapping from a quartz XO in the same form factor. The MEMS base resonator eliminates quartz startup issues and is less sensitive to mechanical shock and vibration — relevant for portable and industrial equipment.
Microchip continues production — no last-time-buy pressure. The DSC1033 series is the standard CMOS-output MEMS oscillator family from Microchip. No pin-compatible second source is formally listed, but the 5x3.2 mm footprint is widely adopted across SiTime and other MEMS vendors — a drop-in alternative is possible if the supply chain requires it.