DSC1122AE1-123.5200T – 123.52 MHz LVPECL MEMS Oscillator

123.52 MHz LVPECL reference for high-speed clocks

The DSC1122AE1-123.5200T is a MEMS-based XO (Standard) oscillator delivering a 123.52 MHz LVPECL output — a common reference for high-speed SerDes, FPGA transceivers, and Ethernet PHYs that require a differential clock with tight jitter margins. Its supply voltage range of 2.25V to 3.6V lets it run directly from a 2.5V or 3.3V rail without an external LDO, simplifying the power tree.

MEMS vs quartz — what changes on the BOM

The Enable/Disable function (pin 1) pulls the output to high-impedance, reducing supply current from 58 mA (max) to 22 mA (max) — useful for power gating in multi-clock designs.