AEC-Q100 Grade and temperature range
The DSC1221CI3-148M5000T: The OEM auditor will ask for PPAP documentation; the AEC-Q100 listing on the datasheet gives you the traceable qualification data package.
148.5 MHz CMOS output and supply flexibility
148.5 MHz is a standard pixel clock for 1080p video formats and a common reference for 1 GbE and automotive Ethernet PHYs. CMOS output drives a single-ended clock tree without external termination. The 2.5 V to 3.3 V supply range lets the same BOM position serve both 2.5 V and 3.3 V I/O banks — one line item, two voltage domains.
MEMS resonator versus quartz
6-VDFN package, 3.20 mm x 2.50 mm body, 0.90 mm seated height — fits the same land pattern as standard 3.2 x 2.5 mm quartz oscillators.