onsemi Temperature Monitor, Digital Output, Surface Mount, Serial-2 Wire, ±2.5°C, 24 Pins

The ADT7475/7476 series of temperature monitors are designed to measure and monitor the temperature of up to 2 remote sensor diodes, measure their ambient temperature, monitor the fan control speed of up to 4 fans and drive a fan. The monitors are ideal for designs that require economical and minimal noise system cooling.

Features;

-High and low frequency fan drive signal
-Automatic fan speed control loop
-Enhanced acoustic mode
-Thermal Protection
-Thermal control circuit
-3 and 4 wire fan speed measurement
-SMBus compliant

Temperature Control Interfaces, ON Semiconductor

A range of temperature sensing and monitoring devices from ON Semiconductor.