2. LM258D Substitution Conclusion The LM258D can only be considered as a replacement in applications with non-critical dynamic performance requirements, and its use requires careful evaluation. Compared to the original part, its slew rate remains severely inadequate (0.3 V/µs vs. 2.1 V/µs), which will cause significant distortion when processing fast-changing signals. Its maximum supply voltage, while slightly improved, is still limited (32V vs. 44V) and cannot cover the full voltage range of the original part. Although its bandwidth (1.1 MHz) is closer to the original than the LM358D's, and its static parameters like input bias current are similar, the core dynamic response deficiency prevents it from directly replacing the MC33172 in applications involving audio, sensor signal conditioning, or control loops requiring fast response. Substitution may be considered only if the application involves DC or very low-frequency signals and operates below 32V; otherwise, it is not recommended.