1. NCV2904DMR2G Substitution Conclusion The NCV2904DMR2G can serve as a functional replacement for the LM258AWYPT in basic applications, but the following key differences must be considered: Its input offset voltage (7 mV) is significantly higher than that of the original part (1 mV), which may introduce greater error in applications requiring high-precision DC amplification. The input bias current (45 nA) is also higher, potentially affecting measurement accuracy with high-impedance signal sources. The quiescent current (1.5 mA per dual channel) is approximately double that of the original device (700 µA per dual channel), leading to increased system power consumption. Additionally, its output current capability (40 mA) is slightly lower, which may limit its ability to drive heavy loads. While both devices share similar supply voltage ranges (3–30 V vs. 3–32 V) and slew rates (0.6 V/µs), and the NCV prefix indicates that the NCV2904DMR2G meets automotive-grade standards, the substitution should be carefully evaluated if the application has strict requirements for precision, power consumption, or output drive capability. In general non-precision analog circuits—such as signal buffering or comparator functions—the substitution is typically acceptable.