33.3333 MHz MEMS oscillator — active, industrial temp, ±10 ppm
The DSC1121CL5-033.3333 is a MEMS-based XO (Standard) oscillator delivering a 33.3333 MHz CMOS output from a 2.25V to 3.6V supply rail — the wide voltage tolerance lets it run off a 3.3V or 2.5V rail without an intermediate regulator, saving a component and a PCB via. The ±10 ppm absolute pull range (APR) holds the frequency across temperature and aging — tight enough for 100BASE-TX Ethernet or a USB clock without external trimming.
MEMS vs quartz — shock tolerance and startup reliability
A quartz oscillator at 33.3333 MHz in the same 6-VDFN footprint would typically offer similar stability but with higher sensitivity to mechanical stress and a longer startup time; the MEMS construction gives the DSC1121CL5 an edge in high-vibration or rapid-thermal-cycling applications.