1. BU7487F-E2 Substitution Conclusion Direct substitution with the BU7487F-E2 is not highly feasible. The primary obstacles are fundamental differences in its quiescent current and output drive capability compared to the original part. The BU7487F-E2's supply current is as high as 6mA, which is over four times that of the original LMV324BG-13 (~1.36mA for 4 channels). This would lead to a significant increase in energy consumption in battery-powered or low-power applications. Furthermore, its output current of 12mA per channel is far lower than the original's 90mA, rendering it incapable of driving loads of similar magnitude, such as directly driving LEDs or small motors. Although it offers clear advantages in small-signal performance parameters like bandwidth (10 MHz vs. 1 MHz), slew rate (10V/µs vs. 1V/µs), and input bias current (1 pA vs. 15 nA), the severe mismatch in these critical specifications limits its suitability to high-bandwidth signal conditioning scenarios where power consumption is not a concern and the load is extremely light. It cannot serve as a general-purpose direct replacement.