Original Part
Alternative Part
1. LM258DRG4 Substitution Conclusion
Substitution is feasible, though certain voltage conditions require attention. The LM258DRG4 is identical to the original part in all key performance parameters, including bandwidth, slew rate, input bias current, offset voltage, and package. The primary difference lies in its maximum supply voltage rating of 32V, which is higher than the original's 26V. In applications where the original design operates at or below 26V, the LM258DRG4 can be used as a direct drop-in replacement, providing additional voltage margin. However, if the original design was operating near its 26V voltage limit, post-substitution verification is necessary to ensure system safety at the higher available voltage—specifically regarding power dissipation and device voltage withstand capability—to prevent potential risks.
2. LM2904DRG4 Substitution Conclusion
Direct substitution is acceptable. The LM2904DRG4 is fully equivalent to the original part (LM2904VQDR) across all listed critical parameters, including supply voltage range (3V to 26V), quiescent current, bandwidth, slew rate, and package outline. The only distinction is the manufacturer (TI versus Rohm). As such, the two devices are completely compatible in both electrical performance and mechanical dimensions, representing a standard second-source relationship. In the vast majority of applications, they can be interchanged without requiring design revalidation.
Analysis ID: B72E-CC8F000
Based on part parameters and for reference only. Not to be used for procurement or production.
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