40 MHz MEMS oscillator for harsh environments
The DSC1121DM2-040.0000T is a 40 MHz MEMS-based XO (standard oscillator) from Microchip's DSC1121 series, delivering a CMOS output with enable/disable function.
Supply voltage and power budget
The oscillator operates from a 2.25V to 3.6V supply, covering both 2.5V and 3.3V logic rails without an extra regulator. Maximum supply current is 35 mA when enabled, dropping to 22 mA when disabled — useful for power-sensitive designs that gate the clock during sleep modes.
Package and footprint for board layout
Housed in a 6-SMD no-lead package measuring 2.50 mm x 2.00 mm with a seated height of 0.90 mm, this oscillator fits tight PCB real estate. The no-lead construction means the solder joints are under the package — ensure the PCB land pattern matches the recommended footprint for proper fillet formation and inspectability.
Active production — no end-of-life pressure
It is suitable for both new designs and ongoing production builds.