100 MHz fixed-frequency XO for PCIe reference clock trees
The DSC1104DI5-100.0000 is a 100 MHz MEMS-based XO with HCSL output — the standard reference clock for PCIe Gen 1, 2, and 3 interfaces.
Supply voltage and power-down current budget
The supply range spans 2.25V to 3.6V, covering 2.5V and 3.3V rails commonly found in networking and FPGA boards.
Microchip lists the DSC1104DI5-100.0000 as Active. No pin-compatible alternative is required at this time; the DSC1104 series is the current-generation MEMS oscillator family from Microchip.
6-VDFN package and board layout considerations
The 6-VDFN package measures 2.50 mm × 2.00 mm with a seated height of 0.90 mm — a compact footprint that fits dense clock trees on multi-layer PCBs. The surface-mount land pattern follows standard JEDEC VDFN guidelines; no via-in-pad is required, but a solid ground pad under the package improves thermal dissipation and reduces supply noise coupling.