MAX6889ETJ+

The MAX6889ETJ+ is a Ultra-Low Voltage Supervisor from Maxim Integrated. It can easily detect even single short or open pins for positive or negative voltages and can supervise multiple voltage rails with the same output. This makes it ideal for batteries, AC adapters, and other power supply applications.

The MAX6889ETJ+ is used as a protection solution for devices such as smart phones, tablets, industrial metering/monitoring systems, and automotive electronics. It monitors power supply rails and ensures predictable system behavior by providing flexible monitoring and reset options. This enhances system reliability and eliminates the need for manual reset in critical applications.

The MAX6889ETJ+ is an analog voltage supervisory circuit that looks out for negative or positive voltages ranging from 0.5V to 7V, with a typical operating voltage of 0.4V. It is designed for applications where accuracy and low cost are key requirements. The device also has an independent supply input for the POR output, making it suitable for low-power applications.

The MAX6889ETJ+ is designed to monitor two independent power lines at once or one line for positive and one for negative voltages respectively. When the monitored voltage exceeds the specified threshold, the MAX6889ETJ+ triggers a reset to ensure predictable system behavior. The device also features a power-on reset (POR) delay of up to 1s, and an active-low active-high reset (RST) output. These features make it suitable for power-up sequencing, ensuring hardware and firmware misconfigurations do not cause system crashes.

The MAX6889ETJ+ also features a push-pull output which is of low power consumption and can be used as an interrupt signal to host controller when a monitored voltage is out of tolerance. In addition, the device also has an adjustable reset timeout, which can be set to a value between 40ms and 260ms, depending on the application. The tilt and hysteresis of the device can also be adjusted via external resistors.

The small form factor and low power consumption of the MAX6889ETJ+ makes it ideal for various portable and embedded applications, where high reliability and superior system performance are essential. Its accurate monitoring of voltages and hysteresis controls ensures timely system response, helping to reduce system errors.

In conclusion, the MAX6889ETJ+ is an excellent supervisor for portable and embedded applications. It monitors two independent power supply rails and is suitable for low voltage and low power applications. Its features include a Reset button, adjustable reset delay and output active polarity, making it ideal for power-up sequencing, reset control, and timing control.