The DSC6112JI1A-000.0000: The available frequency range is 1 MHz to 100 MHz, so the same blank part can be programmed to any frequency in that band.
The 4-pin footprint is standard for MEMS oscillators — pin 1 is OE/STANDBY, pin 2 GND, pin 3 output, pin 4 VDD. No exposed pad; the package relies on the PCB land pattern for thermal dissipation, which is adequate given the sub-3 mA draw. Surface-mount mounting with tube packaging. The blank-programmable nature means the oscillator is shipped without a frequency programmed — the buyer must use Microchip's TimeFlash or a compatible programmer to set the output frequency before reflow. Factor this into the assembly flow; the part cannot be used as a drop-in fixed-frequency oscillator out of the tube.