LEAP#219 DS18S20 1-Wire Reading
It comes in TO-92 packaging and may be powered directly (using three pins), or take parasitic power from the data line (using two pins). This makes it ideal for pin-starved microcontrollers that need a decent ambient temperature reading. In this project, I'm just exercising the sensor with a simple Arduino sketch.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub.