MAX691AESE/GG8

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the power supply voltage of a system and generates a reset signal when the voltage drops below a specified threshold.
  • Provides a reliable way to ensure proper operation of microprocessors, microcontrollers, and other digital systems.
• Package: Small Outline Integrated Circuit (SOIC)
• Essence: Voltage monitoring and reset functionality in a compact package.
• Packaging/Quantity: Available in tape and reel packaging with a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Threshold Voltage Options: 4.63V, 4.38V, 4.00V, or adjustable
• Reset Timeout Period: 140ms (min) or adjustable
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active-Low Push-Pull or Open-Drain

Pin Configuration

The MAX691AESE/GG8 IC has a total of 16 pins arranged as follows:

```

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| | | U1 | |___________|

Pin Configuration: 1. VCC 2. GND 3. RESET 4. RESET OUT 5. MR 6. TH 7. CT 8. GND 9. GND 10. GND 11. GND 12. GND 13. GND 14. GND 15. GND 16. VCC ```

Functional Features

• Monitors the power supply voltage continuously.
• Generates a reset signal when the voltage falls below the set threshold.
• Adjustable threshold voltage and reset timeout period for customization.
• Provides a debounced manual reset input (MR) for system initialization.
• Offers a reset output (RESET OUT) to indicate the system's reset status.

Advantages and Disadvantages

Advantages: - Compact size and easy integration into various systems. - Wide supply voltage range allows compatibility with different power sources. - Adjustable threshold voltage and reset timeout period provide flexibility. - Debounced manual reset input ensures reliable system initialization.

Disadvantages: - Limited number of threshold voltage options. - Reset timeout period may not be suitable for all applications.

Working Principles

The MAX691AESE/GG8 operates by monitoring the power supply voltage using an internal voltage comparator. When the voltage drops below the set threshold, the IC generates a reset signal that can be used to reset the system. The adjustable threshold voltage allows customization based on specific requirements. The reset timeout period ensures that the reset signal remains active for a specified duration to allow the system to stabilize before resuming normal operation.

Detailed Application Field Plans

The MAX691AESE/GG8 is commonly used in various electronic systems where voltage monitoring and reset functionality are crucial. Some application fields include:

1. Microcontrollers and Microprocessors: Ensures proper system initialization and prevents erratic behavior due to insufficient power supply voltage.
2. Embedded Systems: Provides reliable reset functionality for embedded systems, preventing lock-ups or malfunctions caused by power fluctuations.
3. Industrial Control Systems: Monitors power supply voltage in industrial control systems to ensure stable and safe operation.
4. Automotive Electronics: Protects automotive electronic systems from voltage dips or spikes, ensuring continuous and reliable operation.
5. Medical Devices: Ensures the integrity and reliability of critical medical devices by monitoring power supply voltage and generating resets when necessary.

Detailed and Complete Alternative Models

1. MAX691AESA+: Similar to MAX691AESE/GG8 but available in a different package (SOIC).
2. MAX691ACPE+: DIP package alternative to MAX691AESE/GG8.
3. MAX691AEEI+: Smaller package option (QSOP) with similar functionality.

These alternative models offer similar voltage monitoring and reset circuit functionality, but may differ in package type and pin configuration.

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