Maxim Integrated
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MAX642AESA+T
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MAX642AESA+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Supervisor
  • Characteristics: Low-power, Precision, Adjustable Thresholds
  • Package: 8-pin SOIC (Small Outline Integrated Circuit)
  • Essence: Monitoring and controlling voltage levels in electronic systems
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 1.2V to 5.5V
  • Threshold Voltage Options: Adjustable or Fixed
  • Reset Timeout Period: Selectable options ranging from 1ms to 640ms
  • Operating Temperature Range: -40°C to +85°C
  • Quiescent Current: 7µA (typical)

Pin Configuration

The MAX642AESA+T features an 8-pin SOIC package with the following pin configuration:

  1. GND: Ground
  2. RESET: Reset Output
  3. MR: Manual Reset Input
  4. TH: Threshold Input
  5. VCC: Supply Voltage
  6. NC: No Connection
  7. RESET: Reset Output
  8. GND: Ground

Functional Features

  • Voltage Monitoring: The MAX642AESA+T continuously monitors the supply voltage and provides a reset signal when it falls below a certain threshold.
  • Adjustable Threshold: The threshold voltage can be adjusted using an external resistor divider network, allowing flexibility in setting the desired voltage level for triggering the reset signal.
  • Precision: The device offers high accuracy in voltage monitoring, ensuring reliable operation of the system.
  • Low Power Consumption: With a quiescent current of only 7µA, the MAX642AESA+T minimizes power consumption, making it suitable for battery-powered applications.
  • Reset Timeout Period: The reset signal remains active for a user-selectable timeout period, allowing sufficient time for the system to stabilize before resuming normal operation.
  • Manual Reset: The MAX642AESA+T provides a manual reset input (MR) that allows an external signal to force a reset condition.

Advantages and Disadvantages

Advantages: - Adjustable threshold voltage provides flexibility in voltage monitoring. - Low power consumption extends battery life in portable applications. - Precision voltage monitoring ensures reliable system operation. - Manual reset input allows external control over the reset condition.

Disadvantages: - Limited number of threshold voltage options available. - Not suitable for high-voltage applications.

Working Principles

The MAX642AESA+T operates by comparing the supply voltage with a reference threshold voltage. When the supply voltage falls below the threshold, the reset output is activated, indicating a low-voltage condition. The threshold voltage can be adjusted using an external resistor divider network connected to the TH pin. The reset signal remains active for a user-selectable timeout period, allowing the system to stabilize before resuming normal operation. The device also includes a manual reset input (MR) that can force a reset condition when triggered externally.

Application Field Plans

The MAX642AESA+T finds applications in various electronic systems where voltage monitoring and control are critical. Some potential application fields include:

  1. Battery-Powered Devices: Portable devices such as smartphones, tablets, and wearables can benefit from the low-power consumption and precision voltage monitoring capabilities of the MAX642AESA+T.
  2. Industrial Control Systems: The device can be used in industrial control systems to monitor and control voltage levels, ensuring stable and reliable operation.
  3. Automotive Electronics: In automotive applications, the MAX642AESA+T can be employed to monitor the vehicle's electrical system, providing protection against undervoltage conditions.
  4. Power Management: The device can be integrated into power management circuits to monitor and control voltage levels in various power supply systems.

Alternative Models

  • MAX642BESA+T: Similar to the MAX642AESA+T, but with additional features such as adjustable reset timeout period.
  • MAX643AESA+T: A variant of the MAX642AESA+T with fixed threshold voltage options.
  • MAX644AESA+T: Offers similar functionality as the MAX642AESA+T, but in a different package (14-pin SOIC).

(Note: The alternative models mentioned above are just a few examples. There are other alternatives available in the market.)

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de MAX642AESA+T en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of MAX642AESA+T in technical solutions:

  1. Q: What is the MAX642AESA+T? A: The MAX642AESA+T is a voltage monitor and reset circuit IC manufactured by Maxim Integrated. It is commonly used for power supply monitoring and system reset functions.

  2. Q: What is the operating voltage range of MAX642AESA+T? A: The operating voltage range of MAX642AESA+T is typically between 1.6V and 5.5V.

  3. Q: How does the MAX642AESA+T provide voltage monitoring? A: The MAX642AESA+T has an internal voltage reference and comparator that monitors the input voltage. It compares the input voltage with a preset threshold and generates a reset signal if the voltage falls below the threshold.

  4. Q: Can I adjust the voltage threshold for monitoring using MAX642AESA+T? A: Yes, the voltage threshold can be adjusted using external resistors connected to the VTH pin of the MAX642AESA+T.

  5. Q: What is the typical reset time delay of MAX642AESA+T? A: The typical reset time delay of MAX642AESA+T is around 140ms.

  6. Q: Can I use MAX642AESA+T for both positive and negative voltage monitoring? A: No, MAX642AESA+T is designed for positive voltage monitoring only. It cannot be used for negative voltage monitoring.

  7. Q: What is the maximum current sinking capability of the RESET output of MAX642AESA+T? A: The RESET output of MAX642AESA+T can sink up to 20mA of current.

  8. Q: Can I use MAX642AESA+T in battery-powered applications? A: Yes, the low quiescent current and wide operating voltage range make MAX642AESA+T suitable for battery-powered applications.

  9. Q: Does MAX642AESA+T have any built-in protection features? A: Yes, MAX642AESA+T has built-in thermal shutdown and short-circuit protection features to ensure safe operation.

  10. Q: What is the package type of MAX642AESA+T? A: MAX642AESA+T is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Please note that these answers are general and may vary depending on the specific application and requirements. It is always recommended to refer to the datasheet and consult with the manufacturer for detailed information.