12 MHz MEMS oscillator for 1.8V logic rails
The DSC1018DI1-012.0000 is a 12 MHz MEMS-based XO (Standard) from Microchip's DSC1018 series, delivering a CMOS output from a 1.8V supply rail.
A dedicated standby (power-down) pin disables the output and reduces current consumption from 3 mA (typical) to 1 µA maximum. For a battery-powered sensor node that sleeps 99% of the time, this standby current is below the self-discharge rate of a coin cell — the oscillator stops drawing meaningful power between wake cycles.
Housed in a 4-SMD, no-lead package measuring 0.098" × 0.079" (2.50 mm × 2.00 mm) with a seated height of 0.035" (0.90 mm), this oscillator fits tight PCB real estate. The small footprint demands a 0.1 µF decoupling capacitor within 2 mm of the supply pin — the layout engineer should route the VDD trace wide and short to keep the supply clean at 12 MHz.