The DSC1121BI5-050.0000T is a 50 MHz MEMS-based XO with CMOS output, rated across -40°C to 85°C and qualified to AEC-Q100 — the automotive reliability standard that covers temperature cycling, ESD, and latch-up beyond commercial-grade parts.
Supply range and enable/disable function
Operating supply spans 2.25V to 3.6V, covering both 2.5V and 3.3V logic rails without an external regulator — the oscillator draws 35 mA max when enabled and drops to 22 mA max in disable mode via the Enable/Disable pin.
Housed in a 6-SMD no-lead package measuring 5.00 mm x 3.20 mm with a seated height of 0.90 mm — the 0.197" x 0.126" footprint matches standard 5x3.2 mm oscillator land patterns, and the no-lead construction reduces parasitic inductance compared to a gull-wing package.
The DSC1121 series is an established Microchip MEMS oscillator family; no pin-compatible second source is documented, but the wide supply range and standard footprint allow direct substitution with other 5x3.2 mm MEMS XOs from the same series.