The DSC1123AL2-100.0000: This is a 100 MHz LVDS output MEMS-based XO from Microchip's DSC1123 series — a drop-in clock source for high-speed serial interfaces, Ethernet PHYs, and FPGA reference clocks that need a clean differential signal without the jitter of a single-ended oscillator.
The supply voltage range of 2.25V to 3.63V covers both 2.5V and 3.3V logic rails — no need for a separate LDO when the board has a 2.5V FPGA bank and a 3.3V PHY.
Frequency stability and MEMS reliability
Housed in a 6-SMD no-lead exposed pad package measuring 7.00 mm x 5.00 mm with a seated height of 0.90 mm — the same footprint as standard 7x5 mm quartz oscillators, so the PCB layout stays the same when switching from quartz to MEMS.
