MN1381SN

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The MN1381SN is a 3V/5V supervisor device that integrates several functional blocks for supervisor applications, such as over-voltage protection, power-on reset, brown-out reset, low voltage reset and watchdog timer functions. The device utilizes a logic-level reset signal to ensure proper system reset activities.

The device provides fast and reliable detection of power up fluctuations, brown-out, and power-on reset events. Its watchdog timer uses a proprietary low-ripple oscillator that monitors system operation and guards against critical functions being stuck in an infinite loop. The device is available in 8-pin LLP and 8-pin SOIC packages.

The operating voltage of this device is between 2.5V and 6V, and the output signal is 0.2V TTL compliant, which is compatible with most microcontroller. The MN1381SN also features an internal MOSFET transistor to provide over-voltage protection, with a switch threshold voltage of 5.9V..

It has two types of reset mode: brown-out reset (BOR) and power-on reset (POR). When the input voltage drops to a certain threshold voltage, the BOR signal is activated, resetting the whole circuit. After the input voltage recovers, the POR signal is generated, which functions as an initial power-up reset signal.

Also, the watchdog timer of this device is designed to detect system hangs and to then force the reset sequence to reinitialize the system. With a wide range of time-out periods from 8ms to 8s, the MN1381SN is ideal for systems that may experience occasional periods of system overload.

The MN1381SN is suitable for many applications such as in battery-backed systems, industrial controllers, embedded systems, and Internet of Things. It is suitable to operate over a wide range temperature, ranging from -40°C to +125° C.

In summary, the MN1381SN is a low voltage, 3V/5V integrated supervisor device with comprehensive protection functions and wide operating temperature range. it is capable of providing reliable power-on reset, brown-out reset, and watchdog timer signals to ensure proper system reset activities.

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