33.333 MHz MEMS XO with military temperature range and AEC-Q100
The DSC1121AM2-033.3330T is a MEMS-based XO (standard oscillator) from Microchip's DSC1121 series, delivering a 33.333 MHz CMOS output with ±25 ppm frequency stability across the full -55°C to 125°C range. This temperature grade is rare for a MEMS oscillator — it covers avionics, satellite, downhole drilling, and engine-bay ECUs where quartz oscillators often suffer activity dips or startup failures at temperature extremes. This matters for any BOM that ships into a vehicle's under-hood or chassis domain — the oscillator won't drift open-loop when the ambient hits 105°C on a summer grade.
Supply voltage flexibility and disable current
The device operates from a 2.25V to 3.6V supply, covering the common 2.5V, 3.0V, and 3.3V logic rails without a separate regulator.
6-SMD package and board layout considerations
Housed in a 6-SMD, No Lead Exposed Pad package measuring 7.00 mm x 5.00 mm with a seated height of 0.90 mm.