1. AS324MTR-G1 Substitution Conclusion The AS324MTR-G1 can replace the TL074ID in terms of pinout and basic functionality, but significant differences in core performance mean substitution feasibility is highly application-dependent. The key distinctions are as follows: First, input architecture and bias current. The TL074ID employs J‑FET inputs with an extremely low input bias current (65 pA), approximately 300 times lower than the bipolar input bias current of the AS324MTR‑G1 (20 nA). In precision applications requiring high input impedance and low input current—such as photodetection, high‑impedance sensor interfaces, or integrator circuits—the AS324MTR‑G1 would introduce greater error and may not be suitable. Second, bandwidth and speed. The TL074ID specifies a relatively high gain‑bandwidth product (5.25 MHz) and slew rate (13 V/µs), whereas the AS324MTR‑G1, as a general‑purpose op‑amp, does not specify these parameters. Typically, its bandwidth and speed are far lower than those of J‑FET types, making it incapable of handling high‑frequency signal processing, active filtering, or fast integration tasks where the TL074ID excels. Third, supply‑voltage lower limit. The AS324MTR‑G1 supports lower single/dual‑supply voltages (down to 3 V), giving it an advantage in low‑voltage single‑supply systems, while the TL074ID requires a minimum of ±5 V or a single supply of 10 V. In summary, if the application involves only general‑purpose amplification, comparator, or voltage‑follower functions at mid‑to‑low frequencies with non‑high‑impedance signals, and the supply voltage is compatible, the AS324MTR‑G1 can serve as a lower‑cost substitute. However, for high‑precision, high‑impedance, or high‑speed signal‑processing applications, direct substitution is not recommended.