Original Part
Alternative Part
1. ISL3172EIUZ-T Substitution Conclusion
Direct substitution is not feasible. While the package, supply voltage, and protocol are compatible, the ISL3172EIUZ-T supports a data rate of only 250 kbps, which is significantly lower than the original part’s 20 Mbps, rendering it unsuitable for high-speed communication applications. Additionally, its receiver hysteresis (15 mV) is narrower than that of the original device (25 mV), resulting in reduced noise margin and a higher risk of bit errors in electrically noisy environments. This substitute is only acceptable for low-speed, low-noise applications.
2. ISL3178EIUZ-T Substitution Conclusion
This device is essentially a drop-in replacement, though noise immunity should be considered. The ISL3178EIUZ-T matches the original part in data rate (20 Mbps), supply voltage, package, and protocol compatibility. The key difference lies in its receiver hysteresis of 15 mV, compared to 25 mV for the original, which may slightly degrade signal integrity under high-noise conditions. The actual noise environment should be evaluated before adoption. If noise immunity is not a critical requirement, this part can be used as a substitute.
Analysis ID: 6A87-97AD000
Based on part parameters and for reference only. Not to be used for procurement or production.
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