1. SIT8208AI-G1-18E-62.500000Y Substitution Conclusion The SIT8208AI-G1-18E-62.500000Y can directly replace the original part SIT8208AI-G2-18E-62.500000X, with superior key performance characteristics. Both models are fully compatible in core specifications: frequency (62.5 MHz), supply voltage (1.8V), output type (LVCMOS/LVTTL), package dimensions (4-SMD, 2.70mm x 2.40mm), and functionality (Enable/Disable) are identical. The only difference lies in frequency stability: the G1 version offers ±20ppm, which is better than the ±25ppm of the G2 version. The G1 exhibits smaller frequency deviation under variations in temperature and voltage, providing higher timing accuracy. This makes it more advantageous for applications with stringent signal integrity requirements, such as high-speed communication or precision synchronization systems. Given that the G1 meets both electrical and mechanical compatibility requirements, it can be directly substituted for the G2 without introducing risk and may even enhance system performance.