Original Part
Alternative Part
1. ISL32472EIBZ-T Substitution Conclusion
This device is fully compatible with the original ADM487EWARZ in terms of package, basic functionality, and rated data rate (250 kbps). However, its receiver hysteresis (25 mV) is significantly lower than that of the original part (70 mV). Under identical noise conditions, this results in weaker noise immunity and reduced noise margin, which may compromise communication stability. Additionally, its supply voltage range (4.5 V to 5.5 V) is slightly wider than the original (4.75 V to 5.25 V), offering better adaptability, but it lacks explicit "automotive-grade" certification. For automotive or high-reliability industrial applications, additional qualification assessment is required. Overall, in general-purpose applications where noise conditions are not stringent and there is no mandatory requirement for operating temperature grade, it can serve as a direct replacement, but noise immunity should be validated in the actual system.
2. ISL32475EIBZ-T Substitution Conclusion
This device is package-compatible and supports the same base protocol as the original, with a higher data rate (1 Mbps vs. 250 kbps), providing an advantage in applications requiring greater communication bandwidth. However, its receiver hysteresis is also only 25 mV (significantly lower than the original part’s 70 mV), posing a risk of degraded noise rejection that may affect reliability in long-distance or electrically noisy environments. The supply voltage range (4.5 V to 5.5 V) is wider, but similarly, no automotive-grade qualification is explicitly stated. If the application does not demand high noise immunity and benefits from increased transmission speed, substitution can be considered, but the impact of reduced hysteresis on signal integrity must be evaluated, and compliance with system requirements for ambient temperature and reliability grade must be confirmed.
Analysis ID: 72F6-10E4000
Based on part parameters and for reference only. Not to be used for procurement or production.
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