Original Part
Alternative Part
1. ADM487EWARZ-REEL7 Substitution Conclusion
Conditional substitution is feasible, but the impact of reduced data rate and increased hysteresis must be evaluated. Compared to the original part, the primary differences are: the data rate is reduced from 1 Mbps to 250 kbps, making direct replacement unsuitable for systems requiring higher communication speeds, as it may create a communication bottleneck; its receiver hysteresis is significantly higher at 70 mV (versus 25 mV for the original), which greatly enhances noise and interference immunity—a distinct advantage in harsh electrical environments, as suggested by its "Automotive-grade" qualification; concurrently, its supply voltage range (4.75V to 5.25V) is narrower than the original's (4.5V to 5.5V), imposing stricter requirements on power supply accuracy and stability. If the system's required communication rate does not exceed 250 kbps and the power supply quality is adequate, this part, with its superior noise immunity, can be considered as an upgrade or a specialized alternative.
2. SP483EEN-L/TR Substitution Conclusion
Direct substitution is generally not recommended, with the primary bottleneck being degraded communication performance. The most critical technical shortcoming is its data rate of only 250 kbps—merely one-fourth of the original part's 1 Mbps capability. This severely limits the system's maximum communication capacity; replacement in scenarios where the original design may operate at full load could lead to communication failure or insufficient performance. Furthermore, its receiver hysteresis is 20 mV, slightly lower than the original's 25 mV, resulting in marginally weaker interference immunity and stability at the receiver under equivalent noise conditions. Its supply voltage range (4.75V to 5.25V) is also narrower than the original part's. In summary, unless the system's actual operating rate is well below 250 kbps and cost sensitivity is extremely high, substitution is not advised due to the mismatch in the core performance specification (data rate).
Analysis ID: 5806-348E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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