1. LM358DMR2G Substitution Conclusion The LM358DMR2G is generally a viable substitute, but several key differences must be noted. It offers superior bandwidth (1 MHz) and output current (40 mA) compared to the original part. However, its input bias current (45 nA) is significantly higher than that of the LM2904 (20 nA). In circuits requiring high input impedance or processing weak current signals, this can introduce greater input error. Furthermore, its supply current (800 µA) is higher, leading to increased quiescent power consumption, which is undesirable for low-power applications. The output stage of the LM358 series is not a true rail-to-rail push-pull structure, especially when approaching the negative supply rail. In contrast, the LM2904 features a push-pull output. In single-supply applications where the output needs to swing close to ground, the LM358's sink current capability degrades sharply, potentially resulting in insufficient drive strength or waveform distortion.