The DSC6001MI2B-027.0000 is a 27 MHz MEMS-based oscillator from Microchip's DSC60XXB series, delivering a CMOS output from a 1.71V to 3.63V supply rail.
The 1.71V–3.63V supply range lets this oscillator run directly from a 1.8V, 2.5V, or 3.3V rail without an external LDO — a BOM simplification for multi-voltage designs. Typical current draw is 1.3 mA, which keeps the oscillator's contribution to the system power budget under 5 mW at 3.3V. For a battery-backed RTC or always-on domain, that draw is low enough to leave the oscillator powered continuously.
Housed in a 4-VFLGA package measuring 2.00 mm x 1.60 mm with a seated height of 0.89 mm, this oscillator fits space-constrained PCBs.