The DSC1121CM1-025.0000T: This MEMS oscillator holds the 25 MHz CMOS clock edge within ±50 ppm across -55°C to +125°C, where a quartz part would drift past the system clock budget.
AEC-Q100: the under-hood reliability gate
For an engine ECU that sees 125°C underhood, the rating gives the thermal margin a commercial-grade oscillator lacks.
Supply voltage range and output logic
The oscillator accepts a 2.25V to 3.6V supply, covering both 2.5V and 3.3V logic rails without a separate LDO.
Housed in a 6-SMD no-lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm. The lands on a standard 6-pad footprint — no via-in-pad required.