Dual-frequency MEMS oscillator in a 2.5 mm package
The DSC6121JI2A-0042: Unlike a quartz crystal oscillator, the MEMS resonator is etched silicon, which means the frequency is set during programming rather than by a mechanical blank — the same die can produce either output without changing the crystal blank.
Supply and temperature envelope
Typical supply current is 3 mA max — low enough that a 100 mA LDO can power the oscillator plus several other ICs on the same rail without headroom issues.
Obsolete — sourcing through independent channels
For existing BOM lines, this part is available through independent surplus and broker channels.