MEMS oscillator with military temperature range and automotive qualification
The DSC1121BM1-050.0000 is a 50 MHz MEMS-based XO (Standard) oscillator from Microchip Technology, delivering CMOS output across a wide supply range of 2.25V to 3.6V.
Frequency stability and supply flexibility
Rated at ±50 ppm frequency stability, this oscillator holds its 50 MHz output within 2.5 kHz of nominal across temperature and supply variation — adequate for general-purpose MCU and FPGA clocking, though tighter stability (±25 ppm) would be required for precision Ethernet or USB timing.
No pin-compatible second source is documented, but the 6-SMD no-lead footprint (5.00mm x 3.20mm) is a standard MEMS oscillator land pattern shared by other DSC1121 frequency variants.