MAX691AEWE/GG8

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the power supply voltage of a system
  • Generates a reset signal when the voltage falls below a specified threshold
  • Ensures proper operation of the system by resetting it when necessary
• Package: 16-pin wide SOIC (Small Outline Integrated Circuit)
• Essence: Voltage monitoring and reset functionality in a compact IC package
• Packaging/Quantity: Available in tape and reel packaging, with 250 units per reel

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Threshold Voltage Options: 4.65V, 4.40V, 4.00V, or adjustable
• Reset Timeout Period: 140ms (min)
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 20µA (typ)
• Active Supply Current: 500µA (max)

Pin Configuration

The MAX691AEWE/GG8 IC has the following pin configuration:

1. VCC - Power Supply Input
2. GND - Ground
3. RESET - Output Reset Signal
4. MR - Manual Reset Input
5. TH - Threshold Voltage Selection Input
6. CT - Capacitor Connection for Reset Timeout
7. GND - Ground
8. GND - Ground
9. GND - Ground
10. GND - Ground
11. GND - Ground
12. GND - Ground
13. GND - Ground
14. GND - Ground
15. GND - Ground
16. VCC - Power Supply Input

Functional Features

• Monitors the power supply voltage continuously
• Generates a reset signal when the voltage drops below the set threshold
• Reset signal remains active for a specified timeout period
• Manual reset input allows for external system reset control
• Threshold voltage selection input provides flexibility in setting the desired voltage level
• Capacitor connection for reset timeout allows adjustment of the reset duration

Advantages and Disadvantages

Advantages

• Compact and integrated solution for voltage monitoring and reset functionality
• Wide supply voltage range allows compatibility with various systems
• Adjustable threshold voltage option provides flexibility
• Low quiescent current minimizes power consumption
• Manual reset input enables external control over system reset

Disadvantages

• Limited number of threshold voltage options
• Fixed reset timeout period may not be suitable for all applications
• Requires an external capacitor for reset timeout adjustment

Working Principles

The MAX691AEWE/GG8 operates by continuously monitoring the power supply voltage. When the voltage falls below the set threshold, it generates a reset signal. This signal remains active for a specified timeout period, ensuring that the system is properly reset. The manual reset input allows for external control over the reset function. The threshold voltage selection input and capacitor connection provide flexibility in setting the desired voltage level and adjusting the reset duration.

Detailed Application Field Plans

The MAX691AEWE/GG8 is commonly used in various electronic systems where voltage monitoring and reset functionality are critical. Some application fields include:

1. Microcontrollers and Microprocessors: Ensures proper system initialization and prevents erratic behavior due to voltage fluctuations.
2. Industrial Control Systems: Provides reliable reset functionality for critical equipment and processes.
3. Automotive Electronics: Monitors the power supply voltage in automotive systems, preventing potential malfunctions.
4. Medical Devices: Ensures safe operation and reliable reset capability in medical equipment.
5. Communication Systems: Guarantees stable operation and quick recovery from power supply disturbances.

Detailed and Complete Alternative Models

1. MAX691AWESE/GG8: Similar to MAX691AEWE/GG8, but available in a smaller 16-pin narrow SOIC package.
2. MAX690AEPA+: Voltage monitor and reset circuit with adjustable threshold voltage, available in an 8-pin DIP (Dual Inline Package).
3. MAX809REUR+: Microprocessor supervisory circuit with reset output, available in a 5-pin SOT-23 package.

These alternative models offer similar functionality to the MAX691AEWE/GG8 and can be considered based on specific requirements and package preferences.

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