The DSC1001AI2-004.0000T is a 4 MHz MEMS-based XO with CMOS output, built on Microchip's DSC1001 series. It replaces a quartz crystal plus load caps with a single silicon resonator — no start-up time, no crystal drive-level tuning.
That matters for a CAN node that sleeps between bus messages — the oscillator's draw is below the transceiver's standby current, so it doesn't dominate the sleep budget. A 3.3V MCU and a 1.8V FPGA can use the same oscillator BOM line; the part auto-ranges.
The part draws 6.3 mA max, so self-heating is negligible. Tape & Reel (TR) packaging feeds straight into a pick-and-place; no manual handling needed.