1. SIT8208AI-G2-25E-62.500000X Substitution Conclusion This part matches the original model (SIT8208AI-G2-28E-62.500000T) in all key parameters, including frequency, output type, package dimensions, frequency stability (±25 ppm), and current consumption. The primary deviation lies in the supply voltage: the original operates at 2.8 V, whereas the substitute is rated for 2.5 V. Direct substitution requires the system to provide a 2.5 V supply; otherwise, output level incompatibility may arise (LVCMOS/LVTTL logic thresholds can shift with voltage), potentially compromising signal integrity and circuit functionality. Feasibility depends on the target system’s power design—if the system can adapt to 2.5 V operation or incorporate a voltage regulator, substitution is viable. Otherwise, power compatibility must be re-evaluated to avoid performance risks.