2. SIT8208AI-G1-28E-62.500000T Substitution Conclusion This model matches the original in core parameters: frequency, output type, frequency stability, package, and dimensions. The primary deviation is an increase in supply voltage from 2.5V to 2.8V, with minor differences in operating and disabled currents (33mA max vs. 33mA max, essentially equivalent). Direct use in the original 2.5V system may prevent proper startup or cause unstable output due to undervoltage, as the 2.8V-rated device may not reach its operational threshold at 2.5V. Additionally, the higher output logic level (~2.8V) poses an overvoltage risk to the receiving circuitry. Feasibility of substitution depends on the system's ability to adjust the supply to 2.8V and the receiver's tolerance for the higher logic level. Substitution is possible only if both power adjustment and level tolerance are confirmed; otherwise, direct replacement is not viable.