1. TS462CST Substitution Conclusion The TS462CST can serve as a conditional substitute in applications where high-speed transient response is not critical, the signal source impedance is low, and system power consumption constraints are relaxed. The key differences are as follows: The slew rate of the TS462CST (4 V/µs) is only 40% of the original part (10 V/µs), resulting in slower response when handling fast-changing signals, which may affect the accuracy of high-frequency, large-signal waveforms. Its input bias current (200 nA) is significantly higher than the OPA2743's 1 pA, introducing notable error in high-impedance source applications. The quiescent current (2 mA per channel) is approximately 1.8 times that of the original part, leading to increased power consumption. While the gain bandwidth product (12 MHz) is higher, which benefits bandwidth under high-gain configurations, the upper supply voltage limit (10 V) is slightly lower than the original part’s 12 V, restricting its suitability in higher-voltage supply scenarios. Substitution is feasible if the application is insensitive to input bias current and slew rate, and the supply voltage does not exceed 10 V.