1. AS358MTR-E1 Substitution Conclusion Direct substitution is not recommended. The critical differences lie in the supply voltage range and dynamic performance: the maximum operating voltage of the AS358MTR-E1 (36V) is significantly lower than the TJM4558CDT's rated voltage (44V). If the original circuit operates near 44V, direct replacement will cause overvoltage damage to the AS358MTR-E1. Furthermore, the AS358MTR-E1 does not specify slew rate (SR) or gain-bandwidth product (GBW), whereas the original part is rated at 2.2V/µs and 5.5MHz, respectively. This indicates that the AS358MTR-E1 likely lacks sufficient response capability for high-frequency or fast-changing signals, potentially leading to signal distortion or system instability. Although it offers advantages such as lower power consumption (1.4mA total current) and stronger output drive capability (40mA), the fundamental incompatibility in voltage rating and insufficient dynamic performance make it unsuitable for reliable operation under the original design conditions.