The DSC1001AL2-027.0000 is a MEMS-based XO (Standard) from Microchip's DSC1001 series, delivering a 27 MHz CMOS output in a 4-SMD, no-lead exposed pad package measuring 7.00 mm x 5.00 mm. Rated AEC-Q100, it operates from -40°C to 105°C — the industrial temperature band that covers under-hood and outdoor telecom environments where quartz oscillators may struggle with vibration or temperature shock. Supply voltage spans 1.8V to 3.3V, so the same part serves 1.8V-core MCUs and 3.3V peripheral buses without a separate regulator rail.
Frequency stability and replacement fit
As a MEMS oscillator, it can replace a standard quartz crystal oscillator in the same 7.0 mm x 5.0 mm footprint, provided the output is CMOS and the supply voltage matches one of the 1.8V–3.3V rails.