125 MHz MEMS clock for automotive and industrial timing
The DSC1121DI1-125.0000 is a 125 MHz XO (Standard) from Microchip's DSC1121 series, built on a MEMS resonator instead of a quartz crystal. The MEMS base gives it better resistance to shock and vibration — useful in engine-bay or chassis-mounted ECUs where a quartz can fail from mechanical stress. Output is CMOS, so it drives standard digital logic inputs directly without a level translator. The Enable/Disable function lets the system shut off the oscillator for low-power sleep modes — the disable current drops to 22 mA max from 35 mA max active.
AEC-Q100 qualification and temperature grade
That covers under-hood and cabin domains where the ambient temperature can hit 85°C on a hot day with solar load. The ±50 ppm frequency stability holds the clock accuracy needed for CAN, LIN, or Ethernet PHY reference clocks.
Supply voltage flexibility and package footprint
Supply range is 2.25V to 3.6V, so it runs from a 2.5V or 3.3V rail without an extra regulator. The 6-SMD no-lead package measures 2.50 mm x 2.00 mm with a seated height of 0.90 mm — fits tight PCB stacks in automotive sensor modules or handheld test gear.