MAX6740XKLTD3+T

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The MAX6740XKLTD3+T parts are high-precision reset and voltage monitor integrated circuits. It is typically used in applications such as supervisory circuits, system reset, and processor reset. The MAX6740XKLTD production is specifically targeted at providing a comprehensive monitoring solution for industrial and automotive products demanding higher voltage accuracy and reliability. The device set is optimized for low power consumption and takes a single-wire cable for ease of connection. It also provides an external reset signal that can be used to reset other active components in the system.

The MAX6740XKLTD3+T is an extended temperature version of the MAX6740XKL3+T which operates up to 125°C. It is primarily used in automotive and industrial systems in order to achieve high levels of accuracy, reliability and system performance. The device includes overvoltage, undervoltage and open-drain reset output functions, plus digital control logic and 10-bit digital-to-analog converters supporting the following features:

• Precision voltage monitoring: voltage threshold accuracy of ±0.3% over the battery temperature range of -40°C to +125°C.
• Undervoltage and overvoltage: the parts have an integrated analog comparator, which provides open-drain reset output signals for overvoltage/undervoltage conditions.
• Temperature sensing: multiple programmable alarms, including temperature sensing and thermal shutdown for wider temperature range operations.
• Adjustable timer: operational time-out period is adjustable from 0.01 seconds to 4.095 minutes.
• Trigger input: trigger input signal can be either active high or active low.
• Input protection: the parts include overvoltage and a current-limiting feature that protects the input from ESD and external shock.
• Reset output: open-drain RESET output with high-speed transition times supports microprocessors with its reset function.

The general working principle of the MAX6740XKLTD3+T is as follows – when the voltage on the voltage monitor pins falls below a preprogrammed threshold or the preprogrammed timer expires, the MAX6740XKLTD3+T set an internal latch and activates an open-drain reset signal. This reset signal is an active low, and is used to inform other components in the system that reset is required. In addition, the parts have a programmable timer that can be used for a delayed reset action to assess the system stability after a voltage out of range event.

The MAX6740XKLTD3+T parts incorporates a sophisticated industry-recognized 12-bit digital-to-analog converter and a high-speed analog comparator in a single device for voltage monitoring and automatic resetting of microprocessors, DSPs and other digital ICs. The voltage monitor’s open-drain output signal can be connected to a microprocessor’s reset input, and the voltage monitor’s output signal is triggered as soon as a user-programmable threshold is exceeded. This enables tighter control of the microprocessor or other digital ICs, as the device precisely controls the reset point of the microprocessor or other digital ICs. The device includes programmable digital alarms which can be used to alert the system that the voltage has gone out of the acceptable range.

The MAX6740XKLTD3+T is develop to simplify the implementation of high accuracy, reliability, and performance monitoring in applications such as automotive, consumer, industrial and network equipment. This device enables users to take advantage of 12-bit resolution and extended temperature range for maximum power efficiency, reliability, and feature-rich configuration. The MAX6740XKLTD3+T provides an integrated, single-chip solution for successful system power management.

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