SBOS740A May 2017 – May 2019 TMP116
The TMP116 operates only as a slave device and communicates with the host through the I2C-compatible serial interface. SCL is the input pin, SDA is a bidirectional pin, and ALERT is the output. The TMP116 requires a pullup resistor on the SCL, SDA, and ALERT pins. The recommended value for the pullup resistors is 5 kΩ. In some applications the pullup resistor can be lower or higher than 5 kΩ. A 0.1-µF bypass capacitor is recommended to be connected between V+ and GND. An SCL pullup resistor is required if the system microprocessor SCL pin is open-drain. Use a ceramic capacitor type with according temperature range, placed as close as possible to the V+ pin of the TMP116. The ALERT output pin can be connected to a microcontroller interrupt that triggers an event that occurred when the temperature limit exceeds the programmable value or indicates conversion end. It is recommended that the ALERT pin be connected to ground.