MEMS oscillator with standby — what it is
The DSC1033DI2-019.6608T is a 19.6608 MHz MEMS-based XO (standard oscillator) from Microchip's PureSilicon™ series, delivering a CMOS output at 3.3V supply. It integrates a MEMS resonator and a CMOS PLL in a 4-SMD no-lead package measuring 2.50 mm × 2.00 mm — a common footprint for space-constrained timing applications.
Microchip lists the DSC1033DI2-019.6608T as obsolete. For a new design, consider the active DSC1033 family variants or a functionally equivalent MEMS oscillator from another supplier; a board spin may be required if the package or pinout differs.