MAX643AC/D-C71043

Product Overview

• Category: Integrated Circuit
• Use: Voltage Monitor with Programmable Delay
• Characteristics: Low power consumption, adjustable delay time, wide voltage range
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Monitors system power supply and provides a reset signal if the supply voltage drops below a preset level
• Packaging/Quantity: Tape & Reel (3000 units)

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage Options: 4.63V, 4.38V, 4.00V, 3.08V, 2.93V, 2.63V, 2.32V, 2.32V
• Adjustable Reset Timeout Period: 1.6ms to 640ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. GND (Ground)
2. MR (Manual Reset)
3. VCC (Supply Voltage)
4. RESET (Output)
5. CT (Delay Time Capacitor)
6. TH (Threshold Voltage)
7. TRIG (Trigger Input)
8. RESET (Output)

Functional Features

• Monitors supply voltage and asserts a reset signal when the voltage falls below the programmed threshold
• Adjustable reset timeout period for flexibility in different applications
• Manual reset input for external system control
• Low power consumption for energy-efficient operation

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows for versatile use in various systems
• Adjustable reset threshold and timeout period provide customization for specific requirements
• Small package size and low power consumption make it suitable for portable and battery-powered devices

Disadvantages

• Limited to monitoring single power supply voltage
• Requires an external capacitor for setting the delay time

Working Principles

The MAX643AC/D-C71043 operates by comparing the supply voltage with the programmed threshold voltage. When the supply voltage falls below the threshold, the device triggers a reset signal after the programmed delay time. The manual reset input allows for immediate system reset when necessary.

Detailed Application Field Plans

This voltage monitor IC is commonly used in embedded systems, microcontroller-based applications, and portable electronic devices where maintaining stable power supply operation is critical. It ensures proper system initialization and prevents erratic behavior due to voltage fluctuations.

Detailed and Complete Alternative Models

• MAX642AESA+: Similar functionality with a different package (SOIC-8)
• MAX6442ESA+: Offers dual voltage monitoring with adjustable reset timeout

Note: The information provided is based on the available data at the time of writing and may be subject to updates or revisions.

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