Microchip's DSC1004CL2-003.2768T is a 3.2768 MHz MEMS-based XO (Standard) that outputs a CMOS-level clock from a 1.8V to 3.3V supply rail — no external load capacitor or crystal needed. The MEMS resonator is sealed in a 4-VDFN package measuring 3.20mm x 2.50mm, which simplifies layout compared to a quartz crystal plus oscillator circuit.
Sourcing and lifecycle — active, design-in ready
The 8 mA maximum supply current is consistent across the temperature band — a MEMS resonator does not exhibit the frequency vs. temperature inflection that a quartz AT-cut crystal requires compensation for. The ±25 ppm absolute pull range sets the frequency accuracy over the full voltage and temperature envelope — for a 3.2768 MHz clock, this is ±82 Hz, which is well within the tolerance for a UART baud-rate generator or an MCU sleep timer.