2. TS512AIDT Substitution Conclusion Similarly, the TS512AIDT cannot directly replace the LT1213CS8. While its performance exceeds that of the LM358DT, it remains markedly inferior to the original part and fails to meet the performance expectations of the original design. The TS512AIDT's gain-bandwidth product (3 MHz) and slew rate (1.5 V/µs) are nearly ten times lower than the LT1213's. This limits its application to frequencies above the mid-audio range or to medium-speed analog signal processing, causing significant high-frequency roll-off and inadequate dynamic performance. Its input offset voltage (500 µV) is over three times that of the LT1213, degrading system DC accuracy and signal conditioning fidelity. Although it carries automotive-grade qualification, the downgrade in core performance metrics means it can only be considered as an alternative in systems where performance requirements are substantially relaxed, not as a direct, equivalent replacement.