Original Part
Alternative Part
1. ADM3485EARZ-REEL Substitution Conclusion
Not a direct substitute. The most critical discrepancy is its operating voltage of 3.3V (3V to 3.6V), compared to the original part's 5V (4.75V to 5.25V). This means that if directly swapped into a 5V system, the IC risks damage or malfunction, necessitating a redesign of the circuit's power supply. Furthermore, its data rate (10Mbps) is only half that of the original (20Mbps), which may fail to meet the original system's communication bandwidth requirements. Although its receiver hysteresis (50mV) is greater than the original's (20mV), offering an advantage in noise immunity, the fundamental mismatch in voltage and speed renders it unsuitable as a direct replacement.
2. ADM1485ARZ-REEL Substitution Conclusion
Essentially a direct substitute with some superior performance characteristics. Both parts share an identical operating voltage range (4.75V to 5.25V), ensuring full power supply compatibility. The ADM1485ARZ-REEL offers a higher data rate (30Mbps) than the original (20Mbps), meaning greater communication bandwidth headroom that fully covers the original application's needs. Its receiver hysteresis (70mV) is significantly higher than the original's (20mV), indicating stronger noise immunity and reliability in harsh communication environments with signal distortion and interference. Given identical package and core functionality, this part represents a qualified, performance-enhanced alternative.
Analysis ID: 5E89-E68B000
Based on part parameters and for reference only. Not to be used for procurement or production.
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