Original Part
Alternative Part
1. ADM1485ARZ-REEL Substitution Conclusion
From the perspective of core electrical parameters, package, and functionality, the ADM1485ARZ-REEL can serve as a complete drop-in replacement for the SP1485EEN-L. Both are 5V-powered, half-duplex, single-transceiver/single-receiver RS-422/485 transceivers with pin-to-pin compatibility (8-SOIC). The primary differences are that the ADM1485ARZ-REEL offers a higher data rate (30 Mbps vs. 20 Mbps), providing greater bandwidth headroom for high-speed communication applications, and features significantly higher receiver hysteresis (70 mV vs. 20 mV). This indicates the new device has superior noise immunity, enabling more reliable signal detection in noisy industrial environments and reducing false triggering. These differences represent performance enhancements that do not introduce compatibility issues, making the substitution technically feasible and beneficial for improving system robustness.
2. ADM1485ARZ-REEL7 Substitution Conclusion
The ADM1485ARZ-REEL7 is identical to the ADM1485ARZ-REEL in electrical performance and substitution feasibility, essentially representing the same die in a different packaging format (REEL7 typically denotes a 7-inch reel, while REEL may refer to a 13-inch or standard reel). The substitution conclusion remains the same: it can fully replace the SP1485EEN-L. Like the ADM1485ARZ-REEL, it holds the same key performance advantages over the original part—higher data rate (30 Mbps vs. 20 Mbps) and greater receiver hysteresis (70 mV vs. 20 mV)—which translate to higher potential communication speed and improved noise immunity. In circuit design, the two are directly interchangeable; the selection depends solely on the packaging requirements for production assembly.
Analysis ID: 6BFB-BDC0000
Based on part parameters and for reference only. Not to be used for procurement or production.
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