14.3181 MHz MEMS oscillator — what it replaces and where it fits
That MEMS base resonator means it survives the shock and vibration profile of a factory-floor PLC or an outdoor telecom enclosure better than a quartz can — no crystal to crack or drift under mechanical stress. Disable current max is 22 mA, compared to 35 mA when running — not a deep-sleep saving, but enough to drop the thermal contribution on a dense board.
The supply range spans 2.25V to 3.6V, so the same order code serves a 2.5V FPGA bank and a 3.3V SoC clock input without a second line item.
Microchip lists the DSC1121CI2-014.3181 as Active. No NRND flag, no EOL notice — this part is safe to design in for production runs that span multiple years.