TCN75-5.0MOA

The TCN75-5.0MOA is a Serially Programmable Temperature Sensor that notifies the host controller when ambient temperature exceeds user programmed set point. The INT/CMPTR output is programmable as either a simple comparator for thermostat operation or as a temperature event interrupt. Communication with the TCN75 is accomplished via a two-wire bus that is compatible with industry standard protocols. This permits reading the current temperature, programming the set point and hysteresis and configuring the device. The TCN75 powers up in Comparator mode with a default set point of 80°C with 5°C hysteresis. Defaults allow independent operation as a stand-alone thermostat. A shutdown command may be sent via the 2-wire bus to activate the low-power Standby mode. Address selection inputs allow up to eight TCN75s to share the same 2-wire bus for multizone monitoring. All registers can be read by the host and the INT/CMPTR output's polarity is user programmable.

• Solid state temperature sensing 0.5°C Accuracy (typical)
• Programmable trip point and hysteresis with power-up defaults
• Standard 2-wire serial interface
• Up to 8 TCN75s may share the same bus
• Shutdown mode for low standby power consumption
• 5V Tolerant I/O at VDD = 3V
• 250μA (typical) Operating low power
• 1μA (Typical) Shutdown mode low power