MAX6389XS44D3+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the voltage level of a power supply and generates a reset signal when the voltage falls below a specified threshold.
  • Provides a reliable way to ensure proper system initialization and prevent data corruption or erratic behavior during power-up or brownout conditions.
• Package: SOT23-4
• Essence: Voltage monitoring and reset functionality in a compact package.
• Packaging/Quantity: Tape and Reel, 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.30V, 3.63V, 4.38V, 4.63V
• Reset Timeout Period: Adjustable from 1ms to 1600ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6389XS44D3+T IC has the following pin configuration:

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Pin 1: GND (Ground) Pin 2: MR (Manual Reset Input) Pin 3: RESET (Reset Output) Pin 4: VCC (Power Supply)

Functional Features

• Voltage Monitoring: The MAX6389XS44D3+T continuously monitors the voltage level at the VCC pin.
• Reset Generation: When the voltage falls below the programmed threshold, the IC generates a reset signal on the RESET pin.
• Manual Reset: The MR pin allows for manual reset input, overriding the voltage monitoring function.
• Adjustable Timeout: The reset timeout period can be adjusted to meet specific system requirements.

Advantages and Disadvantages

Advantages: - Compact package size allows for space-saving integration in various applications. - Wide supply voltage range enables compatibility with different power supply configurations. - Adjustable reset timeout period provides flexibility for system initialization.

Disadvantages: - Limited threshold voltage options may not cover all voltage monitoring requirements. - Lack of additional features or customization options compared to more advanced voltage monitoring ICs.

Working Principles

The MAX6389XS44D3+T operates by comparing the voltage at the VCC pin with the programmed threshold voltage. When the VCC voltage falls below the threshold, the internal circuitry generates a reset signal on the RESET pin. The reset signal remains active until the VCC voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MAX6389XS44D3+T is commonly used in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some application fields include:

1. Microcontrollers: Ensuring proper initialization and preventing data corruption during power-up or brownout conditions.
2. Industrial Control Systems: Providing stable operation and preventing erratic behavior caused by voltage fluctuations.
3. Automotive Electronics: Safeguarding critical components from voltage drops and ensuring system reliability.
4. Power Management: Enabling efficient power management by initiating system resets when necessary.

Detailed and Complete Alternative Models

1. MAX6389XS44D5+T: Similar to MAX6389XS44D3+T but with different threshold voltage options.
2. MAX6389XS44D6+T: Enhanced version with additional features such as power-on reset delay and watchdog timer.
3. MAX6389XS44D7+T: Higher precision variant with tighter threshold voltage tolerances.

These alternative models offer varying specifications and features to cater to different voltage monitoring requirements.

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