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Product Attributes

Overview

The MAX6803/MAX6804/MAX6805 microprocessor (µP) supervisory circuits monitor the power supplies in 2.85V to 5.0V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external components and adjustments. They also feature a debounced manual-reset input.

These devices perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold or whenever manual reset is asserted. Reset remains asserted for a preset timeout period after VCC has risen above the reset threshold or after manual reset is deasserted. The only difference among the three devices is their output. The MAX6804 (push/pull) and MAX6805 (open-drain) have an activelow RESET output, while the MAX6803 (push/pull) has an active-high RESET output. The MAX6803/MAX6804 are guaranteed to be in the correct state for VCC down to 0.7V. The MAX6805 is guaranteed to be in the correct state for VCC down to 1.0V.

The reset comparator in these ICs is designed to ignore fast transients on VCC. Reset thresholds are factorytrimmable between 2.63V and 4.80V, in approximately 100mV increments. These devices are available with a 1ms min, 20ms min, or 100ms min reset timeout period. Ideal for space-critical applications, the MAX6803/ MAX6804/MAX6805 come packaged in a 4-pin SOT143. For a lower threshold voltage version, see the MAX6335/ MAX6336/MAX6337

Features

● Ultra-Low 0.7V Operating Supply Voltage

● Low 4.0µA Supply Current

● Precision Monitoring of 2.85V to 5.0V Power-Supply Voltages

● Reset Thresholds Available from 2.63V to 4.80V, in Approximately 100mV Increments

● Debounced Manual-Reset Input

● Fully Specified over Temperature

● Three Power-On Reset Timeout Periods Available (1ms min, 20ms min, 100ms min)

● Low Cost

● Three Available Output Structures: Push/Pull RESET, Push/Pull RESET, Open-Drain RESET

● Guaranteed RESET/RESET Valid to VCC = 0.7V (MAX6803/MAX6804)

● Power-Supply Transient Immunity

● No External Components Required

● 4-Pin SOT143 Package

● Pin Compatible with MAX811/MAX812 and MAX6314/MAX6315

Advantages and Disadvantages

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Applications

● Computers

● Controllers

● Intelligent Instruments

● Critical µP/µC Power Monitoring

● Portable/Battery-Powered Equipment

Compliance

ECCN / UNSPSC

Documents & Media

Product Manufacturer

Maxim Integrated is an American, publicly traded company that designs, manufactures, and sells analog and mixed-signal integrated circuits.Maxim Integrated develops integrated circuits (ICs) for the automotive, industrial, communications, consumer, and computing markets. The company is headquartered in San Jose, California, and has design centers, manufacturing facilities, and sales offices throughout the world. In the fiscal year 2018, it had US$2.48 billion in sales, 7150 employees, and 35,000 customers worldwide. Maxim is a Fortune 1000 company and its stock is a component of the NASDAQ-100 stock market index.Maxim's product portfolio now includes power and battery management ICs, sensors, analog ICs, interface ICs, communications solutions, digital ICs, embedded security, and microcontrollers. In these product segments, the company has made some notable achievements.Analog ICs are a core product area for Maxim. These high-performance building blocks provide a variety of features and capabilities, from ultra-low power consumption to extended battery life, precision signal conversion, and rugged connectivity. A highlight in 2018 for this versatile product line was the electronica 2018 trade show, where attendees saw demos including a nanoPower watch, force-touch technology, CAN ESD protection, and an ISM RF transmitter-based home automation system.

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