MAX707CUA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Detector
• Characteristics: Low-power, precision voltage monitoring
• Package: 8-pin micro small outline package (MSOP)
• Essence: Monolithic CMOS voltage detector
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 5.0V
• Quiescent Current: 3µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active low push-pull
• Reset Timeout Period: 140ms (typical)

Pin Configuration

The MAX707CUA+T has the following pin configuration:

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

Functional Features

• Precision voltage monitoring for power supply supervision
• Detects undervoltage and overvoltage conditions
• Provides a reset signal during power-up and power-down
• Manual reset input for system control
• Adjustable threshold voltage options
• Low quiescent current for power-sensitive applications
• Small form factor package for space-constrained designs

Advantages and Disadvantages

Advantages: - High precision voltage monitoring - Wide supply voltage range - Low power consumption - Small package size - Manual reset capability

Disadvantages: - Limited threshold voltage options - No internal pull-up resistor for manual reset input

Working Principles

The MAX707CUA+T is a monolithic CMOS voltage detector designed to monitor the power supply voltage in electronic systems. It compares the supply voltage with a fixed threshold voltage and generates a reset signal when the voltage falls below or rises above the threshold.

During power-up, the device ensures that the supply voltage reaches a stable level before releasing the reset signal. This prevents erratic behavior of the system due to insufficient power. The reset signal remains active until the supply voltage stabilizes within the specified range.

The manual reset input allows the system to be reset externally, providing additional control over the reset function. The threshold voltage can be selected using an external resistor divider network connected to the TH pin.

Detailed Application Field Plans

The MAX707CUA+T is widely used in various applications where precise voltage monitoring is critical. Some of the common application fields include:

1. Microcontrollers and Microprocessors: Ensuring proper power supply during startup and preventing data corruption.
2. Industrial Control Systems: Monitoring power supply integrity to prevent equipment malfunction or damage.
3. Battery-Powered Devices: Detecting low battery conditions and initiating appropriate actions.
4. Automotive Electronics: Overvoltage protection and power management in vehicle systems.
5. Communication Equipment: Voltage supervision for reliable operation and fault detection.

Detailed and Complete Alternative Models

1. MAX706CUA+T: Similar functionality with a different package (8-pin µMAX).
2. MAX708CUA+T: Higher threshold voltage options (up to 10V) for specific applications.
3. MAX809SEUR+T: Integrated watchdog timer functionality along with voltage monitoring.

These alternative models offer similar voltage monitoring capabilities with slight variations in package type, threshold voltage options, or additional features.

In conclusion, the MAX707CUA+T is a versatile voltage detector IC that provides precise power supply monitoring in various electronic systems. Its low-power consumption, small form factor, and adjustable threshold voltage make it suitable for a wide range of applications.