MAX708RCUA-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low-power, Precision, Reset Output
• Package: UMAX-8
• Essence: Monitors the voltage level of a power supply and provides a reset signal when the voltage drops below a specified threshold.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V
• Reset Timeout Period: 140ms (min)
• Quiescent Current: 1µA (typ)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX708RCUA-T has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | GND | Ground | | 2 | RESET | Reset Output| | 3 | VCC | Supply Voltage | | 4 | TH | Threshold Voltage Selection | | 5 | MR | Manual Reset Input | | 6 | GND | Ground | | 7 | GND | Ground | | 8 | GND | Ground |

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the selected threshold voltage.
• Provides a manual reset input for immediate system reset.
• Low quiescent current consumption ensures minimal power usage.
• Precision voltage monitoring with selectable threshold options.
• Reset timeout period prevents false resets during power-up.

Advantages

• Compact UMAX-8 package allows for space-saving integration into various applications.
• Wide supply voltage range enables compatibility with different power sources.
• Low quiescent current consumption prolongs battery life in portable devices.
• Precision voltage monitoring ensures reliable system operation.
• Reset timeout period prevents erratic resets during power fluctuations.

Disadvantages

• Limited threshold voltage options may not cater to all voltage monitoring requirements.
• Lack of adjustable reset timeout period may limit flexibility in certain applications.
• Manual reset input may require additional external components for proper functionality.

Working Principles

The MAX708RCUA-T operates by continuously monitoring the supply voltage using an internal voltage reference and comparator. When the voltage drops below the selected threshold, the reset output is activated, signaling a low-voltage condition. The reset remains active until the voltage rises above the threshold or a manual reset signal is applied.

Detailed Application Field Plans

The MAX708RCUA-T finds applications in various fields where voltage monitoring and system reset functionality are crucial. Some potential application areas include:

1. Battery-Powered Devices: Ensuring proper shutdown and system reset in low-power devices such as wearables, IoT sensors, and handheld instruments.
2. Industrial Control Systems: Monitoring power supply integrity in PLCs, motor control systems, and automation equipment to prevent malfunctions and ensure safe operation.
3. Automotive Electronics: Providing voltage supervision and reset capabilities in automotive ECUs, infotainment systems, and safety modules to maintain system reliability.
4. Medical Equipment: Enabling accurate voltage monitoring and system reset in medical devices like patient monitors, infusion pumps, and diagnostic equipment for patient safety.

Detailed and Complete Alternative Models

1. MAX706SCPA+: Similar to MAX708RCUA-T but available in a DIP package.
2. MAX809SEUR-T: Voltage monitor with a push-pull reset output and adjustable reset timeout period.
3. MAX811TEUS-T: Supervisory circuit with a watchdog timer and manual reset input.

These alternative models offer similar voltage monitoring and reset functionalities, catering to different package preferences and additional features.

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