Original Part
Alternative Part
1. LTC1483IS8TRPBF Substitution Conclusion
The LTC1483IS8TRPBF can serve as a functional substitute for the SN75LBC182D, with key differences to note: its receiver hysteresis is 45 mV (compared to 70 mV for the original), which may slightly reduce noise immunity in electrically noisy or noise‑sensitive applications and could affect signal stability. Other core parameters—protocol (RS‑422/485), half‑duplex architecture, 1/1 driver/receiver count, data rate (250 kbps), and supply voltage range (4.75 V to 5.25 V)—match the original device. Package compatibility (8‑SOIC) is also maintained. Therefore, in applications where noise is well controlled or less critical, direct substitution is feasible.
2. LTC1481CS8TRPBF Substitution Conclusion
The LTC1481CS8TRPBF is compatible with the SN75LBC182D in terms of protocol, half‑duplex architecture, 1/1 driver/receiver count, and supply voltage range, and shares the same package. However, it offers a significantly higher data rate of 2.5 Mbps (versus 250 kbps for the original) while its receiver hysteresis is 45 mV (lower than the original’s 70 mV). The higher data rate makes it a better performer in high‑speed communication, but the reduced hysteresis may compromise noise margin. If the original system operates at a lower speed and in a high‑noise environment, direct substitution may require re‑evaluation of signal integrity. It can be considered a high‑performance alternative in high‑speed or well‑controlled noise applications; otherwise, careful validation is recommended.
Analysis ID: 55D1-FF16000
Based on part parameters and for reference only. Not to be used for procurement or production.
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