Dual-frequency MEMS oscillator in a 4-VDFN footprint
The DSC6121CI2A-00AR: The CMOS output eliminates the need for external termination resistors on short PCB traces, simplifying the layout for a dual-frequency clock tree that feeds a 24 MHz MCU and a 48 MHz peripheral bus from one oscillator.
Supply flexibility and power budget for mixed-voltage designs
Maximum supply current is 3 mA typical across both outputs, keeping the thermal contribution negligible in the 4-VDFN package and allowing the oscillator to share a lightly loaded LDO rail.
Industrial temperature grade and frequency stability
The MEMS resonator (base resonator type) provides faster start-up than a quartz crystal — typically under 5 ms — and is less sensitive to mechanical shock and vibration per the DSC61XX family datasheet.
Obsolete — sourcing through independent distribution
Microchip Technology lists the DSC6121CI2A-00AR as obsolete. No official successor order code is recorded in the lifecycle data. Available through independent surplus and broker channels. Quantities are lot-specific; current pricing and lead time are confirmed at RFQ.