MAX641ACSA

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics: Low-power, Precision, Adjustable Threshold
• Package: Small Outline Integrated Circuit (SOIC)
• Essence: Monitors voltage levels and provides reset signals to microcontrollers or other digital circuits.
• Packaging/Quantity: Tube packaging, 25 pieces per tube.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Adjustable Threshold Voltage Range: 1.2V to VCC - 0.6V
• Quiescent Current: 10µA (typical)
• Power-On Reset Delay: 100ms (typical)
• Active-Low RESET Output: Push-pull or open-drain configuration

Detailed Pin Configuration

1. GND: Ground reference
2. TRIP: Threshold adjustment pin
3. RESET: Active-low reset output
4. VCC: Supply voltage input

Functional Features

• Monitors the supply voltage and asserts a reset signal when it falls below a programmable threshold.
• Adjustable threshold voltage allows customization for different applications.
• Provides a reliable reset signal during power-up, power-down, and brownout conditions.
• Low quiescent current ensures minimal power consumption.
• Can be used with various microcontrollers and digital circuits.

Advantages

• Precise voltage monitoring helps prevent data corruption or erratic behavior in digital systems.
• Adjustable threshold voltage accommodates different voltage requirements.
• Low-power operation extends battery life in portable devices.
• Compact SOIC package enables space-saving on PCBs.
• Easy integration into existing circuit designs.

Disadvantages

• Limited to monitoring and resetting voltage levels; does not provide additional functionality.
• Requires external components for proper operation.
• Not suitable for high-voltage applications.

Working Principles

The MAX641ACSA is a voltage monitor and reset circuit that operates by comparing the supply voltage with a programmable threshold voltage. When the supply voltage falls below the threshold, the RESET pin is asserted low, indicating a reset condition. The threshold voltage can be adjusted using the TRIP pin to meet specific application requirements.

Detailed Application Field Plans

• Embedded Systems: Ensures reliable operation of microcontrollers during power fluctuations.
• Industrial Automation: Provides reset signals to digital control circuits for safe and controlled system startup.
• Automotive Electronics: Monitors battery voltage and triggers a reset when it drops below a critical level.
• Consumer Electronics: Protects sensitive digital components from voltage variations and ensures proper functioning.

Detailed and Complete Alternative Models

1. MAX642ACSA: Similar to MAX641ACSA but with an active-high RESET output.
2. MAX638BCPA: Voltage monitor and reset circuit with fixed threshold voltage.
3. MAX6710EXS+: Dual-voltage monitor and reset circuit with adjustable thresholds.

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