MAX6865UK44D4S+T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active High
Reset Timeout:	1.2 s Minimum
Voltage - Threshold:	4.375V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5
Base Part Number:	MAX6865

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MAX6865UK44D4S+T Application Field and Working Principle

The MAX6865UK44D4S+T is a high-accuracy microprocessor supervisor and reset IC from Maxim Integrated. It is suitable for use in a variety of electronic applications, including computers, digital equipment, and other microprocessor-based systems. It is designed to provide precise time delays for reset, monitoring, and other related functions.The MAX6865UK44D4S+T is a voltage supervisor with an adjustable reset threshold and an adjustable watch-dog timer. It has three independent reset outputs, an adjustable reset threshold, and an optional hot-swappable input. The reset threshold can be set between 33mV and 5V. The watch-dog timer can be programmed to provide a reset pulse after a specified time interval. The reset pulse is adjustable between 0.1ms and 25.6ms.The MAX6865UK44D4S+T is designed to protect microprocessors and their associated circuits from power failure, abnormal power supply conditions, and malfunctioning of the circuits themselves. The supervisor monitors the power supply voltage with an adjustable reset threshold and the watch-dog timer. When the power supply voltage drops below the reset threshold, the supervisor releases a reset pulse, which resets the microprocessors and their associated circuits. If the voltage returns to an acceptable level, the supervisor will stop the reset pulse.When the watch-dog timer expires, the supervisor will also release a reset pulse. The watch-dog timer is used to reset the microprocessor if the microprocessor fails to respond in a given time period. This can happen if the microprocessor becomes locked in a loop or if it runs the same set of instructions for too long. The watch-dog timer can be programmed to provide a reset pulse after any interval from 0.1ms to 25.6ms.In addition to reset and monitoring functions, the MAX6865UK44D4S+T also provides an optional hot-swappable input. This feature allows the supervisor to be powered down while being replaced and then automatically start functioning when the new supervisor is connected. This means that the new supervisor can be installed without having to power down the system.The MAX6865UK44D4S+T is suitable for battery-powered systems, cellular phones, portable medical systems, and other microprocessor-based applications where precise time delays and reset functions are required. It is available in space-saving 8-pin TSSOP packages, making it a good choice for applications where board space is limited.Overall, the MAX6865UK44D4S+T is an ideal device for supervisory applications where precise time delays and reset functions are required. Its adjustable reset threshold and watch-dog timer make it an ideal choice for protecting microprocessors and their associated circuits. The optional hot-swappable input allows for easy replacement of the supervisor, as well as eliminating the need to power down the system.

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