Original Part
Alternative Part
1. SN65LBC176AD Substitution Conclusion
The SN65LBC176AD can generally replace the LTC1481CS8TRPBF, though key performance differences must be noted. Both are 5V-powered, half-duplex, 1/1 transceivers with compatible packages (8-SOIC). However, the SN65LBC176AD offers a significantly higher data rate (30 Mbps) compared to the original part (2.5 Mbps), providing an advantage in high-speed applications. Its receiver hysteresis (50 mV) is slightly greater than that of the original (45 mV), resulting in marginally better noise immunity. When substituting, ensure the actual application’s data rate and circuit impedance matching meet high-speed signal integrity requirements. If the original design targets low-speed operation, direct substitution is typically acceptable.
2. SN65LBC176AQD Substitution Conclusion
The SN65LBC176AQD shares identical electrical parameters with the SN65LBC176AD (30 Mbps data rate, 50 mV hysteresis), differing only in the suffix (typically indicating temperature range or packaging). Therefore, the substitution conclusion is the same as for the AD version: it can essentially replace the original part. Special attention should be paid to signal integrity challenges arising from the increased data rate. If the original system layout or termination is not optimized for high-frequency operation, design adjustments may be required. Provided there are no special temperature requirements (such as an extended industrial temperature range), the two parts are directly interchangeable.
Analysis ID: 1061-28DB000
Based on part parameters and for reference only. Not to be used for procurement or production.
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