The MAX6514/MAX6515 low-cost, fully integrated temperature switches assert a logic signal when their die temperature crosses a factory-programmed threshold. Operating from a 2.7V to 5.5V supply, these devices feature a fixed voltage reference, an analog temperature sensor, and a comparator. They are available with factory-trimmed temperature trip thresholds from -45C to +15C and +35C to +115C in 10C increments, and are accurate to 1C (typ). These devices require no external components and typically consume 22A of supply current. Hysteresis is pin selectable at 2C or 10C. The MAX6514/MAX6515 are offered with hot-temperature thresholds (+35C to +115C), asserting when the temperature is above the threshold or with cold-temperature thresholds (-45C to +15C), asserting when the temperature is below the threshold. The MAX6514/ MAX6515 can be used over a -35C to +125C range with a supply voltage of 2.7V to 5.5V. For applications sensing temperature down to -45C, a supply voltage above 4.5V is required.