Original Part
Alternative Part
1. LTC1482CS8TRPBF Substitution Conclusion
Direct substitution is not feasible. The most critical discrepancy lies in the supply voltage: the LTC1485EARZ is designed for 3.3V systems (3V–3.6V), whereas the LTC1482CS8TRPBF operates on a 5V supply (4.75V–5.25V). Direct replacement would result in supply incompatibility and potential device damage. Additionally, the data rate drops from 10 Mbps to 4 Mbps, significantly reducing communication bandwidth and rendering it unsuitable for high‑speed applications. Furthermore, receiver hysteresis is reduced from 50 mV to 30 mV, slightly degrading noise immunity in the same noise environment. Although the package is identical and the protocol is compatible, the mismatch in core electrical parameters makes substitution impractical unless the system is modified to adjust the supply voltage and relax the speed requirement.
2. LTC1482IS8PBF Substitution Conclusion
Similarly, direct substitution is not recommended. This model shares the same key parameters with the LTC1482CS8TRPBF (5V supply, 4 Mbps data rate, 30 mV hysteresis). The only distinction is the operating temperature range—the “I” suffix denotes industrial grade (typically –40°C to 85°C), while “C” indicates commercial grade (0°C to 70°C)—which does not fundamentally affect substitution feasibility. The primary obstacles remain the supply voltage and data rate incompatibility: if the original design is intended for a 3.3V/10 Mbps application, this model likewise cannot meet the requirements. It could only be considered as an alternative if the system can accommodate a 5V supply and accept the reduced data rate, while also noting that the lower hysteresis may impact noise margin.
Analysis ID: 3DBC-0AC9000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com