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Original Part

1/1 Transceiver Half RS422, RS485 8-SOIC

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Alternative Part

1/1 Transceiver Half RS422, RS485 8-SOIC

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1/1 Transceiver Half RS422, RS485 8-SO

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1. SN75HVD1176D Substitution Conclusion The SN75HVD1176D can serve as a high-performance, yet circuit-modification-required, substitute, provided functional and package compatibility are maintained. The most critical technical discrepancy is its 5V supply voltage versus the original part's 3.3V, necessitating a redesign of the power rail. Other related level-shifting interfaces within the system may also require adjustment. On the other hand, its data rate capability of 40Mbps significantly exceeds the original 10Mbps, offering headroom for high-speed applications while remaining fully compatible in legacy 10Mbps systems. Furthermore, its receiver hysteresis is 40mV, slightly lower than the original's 50mV. This may result in marginally reduced noise immunity in high-noise environments, though the impact is negligible in most standard applications. In summary, this substitution is not electrically "plug-and-play." The cost of modifying the power architecture must be evaluated.
2. LTC1482CS8PBF Substitution Conclusion The LTC1482CS8PBF represents a limited, downgrade substitution that also requires circuit modifications. Key differences include: its 5V supply voltage is incompatible with the original 3.3V part, mandating a change to the power scheme. Its data rate is limited to 4Mbps, substantially lower than the original 10Mbps. This substitution would constrain communication bandwidth and fail to meet the original design's high-speed transmission requirements. Additionally, its receiver hysteresis of 30mV is lower than the original 50mV, indicating weaker performance in rejecting signal jitter in harsh electrical environments. This part is only suitable for applications with lower speed requirements that can accommodate the power supply changes. It cannot serve as a performance-equivalent replacement.
Analysis ID: AC51-C42E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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