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 2.8V Enable/Disable 4-SMD, No Lead
62.5 MHz XO (Standard) LVCMOS, LVTTL Oscillator 2.8V Enable/Disable 4-SMD, No Lead
1. SIT8208AI-G1-28E-62.500000X Substitution Conclusion
Not a direct drop-in replacement. The critical discrepancy lies in the operating voltage: the original part is rated for 3.3V, whereas this device is specified for 2.8V. Deploying this component in a circuit designed for a 3.3V supply rail will result in a supply voltage mismatch. This can prevent the oscillator from starting up reliably, cause insufficient output logic level swing (failing to meet the minimum high-level threshold for LVCMOS), and subsequently lead to timing errors or clock signal recognition failures in downstream ICs. Although both parts are identical in frequency, stability, package footprint, and functionality, the fundamental difference in core supply voltage constitutes a critical compatibility barrier.
2. SIT8208AI-G1-28E-62.500000Y Substitution Conclusion
Not a direct drop-in replacement. The conclusion is identical to the model above, with the same discrepancy in operating voltage (2.8V vs. the original 3.3V). This device is incompatible with the power rail required by the original design. Forcing a substitution would lead to performance failure due to insufficient supply voltage. The difference in suffix ("X" vs. "Y"—likely indicating an internal manufacturing code or an unlisted minor characteristic variation) is not the primary concern in this context. The decisive factor preventing substitution remains the voltage mismatch between 2.8V and 3.3V.
Analysis ID: 7404-3E0F000
Based on part parameters and for reference only. Not to be used for procurement or production.
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