2. SIT8208AI-GF-28E-62.500000T Substitution Conclusion This model is a direct, drop-in replacement for the original component at both the electrical and physical levels, offering superior performance. The key difference is a significant improvement in frequency stability, from the original ±25ppm to ±10ppm. Under varying environmental conditions such as temperature and voltage fluctuations, this substitute exhibits a tighter maximum deviation range in output clock frequency. It thereby provides a higher-precision, more stable timing reference, enhancing the overall system timing margin and reliability. Both parts share identical supply voltage (2.8V), package footprint, enable function, and output logic levels. This qualifies it as an upgrade option within the same package and voltage family, though the associated potential cost increase should typically be considered.