Original Part
Alternative Part
1. LTC485CS8TRPBF Substitution Conclusion
Substitution is feasible, but key performance differences must be considered. The LTC485CS8TRPBF is fully compatible with the original part in terms of interface protocol, duplex mode, supply voltage, and package. However, its receiver hysteresis is 70mV (compared to 20mV for the original part), providing improved noise immunity in harsh environments, though it may slightly increase signal threshold error. Additionally, its data rate is not explicitly specified (typical values are around 5Mbps), which is significantly lower than the original part’s 20Mbps. Therefore, this substitute is suitable only for medium- to low-speed communication scenarios and is not a direct replacement if the original system operates at high speeds.
2. ADM1485JRZ-REEL Substitution Conclusion
Fully substitutable with enhanced performance. The ADM1485JRZ-REEL is completely compatible with the original part in protocol, duplex mode, supply voltage, and package. It offers an increased data rate of 30Mbps (higher than the original part’s 20Mbps), supporting higher bandwidth communication. Its receiver hysteresis is also 70mV (original part: 20mV), which improves noise immunity while potentially slightly shifting signal response thresholds—though this generally does not affect standard RS-485 system operation. This model provides a speed upgrade while maintaining electrical compatibility, making it an ideal drop-in replacement.
Analysis ID: 7562-700E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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