MAX6421US46+T

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Adjustable Thresholds
• Package: SOT23-6
• Essence: Monitors and controls the voltage levels in electronic systems
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V, 4.63V
• Quiescent Current: 1µA (typical)
• Reset Timeout Period: 140ms (typical)

Detailed Pin Configuration

The MAX6421US46+T has a total of six pins arranged as follows: 1. GND: Ground connection 2. RESET: Active-low reset output 3. MR: Manual reset input 4. TH: Threshold voltage selection input 5. VCC: Positive supply voltage 6. NC: No connection

Functional Features

• Voltage Monitoring: The MAX6421US46+T monitors the supply voltage and generates a reset signal when it falls below a specified threshold.
• Adjustable Thresholds: The device offers multiple threshold voltage options, allowing flexibility in setting the desired voltage level for triggering the reset signal.
• Precision Operation: With low quiescent current and high accuracy, the MAX6421US46+T ensures reliable voltage monitoring without significantly impacting power consumption.
• Reset Timeout: The device includes a reset timeout period to prevent false resets during power-up or transient voltage fluctuations.

Advantages and Disadvantages

Advantages: - Wide supply voltage range enables compatibility with various electronic systems. - Adjustable threshold voltage options provide customization for different applications. - Low quiescent current minimizes power consumption. - Precision operation ensures accurate voltage monitoring.

Disadvantages: - Limited number of threshold voltage options may not cater to all specific requirements. - SOT23-6 package may be challenging to solder for some users.

Working Principles

The MAX6421US46+T operates by comparing the supply voltage with the selected threshold voltage. When the supply voltage drops below the threshold, the device generates an active-low reset signal. This signal can be used to initiate system resets or trigger other actions as required. The reset timeout period prevents false resets during power-up or transient voltage fluctuations.

Detailed Application Field Plans

The MAX6421US46+T finds applications in various electronic systems where reliable voltage monitoring is crucial. Some potential application fields include: 1. Battery-Powered Devices: Ensuring proper shutdown or warning when battery voltage drops below a safe level. 2. Microcontroller Systems: Resetting the microcontroller when the supply voltage falls outside the acceptable range. 3. Industrial Control Systems: Monitoring power supply voltages to prevent damage to sensitive components. 4. Automotive Electronics: Protecting critical circuits from voltage dips or spikes.

Detailed and Complete Alternative Models

1. MAX6422US46+T: Similar to MAX6421US46+T but with different threshold voltage options.
2. MAX6423US46+T: Voltage supervisor with adjustable threshold voltage and additional features like manual reset input.
3. MAX6424US46+T: Dual voltage supervisor with independent threshold voltage settings for two separate supplies.

(Note: These alternative models are provided for reference and may have different specifications and pin configurations. Please refer to the respective datasheets for detailed information.)

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