MEMS resonator, dual HCSL clock outputs
The DSC400-4444Q0023KI1 is a MEMS-based XO (Standard) from Microchip's DSC400 series, delivering two fixed HCSL outputs at 100 MHz and 156.25 MHz — common reference frequencies for PCIe Gen3/4 and 10GbE SerDes clock trees.
The supply voltage spans 2.25 V to 3.6 V, covering 2.5 V and 3.3 V rails commonly found in FPGAs and SoCs — no extra regulator needed if the rail is within this window.
20-VFQFN package and enable/disable function
Housed in a 20-VFQFN with exposed pad (5.00 mm x 3.20 mm, 0.90 mm height), the package requires a thermal pad on the PCB for heat sinking — the exposed pad must be soldered to a ground plane to meet the datasheet thermal resistance.
No stock-holding claim; sourced through independent distribution channels.