The DSC1001CI2-016.0000T is an active-production XO (Standard) oscillator from Microchip's DSC1001 series, built on a MEMS resonator rather than a quartz crystal. The supply voltage spans 1.8V to 3.3V, so the same BOM line can serve a 1.8V core rail or a 3.3V I/O rail without a separate level translator.
Housed in a 4-SMD no-lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm. The land pattern is the same as a standard 3.2 x 2.5 mm quartz oscillator — no layout change needed if you are replacing a quartz part in the same footprint.
