MAX709MESA+

Series:	--
Packaging:	Tube
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	4.4V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	MAX709

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Introduction
The MAX709MESA+ is a miniature, multi-purpose supervisor solution from Maxim Integrated Products, a leading global leader in the design and manufacture of integrated circuits. This product was designed especially for use in automotive and standard industrial applications, as well as a variety of embedded systems. It solves the need for a single, space-saving, cost-effective solution for providing system protection, monitoring and diagnosis for important power and data lines. The MAX709MESA+ features an internal voltage detector (IVD), and a large range of programmable functions.Key Features
The MAX709MESA+ offers a number of features designed to provide system protection and monitoring, including:

• Accurate system monitoring through precision IVD with ±1.2mV accuracy
• Integrated temperature detector for increased safety and reliability
• Flexible reset output timer latches
• Independent reset, power-up/down, and watchdog timers
• Reset asserted or non-asserted reset polarity option
• Programmable power supply range support
• Detailed device status information can be read back

Application Fields
The MAX709MESA+ is an ideal solution for implementing system protection, monitoring and diagnosis in automotive and standard industrial applications. Its accuracy, flexibility and wide power range support make it well-suited for applications requiring efficient system protection. It is suitable for automotive power systems, security and safety systems, lighting systems, along with many other applications.Working Principle
The MAX709MESA+ monitors power supply voltage with its internal voltage detector (IVD). The IVD can detect a drop in voltage without the need for an external reference device. When the input voltage falls below a pre-determined threshold, the IVD sends a reset signal to the system to indicate the drop of voltage. The MAX709MESA+ also includes a reset output timer that can be programmed to allow the system to remain reset for as long as needed.The MAX709MESA+ also features a temperature detector to detect if the monitored voltage is changing too quickly due to extreme ambient temperature. When the temperature detector triggers, the MAX709MESA+ will send a reset signal to the system and force it to stay reset for a pre-determined period of time. This allows the system to stay stable until it is safe to resume normal operation.The MAX709MESA+ also includes independent reset, power-up/down and watchdog timers. The reset timer provides a reset period of up to 512ms while the power-up/down timer allows the system to be left in reset as long as needed. The watchdog timer monitors the system and restarts it when needed.Conclusion
The MAX709MESA+ is a powerful, miniature supervisor solution designed for a wide range of automotive and industrial applications. It provides precise system monitoring with its internal voltage detector and temperature detector, as well as flexible reset and power-up/down timers. This makes the MAX709MESA+ an ideal solution for providing efficient system protection and reliable performance in demanding applications.

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