MAX706ESA+TG002

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, microprocessor reset circuit
• Package: SOIC-8
• Essence: Provides power-on reset and watchdog timer functions
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Voltage Options: 4.63V, 4.38V, 4.00V, 3.08V, 2.93V, 2.63V, 2.32V, 2.06V
• Watchdog Timeout Period: 1.6s, 3.2s, 6.4s, 12.8s, 25.6s, 51.2s, 102.4s, 204.8s

Detailed Pin Configuration

The MAX706ESA+TG002 IC has the following pin configuration:

1. RESET: Active-low reset output
2. GND: Ground reference
3. MR: Manual reset input
4. VCC: Positive supply voltage
5. WDI: Watchdog input
6. NC: No connection
7. NC: No connection
8. RESET: Active-low reset output

Functional Features

• Power-On Reset: Generates a reset signal when the supply voltage rises above the reset threshold voltage.
• Watchdog Timer: Monitors the activity of a microprocessor and generates a reset signal if it fails to toggle the watchdog input within the specified timeout period.
• Manual Reset: Allows for an external reset signal to be applied to force a system reset.

Advantages and Disadvantages

Advantages: - Low-power consumption - Wide supply voltage range - Multiple reset threshold voltage options - Various watchdog timeout period options

Disadvantages: - Limited number of available pin configurations - Lack of built-in hysteresis for reset threshold voltage

Working Principles

The MAX706ESA+TG002 is designed to ensure reliable operation of microprocessor-based systems. It monitors the supply voltage and microprocessor activity to provide necessary reset signals.

Upon power-up, the power-on reset circuit generates a reset signal until the supply voltage reaches the specified threshold level. This ensures that the microprocessor starts in a known state.

The watchdog timer continuously monitors the activity of the microprocessor by expecting a periodic toggle of the watchdog input. If the microprocessor fails to toggle the watchdog input within the specified timeout period, the watchdog timer generates a reset signal to restart the system.

The manual reset input allows an external signal to force a system reset, providing additional flexibility in system control.

Detailed Application Field Plans

The MAX706ESA+TG002 is commonly used in various applications where reliable microprocessor operation is critical. Some typical application fields include:

1. Embedded Systems: Provides essential reset functionality for microcontroller-based embedded systems.
2. Industrial Automation: Ensures reliable operation of industrial control systems, preventing lock-ups or malfunctions.
3. Automotive Electronics: Used in automotive electronic control units (ECUs) to monitor and reset microprocessors in case of failures.
4. Medical Devices: Ensures proper functioning of medical equipment by monitoring and resetting microprocessors when necessary.
5. Communication Systems: Used in networking devices and communication equipment to maintain system integrity.

Detailed and Complete Alternative Models

1. MAX705ESA+TG002: Similar to MAX706ESA+TG002 but with different reset threshold voltage options.
2. MAX707ESA+TG002: Voltage supervisor IC with integrated battery backup switchover circuitry.
3. MAX708ESA+TG002: Voltage supervisor IC with adjustable reset threshold voltage and watchdog timeout period.

These alternative models offer similar functionality with slight variations in features and specifications.

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