Dual 156.25 MHz HCSL clock in a MEMS package
That frequency is a standard reference for PCIe Gen3/4 and 10GbE SerDes, so this part fits directly into a switch, router, or FPGA clock tree without an external PLL. No external load capacitors are needed — the oscillator is self-contained.
The supply range spans 2.25V to 3.6V, so the same BOM line works on a 2.5V FPGA bank or a 3.3V ASIC rail.
Package and board layout notes
The 14-VFQFN package measures 3.20 mm x 2.50 mm with a 0.90 mm height. Hand-soldering is possible with a hot-air station and a fine-tip iron for the perimeter pads.
No official second-source or pin-compatible replacement is recorded — the DSC2044 series is the only MEMS XO family from Microchip at this frequency and output type.