Maxim MAX14836 Dual-Output Sensor Transceiver

The MAX14836 24V Dual-Output Sensor Transceiver is a sensor driver capable of driving two sensors from dual 24 V outputs. The device features two outputs, each of which is configurable for push-pull, high-side or low-side outputs. The sensor transceiver targets industrial applications requiring sensor monitoring.

The product allows two sensors to communicate with a target microcontroller. Communication is through an SPI interface which allows configuration and monitoring of the device and its target sensors. The DIO driver can handle a 3 µF load, while the DO driver can handle a 2 µF load. Electromagnetic interference can be controlled by programmable slew control.

The unit includes two linear regulators that generate 5 and 3.3 V. The 5 V regulator can drive up to 30 mA external load current, while the 3.3 V regulator can drive up to 20 mA. If the 5 V regulator is not used, it can be used to supply current for the internal analog and digital functions. The output drivers are automatically disabled if either the regulator or the chip supply voltage falls below its preset thresholds.

The device features extensive on-chip fault detection including detecting DIO driver short circuits longer than 650 µs, DO driver short circuits longer than 440 µs, reverse polarity protection, undervoltage detection and thermal protection, including overtemperature warning and thermal shutdown.