The DSC1121NE5-066.6660T is a MEMS-based oscillator from Microchip's DSC1121 series, delivering a 66.666 MHz CMOS output with ±10 ppm frequency stability across its -20°C to +70°C operating range. The MEMS resonator inherently withstands higher vibration and mechanical shock than a quartz crystal, which is why this series is common in ADAS camera modules, engine control units, and infotainment head units that see constant vibration.
The 2.25V to 3.6V supply range covers both 2.5V and 3.3V logic rails without an external regulator — useful when the same BOM position must work across multiple power domains. Max active supply current is 35 mA — budget this into the power tree; the enable pin is referenced to Vdd, so a logic-high enables the output.
Housed in a 6-SMD, No Lead package measuring 7.00 mm x 5.00 mm with a seated height of 0.90 mm — the 6-pad footprint is a standard MEMS oscillator land pattern, compatible with most reflow profiles for lead-free assembly.