MAX810LEXR+

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The MAX810LEXR+ is a supervisor from Maxim Integrated, designed to help guarantee a timely wake-up and reset of microcontrollers and digital signal processors. It is suitable for applications such as automotive, industrial, and computing that require additional guaranteed monitoring. The MAX810LEXR+ provides the necessary features to safeguard reliability of systems where there might be transient voltage errors or wide output voltage range boundaries. This comprehensive supervisor can detect a variety of system conditions such as power-on and power-off reset; undervoltage; brownout/bandgap reset; watchdog timer/timed reset; and 25ms, 110ms, and 250msreset Delay options.

The MAX810LEXR+ includes two separate power pins that allow a system to wake up and reset with two separate voltage sources. It operates from - 40°C to +125°C, and this wide temperature range is useful when designing detect-and-reset systems such as automotive where the system temperatures can range into extremes. It is also available in a small four-pin SOT-23 package, which allows for simple monitoring and reset functions in very tight spaces. Its low current requirements can help minimize power consumption when compared to larger pin-count devices.

The MAX810LEXR+ provides its users with extensive protection for their systems. It has an integrated power-on-reset circuit with a power-on-reset delay timer. This allows the on-chip bandgap reference to stabilize before an active-low reset is enabled. Also included is a 2.7V undervoltage monitor with a selectable hysteresis of either 30mV or 50mV. This monitor will detect power supply droops, detect glitches, and hold RESET active whenever the power supply voltage is at or below the set threshold. In addition to this, the device features a watchdog timer with a maximum timeout period of approximately 10.2 seconds. Finally, a window watchdog is available to ensure system processes are running within a certain range.

The MAX810LEXR+ offers a wide variety of application functionalities through its combination of power-on reset, undervoltage monitor, watchdog timer, and wind monitor. These features help protect systems from external sources such as power supply droops, reset overselection, and timer window failures. This protector can also be powered directly from the microcontroller, thus allowing the microcontroller to always remain in the highest-possible operational state. This helps make sure that an important application does not suffer outages due to an incorrect reset signal.

Overall, the MAX810LEXR+ is a versatile, low-power supervisor device that helps ensure system reliability in a variety of applications. It is ideal for use in automotive and industrial applications requiring supervision of power levels, or those with a wide output voltage range or transient voltage errors. Its features supply the necessary protection while the small package size and low-power operation can minimize power consumption. Applications such as embedded systems, computing systems, or any other design where reliability is key, should consider the Maxim Integrated MAX810LEXR+.

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