MEMS clock at 155.52 MHz — supply and output fit
The DSC1121BE2-155.5200T is a MEMS-based XO (Standard) delivering a 155.52 MHz CMOS output — a common frequency for 10G Ethernet and high-speed serial links. It operates from a single 2.25V to 3.6V supply, meaning it sits comfortably on a 2.5V or 3.3V rail without an external LDO.
Package and temperature — board-level fit
Housed in a 6-SMD, No Lead package measuring 5.00mm x 3.20mm with a seated height of 0.90mm — this is the standard 5x3.2 mm oscillator footprint that drops onto most Ethernet PHY or FPGA clock input layouts without a pad change. No AEC-Q100 qualification here, so it stays out of under-hood or outdoor telecom enclosures.
Listed as Active — Microchip continues production with no published EOL.