MAX709TCSA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, precision voltage monitoring
• Package: Surface Mount Technology (SMT), 8-pin SOIC package
• Essence: Monitors the power supply voltage and provides a reset signal when the voltage falls below a predetermined threshold
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 2.63V, 3.08V, 4.38V, or adjustable
• Reset Timeout Period: 140ms, 560ms, or adjustable
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 7µA (typical)

Pin Configuration

The MAX709TCSA+T has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | GND | Ground | | 2 | RESET | Reset Output| | 3 | MR | Manual Reset Input | | 4 | VCC | Supply Voltage | | 5 | TH | Threshold Voltage Selection | | 6 | CT | Capacitor Connection | | 7 | RESET | Reset Output | | 8 | NC | No Connect |

Functional Features

• Monitors the power supply voltage and generates a reset signal when the voltage drops below the set threshold.
• Provides a manual reset input for immediate system reset.
• Adjustable threshold voltage and reset timeout period options for flexibility.
• Low quiescent current consumption for power-sensitive applications.
• Wide supply voltage range allows compatibility with various systems.

Advantages

• Precise voltage monitoring ensures reliable system operation.
• Adjustable threshold voltage and reset timeout period offer customization options.
• Low quiescent current consumption helps conserve power in battery-operated devices.
• Small form factor and surface mount package enable space-efficient designs.
• Wide supply voltage range provides versatility in different applications.

Disadvantages

• Limited number of threshold voltage options may not suit all voltage monitoring requirements.
• Lack of detailed application notes may require additional research for specific implementations.
• Manual reset input may introduce the possibility of accidental resets if not properly handled.

Working Principles

The MAX709TCSA+T operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage falls below the set threshold, the reset output is activated, signaling a system reset. The threshold voltage can be adjusted or selected from available options to match the desired voltage level. The reset timeout period determines how long the reset signal remains active after the voltage returns to normal. A manual reset input is also provided for immediate system reset when required.

Detailed Application Field Plans

The MAX709TCSA+T finds applications in various fields, including:

1. Battery-powered devices: Provides voltage monitoring and reset functionality to ensure proper operation and prevent data corruption during low battery conditions.
2. Industrial control systems: Monitors power supply voltages in critical control systems, triggering resets when voltage drops occur to maintain system integrity.
3. Automotive electronics: Ensures stable operation of automotive electronic systems by monitoring supply voltages and initiating resets when necessary.
4. Telecommunications equipment: Protects sensitive telecom equipment from voltage fluctuations, preventing system malfunctions and ensuring uninterrupted communication.

Detailed and Complete Alternative Models

1. MAX708TCSA+T: Similar to MAX709TCSA+T but with a fixed threshold voltage of 4.63V.
2. MAX706TCSA+T: Voltage supervisor with adjustable threshold voltage and a push-pull reset output.
3. MAX705TCSA+T: Low-power voltage monitor with fixed threshold voltage options of 4.63V or 4.38V.

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