ZHCSC46C February 2014 – June 2021 INA300
The device is set to transparent mode when the LATCH terminal is pulled low, thus allowing the output alert state to change and follow the input signal with respect to the programmed alert threshold. For example, when the differential input signal rises above the alert threshold, the alert output terminal is pulled low. When the differential input signal drops below the alert threshold for 10 µs, the output returns to the default high output state. A common implementation using the device in transparent mode is to connect the ALERT terminal to a hardware interrupt input on a controller. As soon as an overcurrent condition is detected in the device and the ALERT terminal is pulled low, the controller interrupt terminal detects the output state change and can begin making changes to the system operation needed to address the overcurrent condition.