MAX6821MUK+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX6821MUK+ belongs to the category of integrated circuits (ICs).

Use

This IC is primarily used for voltage monitoring and reset generation in various electronic systems.

Characteristics

• Voltage monitoring: The MAX6821MUK+ can monitor the supply voltage and generate a reset signal when it falls below a specified threshold.
• Reset generation: It provides a reliable reset signal to ensure proper system initialization after power-up or voltage fluctuations.
• Low power consumption: The IC operates at low power levels, making it suitable for battery-powered applications.
• Wide operating voltage range: It can operate within a wide voltage range, typically from 1.6V to 5.5V.
• Adjustable reset threshold: The reset threshold voltage can be set using external resistors, allowing flexibility in different applications.

Package and Quantity

The MAX6821MUK+ is available in a small SOT23-5 package. It is typically sold in reels containing a quantity of 3000 units.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Range: Adjustable through external resistors
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOT23-5

Pin Configuration

The MAX6821MUK+ has five pins arranged as follows:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output (RESET OUT) --| MR |-- Pin 3: Manual Reset Input (MR) --| TH |-- Pin 4: Threshold Setting Input (TH) --| VCC |-- Pin 5: Power Supply (VCC) |___________| ```

Functional Features

1. Voltage Monitoring: The MAX6821MUK+ continuously monitors the supply voltage.
2. Reset Generation: It generates a reset signal when the supply voltage falls below the set threshold.
3. Manual Reset Input: The MR pin allows for manual reset control, overriding the automatic reset generation.
4. Threshold Setting: The TH pin enables the adjustment of the reset threshold voltage using external resistors.
5. Power Supply: The VCC pin provides the necessary power to operate the IC.

Advantages and Disadvantages

Advantages

• Reliable Reset Generation: Ensures proper system initialization after power-up or voltage fluctuations.
• Low Power Consumption: Suitable for battery-powered applications, extending battery life.
• Adjustable Reset Threshold: Provides flexibility in different voltage monitoring scenarios.

Disadvantages

• Limited Pin Configuration: The IC has a fixed pin configuration, limiting its use in certain circuit designs.
• Single Functionality: The MAX6821MUK+ is primarily designed for voltage monitoring and reset generation, lacking additional features.

Working Principles

The MAX6821MUK+ operates by continuously monitoring the supply voltage through the TH pin. When the voltage falls below the set threshold, it triggers the RESET OUT pin, generating a reset signal. This signal can be used to reset microcontrollers, digital logic circuits, or other components within the system. The manual reset input (MR) allows for an external reset control, overriding the automatic reset generation.

Application Field Plans

The MAX6821MUK+ finds applications in various electronic systems that require reliable voltage monitoring and reset generation. Some potential application fields include:

1. Microcontroller Systems: Ensures proper initialization and reliable operation of microcontroller-based systems.
2. Embedded Systems: Provides a reset signal to ensure correct startup and operation of embedded systems.
3. Industrial Control Systems: Monitors power supply voltage in industrial control systems, preventing malfunctions due to voltage fluctuations.
4. Automotive Electronics: Ensures proper functioning of automotive electronic systems by monitoring and resetting critical components.

Alternative Models

1. MAX6822MUK+: Similar to the MAX6821MUK+, but with additional features such as adjustable reset timeout and watchdog timer functionality.
2. MAX6816EUS+: A compact alternative with a different pin configuration, suitable for space-constrained applications.
3. MAX811T: Provides similar voltage monitoring and reset generation capabilities, but in a different package (SOT23-3).

These alternative models offer similar functionality to the MAX6821MUK+ and can be considered based on specific application requirements.

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