2. BU7242SFVM-TR Substitution Conclusion The substitution is viable with closely matched parameters, but it incurs significantly higher power consumption, making it suitable for low-voltage systems where power is not a critical constraint. The differences are outlined below: First, its quiescent current is notably high at 180µA (total for both channels), which is double the 45µA per channel of the original part. This directly impacts battery life in portable devices. Second, its gain-bandwidth product (900 kHz) and slew rate (0.4V/µs) are slightly lower than those of the original part, resulting in marginally inferior performance in applications demanding stringent frequency response or fast signal settling. Third, its primary advantage is a lower minimum operating voltage of 1.8V, superior to the original part, offering better adaptability in deep low-voltage applications. Both devices utilize CMOS technology, providing good matching in characteristics such as input bias current (1 pA) and supply voltage range (1.8V to 5.5V).