Dual-frequency MEMS oscillator for video clock trees
The DSC400-0303Q0086KI2T is a MEMS-based XO (standard) from Microchip's DSC400 series, delivering two LVDS outputs at 148.5 MHz and 148.35 MHz — the frequency pair commonly used in broadcast video and professional display interfaces where a single oscillator replaces two crystal-can oscillators on the same footprint.
Supply rail flexibility and enable function
Supply voltage spans 2.25 V to 3.6 V, so the same BOM position works on a 2.5 V FPGA bank or a 3.3 V ASIC rail — no level translator needed on the oscillator supply.
Housed in a 20-VFQFN with exposed pad, 5.00 mm × 3.20 mm body and 0.90 mm height — the exposed pad must be soldered to a thermal land on the PCB to meet the datasheet's thermal resistance; the 0.50 mm pitch QFN pads need a solder-paste stencil aperture that matches the land pattern to avoid bridging. Supplied in tape-and-reel (TR), the part is pick-and-place ready for high-volume assembly lines; confirm the MSL level on the reel label before the bake decision.
No official second-source or pin-compatible cross is listed by Microchip, but the DSC400 family shares the same 20-VFQFN footprint across frequency variants — a different frequency code can be substituted if the clock tree tolerates the change.