The LM75B and TMP1075 are now industry-standard benchmarks in digital temperature sensors with an I2C® interface. Originating from the LM75, first introduced by National Semiconductor in the 1990s, these devices are now key components of TI’s digital temperature sensor portfolio. Their long-lived popularity lies in their flexibility, widespread availability, and cost efficiency.
Before integrating these sensors into your design, it is crucial to understand their nuances and the subtle yet important differences. This is particularly vital in designs requiring compatible pin-to-pin alternate parts. The information in this application note is aimed to help you make informed choices, simplifying the selection process and promoting first-time success in your LM75-based designs.
Including LM75A, TMP75, TMP75-Q1, TMP75B, TMP75B-Q1, TMP75C, TMP75C-Q1, TMP175, TMP175-Q1, TMP275, TMP275-Q1, TMP102, TMP102-Q1, TMP112, TMP112-Q1, TMP110.
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Texas Instruments provides a range of different digital temperature sensors compatible with two-wire, SMBus, and I2C interfaces. These temperature sensors are included under the TI 75 family of sensors. This application note guides customers in selecting the appropriate sensor within the 75-family series of TI Temperature sensors and helps them optimize newer features offered in devices such as TMP1075, TMP110, and TMP112-Q1.
This document provides simplified comparison tables for customers to consider the main differences when replacing components. These specs were carefully chosen to provide the best side-by-side comparison. This document provides a high overview comparison but does not reveal all specs. Further investigation of the data sheets is necessary before making a switch to one of these devices.
To provide additional clarity in hardware and software variations, this article discusses Linux driver compatibility, conversion time, resolution compatibility, and data encoding compatibility.