Active production – ready to quote
The DSC1001AI2-018.4320T: This is a current-production MEMS oscillator, not a legacy quartz part being phased out.
18.432 MHz with ±25 ppm stability
For a 18.432 MHz clock, that is about 461 Hz of total allowable drift — tight enough for UART baud-rate generation and most MCU clock trees without external trim capacitors.
AEC-Q100 automotive qualification
Rated AEC-Q100 — this is the automotive IC stress qualification.
Standby power-down mode
Active draw is 6.3 mA max at 1.8V to 3.3V supply — the disable current is low enough that a coin cell can keep the oscillator in standby for months without draining the battery.
MEMS vs quartz – direct swap?
The output is CMOS, same as a standard quartz oscillator. Package is 4-SMD, No Lead Exposed Pad, 7.00mm x 5.00mm — the same footprint as many 7x5 mm quartz XOs. In most designs it is a drop-in replacement, but check the enable/disable logic polarity and the start-up time in the datasheet; MEMS oscillators often have faster start-up than quartz.