Original Part
Alternative Part
1. ADM3485EARZ-REEL Substitution Conclusion
The ADM3485EARZ-REEL is not technically suitable for directly replacing the LTC1484IS8TRPBF due to differences in supply voltage (3V–3.6V vs. 4.75V–5.25V), data rate (10Mbps vs. 4Mbps), and receiver hysteresis (50 mV vs. 30 mV). The ADM3485 requires a 3.3V supply system, whereas the original device is designed for 5V. Direct substitution could lead to incompatibility or damage unless the power supply is redesigned or a level translator is added. The higher data rate of the ADM3485 indicates stronger performance, but if the existing system only supports 4Mbps, signal integrity must be verified for compatibility. Increased receiver hysteresis improves noise immunity, though it may slightly reduce receiver sensitivity. Substitution should only be considered if the system can adapt to a 3.3V supply and maintain data rate compatibility; otherwise, direct replacement is not recommended.
2. ADM3485EARZ-REEL7 Substitution Conclusion
The ADM3485EARZ-REEL7 shares identical technical specifications with the ADM3485EARZ-REEL, and therefore the substitution conclusion remains the same: it is not suitable for directly replacing the LTC1484IS8TRPBF. The key differences likewise lie in supply voltage (3V–3.6V vs. 4.75V–5.25V), data rate (10Mbps vs. 4Mbps), and receiver hysteresis (50 mV vs. 30 mV). The system supply must be adjusted to 3.3V; otherwise, the device will not operate. The data rate difference shows that the ADM3485 series can support higher-speed communication, but the existing circuit must be verified to handle 10Mbps. Increased receiver hysteresis enhances noise immunity. The ADM3485EARZ-REEL7 may only differ in packaging (e.g., reel specifications), which does not affect electrical characteristics. Thus, substitution feasibility depends on power supply and data rate compatibility, and evaluation is recommended after appropriate system modifications.
Analysis ID: 1179-4838000
Based on part parameters and for reference only. Not to be used for procurement or production.
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