MAX6423US23+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, precision voltage monitoring
• Package: SOT-23
• Essence: Provides accurate monitoring and reset generation for microprocessors and other digital systems.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.32V, 2.93V, 3.08V, 4.63V
• Reset Timeout Period: Adjustable or Fixed (140ms, 280ms, 560ms, 1120ms)
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1µA (typical)

Detailed Pin Configuration

The MAX6423US23+T has a total of 5 pins:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VCC: Positive supply voltage
5. TH: Threshold voltage selection pin

Functional Features

• Accurate Voltage Monitoring: The MAX6423US23+T provides precise voltage monitoring with selectable threshold voltages.
• Reset Generation: It generates an active-low reset signal when the monitored voltage falls below the set threshold.
• Manual Reset Input: The MR pin allows for manual reset control, overriding the automatic reset generation.
• Adjustable Reset Timeout: The reset timeout period can be adjusted using external capacitors or set to fixed values.
• Low Power Consumption: With a quiescent current of only 1µA, it is suitable for power-sensitive applications.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable system operation. - Flexible threshold voltage options cater to different system requirements. - Adjustable reset timeout allows customization for specific applications. - Low power consumption prolongs battery life in portable devices.

Disadvantages: - Limited to SOT-23 package, which may not be suitable for all PCB layouts. - Fixed or limited threshold voltage options may not cover all voltage monitoring needs.

Working Principles

The MAX6423US23+T operates by comparing the monitored voltage with the selected threshold voltage. When the monitored voltage drops below the threshold, the reset output is activated, signaling a system reset. The reset timeout period determines how long the reset signal remains active after the voltage returns above the threshold.

Detailed Application Field Plans

The MAX6423US23+T finds applications in various fields, including:

1. Microprocessor Systems: Provides reliable reset generation for microcontrollers and digital processors.
2. Communication Equipment: Ensures proper system initialization and recovery after power fluctuations.
3. Industrial Control Systems: Monitors critical voltages to prevent malfunctions and ensure safe operation.
4. Automotive Electronics: Protects sensitive electronic components from voltage variations and transients.
5. Battery-Powered Devices: Maximizes battery life by efficiently managing power-on and power-off sequences.

Detailed and Complete Alternative Models

1. MAX6423US23+T: The standard version of the MAX6423 with a fixed threshold voltage of 2.32V.
2. MAX6423US29+T: Similar to the MAX6423US23+T but with a higher threshold voltage of 2.93V.
3. MAX6423US30+T: Offers a threshold voltage of 3.08V, suitable for systems with higher voltage tolerances.
4. MAX6423US46+T: Provides a threshold voltage of 4.63V, ideal for applications requiring higher voltage monitoring.

These alternative models offer flexibility in selecting the appropriate threshold voltage for specific system requirements.

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