MAX690RESA+ - English Editing Encyclopedia Entry

Product Overview

Category

MAX690RESA+ belongs to the category of integrated circuits (ICs).

Use

The MAX690RESA+ IC is primarily used for voltage monitoring and reset functions in electronic devices.

Characteristics

• Voltage monitoring: The MAX690RESA+ monitors the supply voltage and provides a reset signal when it falls below a specified threshold.
• Reset function: It ensures that the device resets properly when the power supply voltage returns to an acceptable level.
• Low power consumption: The IC operates with low power consumption, making it suitable for battery-powered applications.

Package

The MAX690RESA+ is available in a small outline package (SOIC) with eight pins.

Essence

The essence of the MAX690RESA+ lies in its ability to monitor voltage levels and provide reliable reset signals, ensuring proper functioning of electronic devices.

Packaging/Quantity

The MAX690RESA+ is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 4.63V, 4.38V, 4.00V, 3.08V, 2.93V, 2.63V, 2.32V, 2.06V
• Reset Timeout Period: Adjustable from 1ms to 1600ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX690RESA+ has the following pin configuration:

1. GND: Ground connection
2. RESET: Active-low reset output
3. VCC: Positive power supply input
4. MR: Manual reset input
5. TH: Threshold voltage selection input
6. CT: Capacitor connection for reset timeout period
7. RESET: Active-low reset output
8. VCC: Positive power supply input

Functional Features

1. Voltage Monitoring: The MAX690RESA+ continuously monitors the supply voltage and compares it with the selected threshold voltage.
2. Reset Signal Generation: When the supply voltage falls below the threshold, the IC generates an active-low reset signal to ensure proper device reset.
3. Adjustable Timeout Period: The reset timeout period can be adjusted using an external capacitor connected to the CT pin.
4. Manual Reset Capability: The MR pin allows for manual reset of the device, overriding the automatic reset function.

Advantages and Disadvantages

Advantages

• Reliable voltage monitoring and reset functionality
• Low power consumption
• Adjustable reset timeout period
• Manual reset capability

Disadvantages

• Limited threshold voltage options
• Requires an external capacitor for timeout period adjustment

Working Principles

The MAX690RESA+ operates by comparing the supply voltage with the selected threshold voltage. If the supply voltage drops below the threshold, the IC generates an active-low reset signal. The reset timeout period can be adjusted using an external capacitor connected to the CT pin. Additionally, the device can be manually reset using the MR pin.

Detailed Application Field Plans

The MAX690RESA+ finds applications in various electronic devices where reliable voltage monitoring and reset functions are crucial. Some potential application fields include:

1. Microcontrollers: Ensuring proper reset and initialization of microcontroller-based systems.
2. Embedded Systems: Providing reliable reset functionality in embedded systems to prevent erratic behavior.
3. Power Management: Monitoring voltage levels in power management circuits to protect sensitive components.
4. Industrial Control Systems: Ensuring proper reset and recovery in industrial control systems to maintain operational integrity.

Detailed and Complete Alternative Models

1. MAX691RESA+: Similar to MAX690RESA+, but with additional features such as watchdog timer functionality.
2. MAX809RESA+: Voltage monitoring and reset IC with fixed threshold voltage options and a push-pull output configuration.
3. MAX811RESA+: Voltage monitoring and reset IC with adjustable timeout period and manual reset capability.

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