MAX708TEUA+T

Product Overview

• Category: Integrated Circuit
• Use: Voltage Monitor and Reset Circuit
• Characteristics: Low-power, precision voltage monitoring, reset output
• Package: SOT-23-8
• Essence: Monitors the power supply voltage and generates a reset signal when the voltage drops below a specified threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Options: 2.63V, 3.08V, 4.38V, 4.63V
• Reset Timeout Period Options: 140ms, 280ms, 560ms, 1120ms
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX708TEUA+T has the following pin configuration:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| MR RST |-- Pin 2: Reset Output (RST) --| TH RESET|-- Pin 3: Threshold Input (TH) --| TO RESET|-- Pin 4: Timeout Input (TO) --| NC |-- Pin 5: No Connection (NC) --| NC |-- Pin 6: No Connection (NC) --| NC |-- Pin 7: No Connection (NC) --| NC |-- Pin 8: No Connection (NC) |___________| ```

Functional Features

• Monitors the power supply voltage continuously.
• Generates a reset signal when the voltage drops below the specified threshold.
• Provides a timeout period to ensure proper system reset.
• Low-power consumption for battery-powered applications.
• Precision voltage monitoring for accurate reset signal generation.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - Multiple threshold voltage and timeout period options provide flexibility. - Small package size (SOT-23-8) saves board space. - Low-power operation extends battery life. - Accurate voltage monitoring ensures reliable system reset.

Disadvantages: - Limited number of available threshold voltage and timeout period options. - No built-in hysteresis feature for noise immunity.

Working Principles

The MAX708TEUA+T monitors the power supply voltage using the TH pin. When the voltage drops below the specified threshold, the internal comparator triggers a reset signal on the RST pin. The TO pin sets the timeout period, ensuring that the reset signal remains active for a specific duration even if the voltage returns to normal.

Detailed Application Field Plans

The MAX708TEUA+T is commonly used in various electronic systems where reliable power supply monitoring and reset functionality are required. Some application fields include:

1. Microcontroller Systems: Ensures proper initialization and system stability during power-up or voltage fluctuations.
2. Industrial Control Systems: Provides reliable reset functionality for critical control units, preventing system malfunctions.
3. Automotive Electronics: Monitors the vehicle's power supply to ensure safe operation and prevent damage to sensitive components.
4. Medical Devices: Guarantees proper functioning and prevents data loss in medical equipment during power interruptions.
5. Home Automation: Enables automatic system recovery and restarts in case of power failures, maintaining uninterrupted operation.

Detailed and Complete Alternative Models

1. MAX705ESA+: Similar to MAX708TEUA+T but available in an SOIC-8 package.
2. MAX809SEUR-T: Voltage monitor and reset circuit with adjustable threshold voltage and timeout period.
3. MAX811SEUS-T: Voltage monitor and reset circuit with manual reset input and adjustable threshold voltage.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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