.The MAX809TEUR+T is a supervisor integrated circuit manufactured by Analog Devices, featuring a Power On Reset Monitor (PoR). It is a low power, precision, microprocessor-compatible reset circuit which provides authorized and stable system power-on reset operations. The device uses a capacitor-programmable reset threshold to detect an out-of-range voltage and initiates a reset action when the input voltage falls below its set threshold value. It also offers an external reset input, system power monitoring, and adjustable reset timeout with watchdog timer. The device also features a low current consumption and wide operating parameters. Its wide -40 to +85°C temperature range and wide supply voltage range of 1.8 to 5.5V make it suitable for various applications.