50 MHz MEMS oscillator with full military temperature range
The DSC1121DM1-050.0000 is a MEMS-based XO (standard oscillator) delivering a 50 MHz CMOS clock from a 2.25V to 3.6V supply rail — one part covers 2.5V and 3.3V logic families without a translator. AEC-Q100 qualification confirms the device passed automotive-grade reliability stress — thermal cycling, moisture resistance, and extended life test — making it suitable for under-hood and chassis-domain electronics.
MEMS resonator vs quartz — what the spec means for your board
The MEMS base resonator eliminates the quartz crystal startup delay — the oscillator is stable within microseconds of power-up, which simplifies sequencing in multi-rail designs. Frequency stability is ±50 ppm across the full temperature range and supply variation — tight enough for a 50 MHz clock feeding an MCU or FPGA PLL without dynamic reconfiguration. Maximum supply current is 35 mA when enabled; with the Enable/Disable function pulled low, the output is tri-stated and current drops to 22 mA max — useful for power-gating clock trees in battery-backed systems.
Package, footprint, and board integration
Housed in a 6-SMD, no-lead package measuring 2.50 mm × 2.00 mm with a seated height of 0.90 mm, the DSC1121DM1-050.0000 fits dense PCB layouts — the small footprint leaves room for decoupling caps near the supply pin. Surface-mount assembly with standard reflow profiles; the no-lead package requires a solder-paste stencil aperture matched to the pad geometry — no via-in-pad needed.
Product status is Active — Microchip continues to manufacture the DSC1121DM1-050.0000 with no announced end-of-life. No official successor or second-source is listed; the DSC1121 series is the current production family. Available through independent distribution; quoted to order against the BOM quantity. Confirm the reel/tape quantity and lead time at RFQ — the listed package is Tube, but tape-and-reel options may be orderable under the same base number.