Original Part
Alternative Part
1. ISL4485EIBZ Substitution Conclusion
The ISL4485EIBZ can directly replace the SN75176ADG4 in terms of function, package, and protocol, while offering superior technical parameters: its receiver hysteresis voltage is higher (70mV vs. 50mV), providing greater noise immunity and signal stability; the data rate is explicitly specified up to 20Mbps, exceeding the unlabeled typical rate of the SN75176ADG4 (usually ≤10Mbps); and its supply voltage range is wider (4.5V–5.5V vs. 4.75V–5.25V), offering better tolerance to power supply fluctuations. Barring specific timing or drive strength requirements, it can be used as a drop-in replacement and may enhance system robustness.
2. ISL8485ECBZ Substitution Conclusion
The ISL8485ECBZ also maintains pin compatibility and protocol consistency, but it is important to note its maximum data rate is 10Mbps. If the original circuit operates at higher frequencies (e.g., near 20Mbps), this substitution may not be suitable. Its receiver hysteresis voltage (70mV) and wider voltage range (4.5V–5.5V) are advantageous over the original part, improving noise rejection and supply adaptability. For medium-to-low speed applications not exceeding 10Mbps, it can be directly substituted, enhancing interference immunity. If the original system operates at its maximum rated speed, signal integrity risks should be evaluated.
Analysis ID: C0A6-2CFA000
Based on part parameters and for reference only. Not to be used for procurement or production.
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