The DSC6112JI1B-060.0000T: It belongs to the DSC61XXB series, which targets applications where a quartz crystal's mechanical fragility or long lead times are a concern.
Supply flexibility and standby power discipline
Typical active current is 3 mA max; the standby (power-down) mode drops that to 1.5 µA typical, trimming the quiescent draw in battery-backed or ignition-off states. Standby is activated through the enable pin — the oscillator stops and the output goes high-impedance, so the downstream clock tree sees a clean disconnect rather than a stuck logic level.
AEC-Q100 qualification and the MEMS reliability argument
The MEMS die is hermetically sealed at the wafer level, so the oscillator's frequency does not drift from moisture ingress the way a quartz crystal can in a non-hermetic package.