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 3.3V Enable/Disable 4-SMD, No Lead
62.5 MHz XO (Standard) LVCMOS, LVTTL Oscillator 2.5V Enable/Disable 4-SMD, No Lead
1. SIT8208AI-G1-33E-62.500000Y Substitution Conclusion
The SIT8208AI-G1-33E-62.500000Y is technically feasible as a substitute for the original SIT8208AI-G2-33E-62.500000T, as both share identical core specifications: a frequency of 62.5 MHz, a 3.3V supply voltage, LVCMOS/LVTTL output, the same package footprint, identical enable/disable functionality, and a maximum operating current of 33mA. The primary difference lies in frequency stability: the G1 variant offers ±20ppm, compared to ±25ppm for the original model. The tighter ±20ppm tolerance of the G1 represents a performance upgrade, providing higher frequency accuracy and lower deviation under temperature variations. This difference generally does not introduce compatibility issues, as a stricter stability specification (±20ppm) is backward compatible with a looser one (±25ppm). It is particularly suitable for applications with more stringent timing requirements, such as high-speed communication or precision timing systems. However, potential variations in cost or supply chain availability should be noted.
2. SIT8208AI-G2-25E-62.500000T Substitution Conclusion
The SIT8208AI-G2-25E-62.500000T is not a viable drop-in replacement for the original SIT8208AI-G2-33E-62.500000T due to a critical compatibility issue, unless the circuit design is specifically adapted. The discrepancy is in the supply voltage: the G2-25E operates at 2.5V, whereas the original requires 3.3V. This results in different output logic levels: the 2.5V LVCMOS/LVTTL signals have lower voltage swings and may not properly interface with downstream circuitry designed for 3.3V levels, potentially causing signal recognition errors or timing failures. While other parameters—such as the 62.5 MHz frequency, ±25ppm stability, package, and functionality—are identical, the voltage mismatch is fundamental. Without additional level shifting or power supply adjustment, direct substitution risks device damage or compromised system reliability, especially in high-speed or noise-sensitive applications.
Analysis ID: 5A36-248B000
Based on part parameters and for reference only. Not to be used for procurement or production.
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