Three output frequencies from one MEMS die
The DSC2010FI2-B0004T is a MEMS-based XO that outputs three standard telecom/data-com frequencies: 106.25 MHz, 125 MHz, and 155.52 MHz on a single device. That covers 1GbE reference clocks, SFP/SFP+ SerDes rates, and common FPGA transceiver line rates without needing a separate oscillator for each frequency. The LVCMOS output level keeps the interface simple — no external termination resistors or AC-coupling caps needed when driving a clock buffer or FPGA input.
Stability and supply tolerance for industrial environments
That is tight enough for most 1GbE and 2.5GbE links without requiring a TCXO; the margin covers the PLL bandwidth of the downstream PHY or FPGA transceiver.