1. SP483EEN-L/TR Substitution Conclusion The SP483EEN-L/TR can serve as a substitute for the SN65HVD08DR, but system compatibility must be carefully evaluated. Key differences include: - Operating Voltage Range: The SN65HVD08DR supports a wide voltage range of 3V to 5.5V, making it suitable for both 3.3V and 5V systems. The SP483EEN-L/TR is limited to 4.75V–5.25V, strictly for 5V systems; direct substitution is not feasible if the original design operates at 3.3V. - Receiver Hysteresis: The SN65HVD08DR offers 35mV of hysteresis, higher than the 20mV of the SP483EEN-L/TR. This provides the former with better noise immunity and higher reliability in electrically noisy environments. - Data Rate: The SP483EEN-L/TR is clearly rated for 250kbps, while the SN65HVD08DR does not specify a maximum rate—its datasheet should be referenced. If the original application requires higher speeds, verify that the SP483EEN-L/TR meets the requirement before substitution. In summary, if the system operates at 5V and the data rate is ≤250kbps, the SP483EEN-L/TR can be used as a replacement. However, note that stability may be reduced in noisy conditions. If the design involves wide voltage operation or requires high noise immunity, substitution carries risks.