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MAX6344：6-Pin µP Reset Circuit with Power-Fail Comparator

The MAX6342-MAX6345 family of microprocessor (µP) supervisory circuits monitors power supplies in digital systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX6342-MAX6345 provide factory-trimmed VCC reset threshold voltages from 2.33V to 4.63V and operate with supply voltages between +1V and +5.5V. A +1.25V threshold detector allows for a power-fail warning, for low-battery detection, or for monitoring another power supply. The MAX6342 contains an active-low MR input and an active-low push-pull reset. The MAX6343 and MAX6344 are identical to the MAX6342 except they provide an active-low, open-drain reset and an active-high, push-pull reset, respectively. The MAX6345 provides a second reset output in place of the active-low MR input to give it an active-high push-pull reset and an active-low push-pull reset. All of the devices are packaged in a miniature 6-pin SOT23.

Key Features Small 6-Pin SOT23 Package Precision Factory-Set VCC Reset Thresholds Between 2.33V and 4.63V Guaranteed Active-Low RESET Valid to VCC = +1V 100ms min Reset Pulse Width Debounced CMOS-Compatible Manual-Reset Input Voltage Monitor for Power-Fail or Low-Battery Warning

MAX6342, MAX6343, MAX6344, MAX6345: Typical Operating Circuit Applications/Uses Embedded Control Systems Multivoltage Systems Network Equipment Portable Battery-Powered Equipment Portable Computing Telecom Equipment

DataSheet

Parametrics

Quality and Environmental Data

• MAX6344.pdf

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