1. SIT8208AI-GF-18E-62.500000Y Substitution Conclusion Based on parameter comparison, the SIT8208AI-GF-18E-62.500000Y is fully consistent with the original model SIT8208AI-G1-18E-62.500000T in key specifications including package size, supply voltage (1.8V), output type (LVCMOS/LVTTL), functionality (Enable/Disable), and maximum operating current (31mA). This ensures direct pin‑to‑pin compatibility and electrical interface compatibility. The primary difference lies in the improved frequency stability, which has been enhanced from ±20ppm to ±10ppm. The new model offers higher timing accuracy under varying temperature and voltage conditions, making it suitable for systems with stricter requirements on clock jitter and long‑term stability, such as high‑speed communication or precision measurement applications. This improvement does not affect basic circuit compatibility. In applications where cost sensitivity is not a primary constraint and higher‑precision substitution is permissible, this model can directly replace the original one and may enhance overall system performance.