MEMS oscillator with standby for power-sensitive clocks
The DSC1101DE5-027.0000T is a 27 MHz MEMS-based XO (Standard) from Microchip's DSC1101 series, delivering CMOS output with ±10 ppm frequency stability across -20°C to 70°C. Its 2.25V to 3.6V supply range lets it run directly from 2.5V, 3.0V, or 3.3V rails without an extra regulator — one less BOM line for the power tree.
When the standby pin is asserted, the oscillator stops and the output goes high-impedance, drawing only 95 µA max from the supply — a fraction of the 35 mA active current. This makes the DSC1101DE5-027.0000T a fit for handheld instruments, IoT endpoints, or battery-backed real-time clocks where the clock tree must shut down between measurement intervals.