1. AT30TS74-SS8M-B Substitution Conclusion From the perspective of core functionality and package compatibility, the AT30TS74-SS8M-B can serve as a replacement for the STTS75M2F, with two key differences to note. First, the AT30TS74 supports a wider supply voltage range (1.7V–5.5V) compared to the STTS75’s 2.7V–5.5V, offering better compatibility, particularly in low-voltage systems. Second, the AT30TS74 lacks a standby mode. If the original design relies on this feature for low-power management, the substitution may impact the power control strategy. Beyond these differences, the two devices are fully aligned in accuracy (±2°C), resolution (11-bit), interface (I2C/SMBus), and package (8-SOIC). Both also include advanced features such as programmable temperature limits and configurable resolution. Therefore, in applications that do not depend on standby mode, the AT30TS74 can be used as a direct replacement and may even enable expanded use in low-voltage scenarios.