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    Dual-Voltage uP Supervisory Circuits with Sequenced Reset Outputs

    DUAL-VOLTAGE RESET CIRCUITS WITH SE - Cut Tape Product

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    General Description

    The MAX6391/MAX6392 microprocessor (?P) supervisory circuits provide sequenced logic reset outputs for multi component or dual-voltage systems. Each device can monitor two supply voltages and time-sequence two reset outputs to control the order in which system components are turned on and off. The MAX6391/MAX6392 increase system reliability and reduce circuit complexity and cost compared to separate ICs or discrete components.

    Features

    ? Preset VCC Reset Threshold Voltages from 1.58V to 4.63V (master supply)

    ? Customer-Adjustable RESET IN2 to Monitor Voltages Down to 625mV (secondary supply)

    ? Fixed (140ms min) RESET1 Timeout

    ? Fixed (140ms min) or Customer-Adjustable RESET2 Timeout Period

    ? Guaranteed Reset Valid to VCC = 1V

    ? Active-Low Open-Drain Outputs or Push Pull/Open-Drain Combination

    ? Internal Open-Drain Pullup Resistors (for external VOH voltage connections)

    ? Manual Reset Input (MAX6392 only)

    ? Immune to Short Negative VCC Transients

    ? 15?A Typical Supply Current

    ? Few External Components

    ? Small 8-Pin SOT23 Package

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