Frequency stability and supply flexibility
The DSC8122BI2: Maximum current draw is 58 mA, which sets the power budget for the oscillator rail.
Programmable blank — user must program the frequency
This is a Blank (User Must Program) variant — the device ships without a pre-set frequency. The buyer programs it to the target frequency within the 10 MHz to 460 MHz range using Microchip's programming tools.
Active production and ordering
No pin-compatible second-source is listed on the manufacturer's cross-reference.