163.84 MHz MEMS clock for automotive and industrial
The DSC1121AI2-163.8400T is a MEMS-based XO (Standard) delivering a fixed 163.84 MHz CMOS output — a common frequency for Ethernet, SerDes reference clocks, and high-speed ADCs in automotive vision and radar modules. Rated across -40 to 85°C with ±25 ppm frequency stability, it holds timing margin through the full industrial and cabin-temperature range. The 2.25–3.6 V supply rail covers 2.5 V and 3.3 V logic without an external regulator. AEC-Q100 qualification means this part has passed the automotive reliability stress suite — temperature cycling, ESD, latch-up — making it a candidate for under-hood and chassis-domain ECUs where a quartz oscillator's vibration sensitivity would be a concern.
Active production — no LTB window yet
The MEMS resonator construction avoids the quartz supply chain constraints that sometimes hit crystal-based oscillators. The Enable/Disable function lets the system pull the output to high-Z, dropping supply current from 35 mA max to 22 mA max — useful for power-gated domains in automotive body controllers or battery-backed telematics units.
Package and board-level fit
6-SMD, No Lead Exposed Pad package, 7.00 × 5.00 mm footprint, 0.90 mm seated height — standard 7×5 mm oscillator land pattern, no via-in-pad required. Tape & Reel (TR) delivery for automated pick-and-place. The MEMS base resonator offers better shock and vibration tolerance than a quartz crystal — relevant for engine-mount or transmission-adjacent electronics where mechanical stress can pull a quartz oscillator off frequency.