MAX942MSA/PR-T

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The MAX942MSA/PR-T integrated circuit is an open-drain, bipolar voltage threshold Comparator. This IC is part of the Linear-Comparator family and provides an interesting array of features. It operates from a single power supply and multiple voltage ranges, providing accurate supply voltage monitoring and overload protection for analog and digital systems.

The IC requires a minimal of external components for operation, which makes it ideal for space-constrained and cost-sensitive applications. It is available in an 8-pin small outline package that consumes very little board space.

The MAX942MSA/PR-T features two independent open-drain Comparators with voltage thresholds that are biased between VDD and COM. The supply voltage range operates between 3V to 16V, with a threshold voltage of 2.7V, but can be adjusted via the VTH pin to a maximum value of 10.5V. It also includes a polarity toggle switch with hysteresis, enable and reset functions, and a power-on reset.

The primary application field for the MAX942MSA/PR-T is providing supply voltage and overload protection for analog and digital systems. It is ideal for distributed workstations and DC-DC converters where it monitors input and output voltages, and triggers alarms if either voltage is outside a specified voltage range. Furthermore, its overvoltage protection feature protects circuits and components from spikes or overloads.

The working principle of the MAX942MSA/PR-T can be explained as follows. When the voltage between the VTH and COM pins is less than the pre-determined threshold voltage, a low logic state is produced (open-drain) and the Comparator output will be active. When the voltage between the VTH and COM pins is greater than the threshold, the low logic state will disappear, and the Comparator output will be inactive.

The MAX942MSA/PR-T is a useful and reliable integrated circuit with a variety of features that make it suitable for a wide array of applications. Its feature set, relative low price and small board space requirements give it a competitive edge over other comparators in the Linear-Comparator family.

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