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 2.8V Enable/Disable 4-SMD, No Lead
33 MHz XO (Standard) LVCMOS, LVTTL Oscillator 2.5V Enable/Disable 4-SMD, No Lead
1. SIT8208AI-G2-28E-33.000000Y Substitution Conclusion
Direct substitution is not recommended. The key difference between this part and the original part lies in the supply voltage, which has changed from 2.5V to 2.8V. It will not operate properly on a power rail originally designed for 2.5V (potential failure to start or failure to meet output level specifications). Forced use in a 2.5V system carries performance risks. Therefore, it cannot be considered a pin-compatible replacement unless the target system’s supply voltage matches the requirement.
2. SIT8208AI-GF-25E-33.000000T Substitution Conclusion
Substitution is acceptable with improved performance. The primary difference from the original part is the frequency stability, which has been enhanced from ±25ppm to ±10ppm. This provides higher clock accuracy and greater timing margin over the full operating temperature range, representing a positive upgrade in a critical parameter. Both parts share identical supply voltage, package dimensions, and interface logic, making them electrically and physically drop-in compatible. However, note that the suffix “T” versus “Y” may indicate differences in specific production or test flows.
Analysis ID: F3F2-248E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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