1. Core Part Number Discrepancy: The sole distinguishing identifier is the 'L' versus 'V' in the part number. According to CTS naming conventions, the letter in this position typically correlates to the revision/part number of the internal die or a key component. The two versions likely utilize different lots or sources for the core oscillator IC or compensation circuitry. 2. Practical Implications of the Difference: This difference does not directly affect nominal electrical parameters (e.g., frequency, stability, current). However, it may indicate: Manufacturing Process or Wafer Source Update: The 'V' revision likely represents a newer design iteration or a minor material change. Refinement of Unspecified Parameters: There may be subtle optimizations in characteristics not detailed in the basic datasheet, such as startup behavior, phase noise, or long-term aging rate. Quality and Consistency: The newer ('V') revision may incorporate internal optimizations targeting manufacturing yield or enhanced reliability. Summary: For applications focused solely on functionality and direct parametric matching, the two components are equivalent substitutes. For projects with stringent requirements regarding product lifecycle, long-term reliability, or potential secondary performance characteristics, it is advisable to prioritize the newer ('V') version and consult the manufacturer to confirm the specifics of the change.