Original Part
62.5 MHz XO (Standard) LVCMOS, LVTTL Oscillator 3.3V Enable/Disable 4-SMD, No Lead
Alternative Part
62.5 MHz XO (Standard) LVCMOS, LVTTL Oscillator 2.5V Enable/Disable 4-SMD, No Lead
62.5 MHz XO (Standard) LVCMOS, LVTTL Oscillator 2.8V Enable/Disable 4-SMD, No Lead
1. SIT8208AI-G1-25E-62.500000Y Substitution Conclusion
Not a direct substitute. The key difference between this part and the original is its supply voltage of 2.5V versus the original's 3.3V. The high-level output voltage of its LVCMOS/LVTTL signals, derived from the 2.5V supply (typically ~2.4V), may fail to reliably meet the input high-level (VIH) threshold requirements of the receiving end in a system originally designed for 3.3V logic. This mismatch introduces risks of signal logic errors, timing instability, or communication failure. Therefore, direct substitution is not viable without modifying the receiver circuitry or implementing level translation.
2. SIT8208AI-G1-28E-62.500000T Substitution Conclusion
Not a direct substitute. The core discrepancy lies in the supply voltage: 2.8V for this model compared to 3.3V for the original. While 2.8V is closer to 3.3V than 2.5V, its typical high-level output (~2.7V) may still fall below the minimum VIH specification of some 3.3V systems, particularly those with stringent noise margin requirements. Under conditions of power supply fluctuation or environmental noise, this presents a reliability risk. From an engineering perspective focused on ensuring long-term system stability, direct substitution is not recommended unless it has been verified that the receiving IC can operate reliably with a 2.8V input signal level.
Analysis ID: 86AA-A78E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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