Original Part
33 MHz XO (Standard) LVCMOS, LVTTL Oscillator 2.5V Enable/Disable 4-SMD, No Lead
Alternative Part
33 MHz XO (Standard) LVCMOS, LVTTL Oscillator 2.5V Enable/Disable 4-SMD, No Lead
33 MHz XO (Standard) LVCMOS, LVTTL Oscillator 1.8V Enable/Disable 4-SMD, No Lead
1. SIT8208AI-G1-25E-33.000000Y Substitution Conclusion
This part number represents a direct and superior drop-in replacement. The key performance distinction from the original part is an improvement in frequency stability from ±25ppm to ±20ppm, which provides higher frequency accuracy across the full operating temperature range and offers greater timing margin. This constitutes an upward-compatible enhancement of the performance specifications. Both devices are identical in terms of operating voltage (2.5V), package footprint, output logic level, and functionality. Therefore, they can be directly substituted without any circuit modifications, potentially yielding improved system timing performance.
2. SIT8208AI-G2-18E-33.000000T Substitution Conclusion
This part number is not a direct substitute due to a critical operating voltage incompatibility. Its operating voltage is 1.8V, compared to 2.5V for the original part, placing them in entirely different power domains. Forced substitution risks damaging the 1.8V device if subjected to a 2.5V supply. Even if powered correctly at 1.8V, its LVCMOS output logic high level (approximately 1.8V) may fail to reliably trigger the system logic designed for 2.5V levels, potentially causing communication failures or system instability. Although the frequency and package are identical, the voltage mismatch presents a fundamental hardware compatibility barrier.
Analysis ID: 8153-6C53000
Based on part parameters and for reference only. Not to be used for procurement or production.
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