Original Part
Alternative Part
1. ISL32478EIBZ Substitution Conclusion
The ISL32478EIBZ is functionally compatible with the ADM487EWARZ-REEL7 as a half-duplex RS422/RS485 transceiver in the same package. Key differences include a significantly higher data rate (15 Mbps vs. 250 kbps), lower receiver hysteresis (25 mV vs. 70 mV), a wider supply voltage range (4.5V to 5.5V vs. 4.75V to 5.25V), and the absence of automotive-grade qualification. The higher data rate makes it suitable for high-speed communication applications. However, the lower hysteresis reduces noise immunity, which may increase the risk of false triggering in noisy environments. The wider supply range offers design flexibility, but the lack of an automotive-grade rating makes it unsuitable for applications requiring high-reliability automotive standards. In summary, the ISL32478EIBZ can serve as a substitute in non-automotive, high-speed applications with well-controlled noise, provided that noise immunity is evaluated and the application environment aligns with its industrial-grade specifications.
2. ISL32492EIBZ Substitution Conclusion
The ISL32492EIBZ matches the ADM487EWARZ-REEL7 in data rate (250 kbps) and package. However, it features lower receiver hysteresis (25 mV vs. 70 mV), a wider supply voltage range (4.5V to 5.5V vs. 4.75V to 5.25V), and is not specified as automotive-grade. The reduced hysteresis compromises noise immunity, potentially increasing bit error rates in electrically noisy environments. The wider supply range improves power supply tolerance, but the lack of automotive certification prevents its use in applications with stringent reliability and temperature range requirements typical of automotive electronics. For industrial or commercial applications where noise is well-managed and high hysteresis robustness is not critical, the ISL32492EIBZ can serve as a functional replacement. However, if the original design targets automotive or high-noise conditions, system stability should be retested to avoid performance degradation.
Analysis ID: AF3B-E2EF000
Based on part parameters and for reference only. Not to be used for procurement or production.
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