1. LM258DRG3 Substitution Conclusion From a strict parameter matching and performance perspective, the LM258DRG3 is not suitable as a direct replacement for the LT1464ACS8TRPBF. Although both devices are package-compatible (8-SOIC) and have partially overlapping supply voltage ranges, there are significant gaps in key performance specifications: The input bias current of the LM258 (20 nA) is approximately 40,000 times higher than that of the LT1464 (0.5 pA), making it unusable in applications highly sensitive to input current, such as high-impedance sensor signal acquisition. Its input offset voltage (3 mV) far exceeds that of the LT1464 (600 µV), severely degrading DC accuracy. Furthermore, its bandwidth (700 kHz) and slew rate (0.3 V/µs) are lower, resulting in weaker dynamic response. Additionally, the LM258's quiescent current (500 µA per channel) is significantly higher than that of the LT1464 (145 µA per channel). Substitution may only be considered in general-purpose, low-frequency circuits with low supply voltage requirements (e.g., 3V–10V) and no stringent demands for precision, noise, or power consumption, though a full system performance re-evaluation would be necessary.