The DSC1001CI2-020.0000 is a 20 MHz fixed-frequency XO (Standard) from Microchip's DSC1001 series, built on a MEMS resonator and delivering CMOS output.
The 1.8V to 3.3V supply range means the same oscillator can run off a 1.8V core rail or a 3.3V I/O bank — no level translator needed. Active current draw is 6.3 mA max, which keeps the thermal budget tight even in a sealed 4-SMD package.
