Original Part
Alternative Part
1. ADM3485EARZ-REEL Substitution Conclusion
Direct substitution is not recommended. While the package and protocol are compatible, the ADM3485 operates from a 3.0V–3.6V supply, whereas the original part is specified for 5V operation (4.75V–5.25V). This voltage mismatch may cause communication faults or potential device damage. Additionally, the ADM3485 offers higher data rate capability (10 Mbps vs. 4 Mbps) and larger receiver hysteresis (50 mV vs. 30 mV). Although these represent performance improvements, if the original system design relies on 5V signal levels or specific noise margins, direct replacement would require re-evaluation of the power supply design and signal integrity. Therefore, substitution feasibility is low.
2. ADM483EARZ-REEL Substitution Conclusion
Substitution is feasible under specific conditions. The ADM483 operates from a 4.5V–5.5V supply, which aligns well with the original part's voltage range, ensuring good electrical compatibility. However, its data rate is lower (250 kbps vs. 4 Mbps), limiting its use to low-speed communication applications. Its higher receiver hysteresis (70 mV vs. 30 mV) may improve noise immunity but could reduce signal sensitivity. If the original application does not require data rates above 250 kbps and the supply voltage range is acceptable, substitution is possible. Otherwise, due to the speed limitation, it is not suitable for high-speed communication systems.
Analysis ID: 8B68-01DE000
Based on part parameters and for reference only. Not to be used for procurement or production.
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