2. MAX1483ESA+ Substitution Conclusion The MAX1483ESA+ is not a direct replacement for the ADM488ARZ-REEL, as it is a half-duplex transceiver, whereas the original part is full-duplex. This fundamental change in communication mode—from bidirectional simultaneous transmission to unidirectional time-division transmission—would likely require a redesign of the system software protocol and hardware control logic (e.g., the direction control pin). Although their electrical parameters (such as data rate and supply range) are similar, and the MAX1483ESA+ offers a slightly higher receiver hysteresis (75mV vs. 70mV) for improved noise immunity, the change in duplex mode precludes its direct use in an existing full-duplex architecture. It is only suitable for new designs or retrofitted systems where half-duplex communication is acceptable.