1. AT30TSE752A-SS8M-T Substitution Conclusion From a core functionality and package perspective, the AT30TSE752A-SS8M-T is a direct drop-in replacement, as it is also a local digital temperature sensor with an I2C interface in an 8-SOIC package. The differences and their impacts are as follows: First, the accuracy specifications differ. Within the 0°C to 85°C range, this part has a nominal accuracy of ±1°C, which is superior to the TMP175AIDR's ±1.5°C. However, across the wider -40°C to 125°C range, its accuracy is ±3°C, which is inferior to the latter's ±2°C. This could lead to increased system temperature measurement error under extreme high or low-temperature operating conditions. Second, it offers advantages in resolution and supply voltage range. Its 11-bit resolution is higher than the 9-bit resolution, and the minimum operating voltage is reduced to 1.7V, offering improvements in digital readout granularity and low-voltage system compatibility. Substitution is viable if the application's temperature range is primarily within 0°C to 85°C and there are higher demands for accuracy and low power consumption. If the operating temperature frequently approaches -40°C or 125°C, the impact of the accuracy degradation must be carefully evaluated.