Original Part
Alternative Part
1. ADM3490ARZ Substitution Conclusion
Direct substitution is not feasible. The primary discrepancies lie in the operating voltage (ADM3490ARZ is designed for 3.3V systems, whereas the original part operates at 5V) and receiver hysteresis (50mV for ADM3490ARZ versus 70mV for the original model). Voltage incompatibility would require redesigning the power supply and level‑matching circuitry; otherwise, proper operation cannot be guaranteed. The lower hysteresis indicates slightly weaker noise immunity in electrically noisy environments, which may compromise signal integrity.
2. ISL8490EIBZ-T Substitution Conclusion
Direct substitution is acceptable. Its operating voltage range (4.5V–5.5V) is fully compatible with the original part (4.75V–5.25V). Key parameters such as data rate (10 Mbps), hysteresis (70 mV), and package (8‑SOIC) are identical, confirming that the electrical characteristics and mechanical compatibility are closely matched. No circuit modifications are required for a functional replacement.
Analysis ID: E10A-64F0000
Based on part parameters and for reference only. Not to be used for procurement or production.
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