Automotive-grade MEMS oscillator for ECU clocking
The DSC1121AI2-003.6864T is a MEMS-based XO (Standard) from Microchip, delivering a 3.6864 MHz CMOS output with ±25 ppm frequency stability over -40°C to +85°C. Rated AEC-Q100, it carries the qualification documentation — PPAP, temperature grade, and reliability stress — that an OEM auditor expects for under-hood or cabin-domain electronics.
Operating from 2.25V to 3.6V, the oscillator covers 2.5V and 3.3V logic rails without an external level translator — the CMOS output swings to the supply rail, so a 2.5V supply produces a 2.5V-compatible clock. The 3.6864 MHz frequency is a common base for UART baud-rate generation (e.g., 115200 baud) and MCU core clocking in automotive body controllers and gateway modules.
Housed in a 6-SMD, No Lead Exposed Pad package measuring 7.00 mm x 5.00 mm x 0.90 mm, the footprint matches industry-standard 7x5 mm oscillator land patterns.