Original Part
Alternative Part
1. ADM3485EARZ-REEL Substitution Conclusion
The ADM3485EARZ-REEL is not a viable substitute, primarily due to a supply voltage mismatch (3V to 3.6V versus the original 5V system). This means it cannot operate directly in the original 5V power environment and risks device damage or functional failure. Although its higher receiver hysteresis (50 mV versus 20 mV) provides stronger noise immunity, the voltage discrepancy is a fundamental barrier. It cannot be used unless the entire system is redesigned for 3.3V operation.
2. ADM1485ARZ-REEL Substitution Conclusion
The ADM1485ARZ-REEL can serve as a direct replacement, as its supply voltage (5V system) and package (8-SOIC) are fully compatible with the original part. Differences include a higher data rate (30 Mbps versus 10 Mbps), offering improved transmission performance suitable for high-speed applications, and greater receiver hysteresis (70 mV versus 20 mV), which enhances noise immunity. However, this may slightly reduce sensitivity to weak signals, so adequate signal amplitude must be ensured to avoid bit errors.
Analysis ID: 2065-6A8D000
Based on part parameters and for reference only. Not to be used for procurement or production.
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