1. BU7487F-E2 Substitution Conclusion Based on core functionality (4-channel, rail-to-rail output) and supply voltage range, the BU7487F-E2 can serve as a direct replacement for the LMV324ID. However, significant differences exist in its key parameters. This part offers superior speed performance (slew rate of 10 V/µs vs. 1 V/µs, bandwidth of 10 MHz vs. 1 MHz) and an extremely low input bias current (1 pA vs. 15 nA), making it a better choice for processing high-frequency signals or interfacing with high-impedance sensors. The main trade-offs are its substantially higher quiescent current (6 mA vs. ~1.64 mA) and weaker output drive capability (12 mA vs. 40 mA). The former will significantly reduce battery life in power-sensitive applications, while the latter limits its ability to drive heavy loads, such as those with low impedance or high capacitance. Substitution feasibility is highly application-dependent. Replacement is viable if the application prioritizes high speed and low input current, with less stringent requirements for power consumption and strong drive capability. Otherwise, it is not recommended.