Obsolete MEMS oscillator — sourcing path for existing BOM lines
The DSC6121CI1A-0043T is marked Obsolete by Microchip Technology, meaning the manufacturer has discontinued production with no last-time-buy window remaining.
Dual-frequency output in a MEMS resonator platform
The dual-output architecture means a single device can clock two different logic domains (e.g., a 20 MHz MCU core and a 24 MHz USB peripheral) without a second oscillator or a PLL multiplier.
Supply voltage, temperature, and power envelope
Maximum supply current is 3 mA typical across both outputs — the low draw suits battery-powered or thermally constrained designs where every milliamp matters.
4-VDFN package and board integration
The 4-pin VDFN has a standard land pattern; the centre pad is not electrically connected, so no thermal-via array is required under the package.