±0.4°C Temperature Sensor with Daisy-Chain UART, EEPROM, and Alert Function


Product details


Local sensor accuracy (Max) (+/- C) 0.4 Type Local Operating temperature range (C) -55 to 125 Supply voltage (Min) (V) 1.7 Interface type UART Supply voltage (Max) (V) 5.5 Supply current (Max) (uA) 35 Temp resolution (Max) (bits) 14 Features EEPROM, Daisy chain, ALERT, One-shot conversion Remote channels (#) 0 Addresses 32 Rating Catalog open-in-new Find other Digital temperature sensors

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 open-in-new Find other Digital temperature sensors


  • High Accuracy (Without Calibration):
    • ±0.4°C (max) from –20°C to +70°C
    • ±0.55°C (max) from –40°C to +100°C
    • ±0.7°C (max) from –55°C to +125°C
  • High Resolution: 14 Bits (0.015625°C)
  • UART-Compatible, SMAART Wire™ Interface:
    • Allows Up To 32 Daisy-Chained Devices
  • EEPROM Memory for Unique Addressing, Trip Level Programming, and General-Purpose Storage
  • Continuous Conversion and Shutdown Mode for Power Savings
  • One-Shot Conversion Mode for Custom Update Rates and Power Savings
  • Programmable Alert Feature
  • Operating Temperature Range: –55°C to +125°C
  • Operating Supply Range: 1.7 V to 5.5 V
  • Package: SOIC-8

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The TMP107 digital output temperature sensor supports a total of 32 daisy-chained devices. Each sensor has a unique 5-bit address stored in electrically-erasable programmable memory (EEPROM). The TMP107 is capable of reading temperatures with a resolution of 0.015625°C, and is accurate to within ±0.4°C in the range from –20°C to +70°C. The TMP107 is ideal for replacing NTC and PTC thermistors where high accuracy is required.

The unique 5-bit address stored in the EEPROM is determined during the automated address assignment operation, and is based on the position of each sensor relative to the SMAART wire host. Multiple operating modes provide maximum flexibility in selecting between low power consumption for battery operation, and high update rates for real-time control applications.

The TMP107 is ideal for extended temperature measurement in a variety of industrial, instrumentation, communication, and environmental applications. The TMP107 is available in an 8-pin SOIC package and is specified for operation over a temperature range of −55°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet TMP107 Digital Temperature Sensor With Bidirectional UART One-Wire Interface and EEPROM datasheet (Rev. D) Jan. 13, 2020
Application note Interfacing TMP107 SMAART Wire™ Temperature Sensors Over CAN or RS-485 Physical Mar. 11, 2021
Application note Efficient Cold Chain Management With Scalable High-Accuracy Temperature Sensors (Rev. A) Dec. 11, 2020
Technical article How to choose the right thermistor for your temperature sensing application Feb. 13, 2020
Technical article How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical article Driving industrial innovation with small-size sensors Sep. 12, 2019
User guide BOOST-TMP107 User's Guide Jun. 22, 2017
Technical article How to select a temperature sensor probe Feb. 18, 2016
Application note Easy-to-use Cabling Interface for Measuring Temperature with the TMP107 (Rev. A) Oct. 21, 2015
User guide TMP107EVM User's Guide Aug. 26, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The BOOSTXL-TMP107 BoosterPack Module adds 3 high-accuracy temperature sensors to your LaunchPad development kit. These sensors feature a one-wire serial protocol which is suitable for long cabling with up to 32 sensors in series. The breakable sections of the PCB enable the user to place the (...)
  • Features TMP107 with Accuracy  ±0.4°C and 14-bit Resolution (0.015625°C)
  • Three Wire Digital: Only Power, Ground and Communication
  • Up to 32 Temperature Sensor Nodes
  • Code Examples written for portability
  • Compatible with Leoni Smart Cables featuring TMP107
document-generic User guide

This TMP107EVM includes a USB-to-SMAART Wire interface and four TMP107 devices to evaluate in a daisy-chain. The SMAART Wire interface is a bidirectional UART, so only three conductors are needed between devices, which the TMP107EVM provides.  The computer interface board has a solderless (...)


• Enables full software evaluation of TMP107

• Access to Scratch-Pad Memory

• Detachable, 3-Device Cable Assembly

• Hardware configurable 3.3V or 5V supply

• 0.6"x3" USB stick form factor

Software development

SBOC483.ZIP (631 KB)

Design tools & simulation

SLAM267.ZIP (100 KB) - IBIS Model

Reference designs

Accurate Temperature, Light Sensing, and Diagnostics Reference Design for Smart Grid Applications
TIDA-00811 — This reference design provides accurate measurements of ambient light intensity used to detect arc flash faults with a fast response of 1 ms, protecting or minimizing damages to power distribution switchgear. This design also monitors temperature (using switch, analog, digital or remote ), humidity (...)
document-generic Schematic document-generic User guide
Daisy chain temperature sensor reference design for SensorTag
TIDA-00800 The TIDA-00800 reference design entails 4 temperature sensors along a daisy chain in a cabling environment.  The sensors connect to the SensorTag development platform via the UART interface where the information can be transmitted wirelessly.  The Bluetooth low energy wireless technology (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

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