The DSC1001BI1-050.0000T: A common mistake is specifying a quartz oscillator for an under-hood module and discovering it fails vibration testing or drifts past ±50 ppm at 85°C. This DSC1001 uses a MEMS resonator, which inherently handles shock and temperature cycling better than a quartz blank — and it carries AEC-Q100 qualification, so the reliability program is already baked in.
Supply flexibility and standby for mixed-voltage designs
The 1.8V to 3.3V supply range means one BOM line covers both a 1.8V FPGA bank and a 3.3V microcontroller I/O rail — no separate regulator needed for the oscillator.
The 4-SMD, no-lead package (5.00mm x 3.20mm footprint) is a standard pinout that matches many MEMS and quartz oscillators, so a board layout change is not required if you later cross-reference to a different supplier.
The MEMS resonator does not exhibit the activity dips that quartz can show near 0°C, so the clock stays clean across the full range without a frequency trim.