What this quad-output MEMS oscillator replaces on your clock tree
The DSC400-4334Q0022KE1T packs four independent clock outputs — 125 MHz, 100 MHz, 100 MHz, 125 MHz — into a single 5.00 mm x 3.20 mm 20-VFQFN package, replacing up to four discrete oscillators and their associated routing. Each output can be configured as HCSL or LVDS differential signaling, covering PCIe reference clocks and FPGA/SoC high-speed interfaces without an external level translator.
What the ±50 ppm stability buys you
Frequency stability of ±50 ppm over the -20°C to 70°C range keeps the clock edge jitter within the timing budget for 125 MHz PCIe Gen 1/2/3 reference clocks and 100 MHz Ethernet MAC/PHY interfaces. For tighter-precision applications (e.g., 10 GbE or SyncE), a ±25 ppm or ±10 ppm variant in the DSC400 family would be the better fit. The 0.90 mm package height fits standard mezzanine-card spacing and 1U rack-mount equipment where board-to-board clearance is tight.