The DSC1001AE1-066.6660T is a MEMS-based XO (Standard) delivering a fixed 66.666 MHz CMOS output — a frequency commonly used for 10/100/1000 Ethernet reference clocks and serial-link PHYs. The -20°C~70°C operating temperature range is commercial-grade, so if the target ambient exceeds 70°C — for example, an engine-bay ECU — this part is not the fit; the industrial or extended range sibling in the DSC1001 family would be needed.
Active draw is 7.2 mA max at 66.666 MHz — typical for a MEMS oscillator at this frequency and well within the budget of a 1.8 V to 3.3 V rail. The standby current is low enough that a coin-cell backup can hold the oscillator off without draining the battery during sleep.
The 4-SMD, No Lead Exposed Pad package measures 7.00 mm x 5.00 mm with a seated height of 0.90 mm. The 0.276" x 0.197" footprint is standard for 7x5 mm oscillators and is pin-compatible with many quartz-based XOs, simplifying a drop-in replacement on existing layouts.