Original Part
Alternative Part
1. ADM1485JRZ-REEL Substitution Conclusion
Direct substitution is not recommended; system compatibility must be evaluated. The key differences between this part and the original are the supply voltage (5V vs. 3.3V) and data rate (30Mbps vs. 10Mbps). The voltage mismatch requires power supply redesign—otherwise, device damage or failure may occur. While the higher data rate and increased receiver hysteresis (70mV vs. 20mV) offer improved noise immunity and transmission bandwidth, they could introduce signal integrity issues such as overshoot in the original 10Mbps system. Circuit matching should be verified before implementation.
2. ADM3485EARZ-REEL Substitution Conclusion
Direct substitution is feasible with performance benefits. This device matches the original in supply voltage (3.3V), data rate (10Mbps), and package, ensuring full electrical compatibility. The primary improvement is higher receiver hysteresis (50mV vs. 20mV), which provides enhanced noise immunity under identical operating conditions and increases communication reliability. No modifications to the existing circuit design are required.
Analysis ID: 5F91-413E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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