MAX636AEPA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX636AEPA+ is a voltage monitor and reset circuit IC. It is designed to monitor the power supply voltage of electronic devices and provide a reset signal when the voltage falls below a certain threshold.

Characteristics: - Low-power consumption - Wide operating voltage range - Adjustable reset threshold - Precision monitoring - Small form factor

Package: The MAX636AEPA+ is available in an 8-pin DIP (Dual Inline Package) or SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of the MAX636AEPA+ is its ability to ensure proper functioning of electronic devices by monitoring the power supply voltage and initiating a reset when necessary.

Packaging/Quantity: The MAX636AEPA+ is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Range: 1.2V to VCC-100mV
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)

Pin Configuration

The MAX636AEPA+ has the following pin configuration:

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| | --| RESET |-- --| GND |-- --| MR |-- --| VCC |-- --| RESET_OUT |-- --| THRESHOLD |-- --| CAP |-- |___________| ```

• RESET: Active-low reset input
• GND: Ground reference
• MR: Manual reset input
• VCC: Power supply voltage input
• RESET_OUT: Reset output
• THRESHOLD: Threshold voltage adjustment pin
• CAP: Capacitor connection pin

Functional Features

1. Voltage Monitoring: The MAX636AEPA+ continuously monitors the power supply voltage and compares it to the user-adjustable threshold voltage.
2. Reset Signal Generation: When the power supply voltage falls below the threshold, the MAX636AEPA+ generates an active-low reset signal.
3. Manual Reset: The MR pin allows for manual initiation of a reset signal, overriding the automatic monitoring function.
4. Adjustable Threshold: The THRESHOLD pin enables the user to set the desired voltage threshold for triggering a reset.
5. Reset Timeout: The MAX636AEPA+ includes a reset timeout feature that ensures the reset signal is not held indefinitely.

Advantages and Disadvantages

Advantages: - Low-power consumption makes it suitable for battery-powered devices. - Wide operating voltage range allows for compatibility with various power supply voltages. - Adjustable reset threshold provides flexibility in different applications. - Precision monitoring ensures accurate detection of voltage drops. - Small form factor saves space on PCBs.

Disadvantages: - Limited reset timeout period may not be suitable for certain applications requiring longer timeouts. - Lack of built-in hysteresis may result in multiple reset signals during voltage fluctuations.

Working Principles

The MAX636AEPA+ operates by comparing the power supply voltage with the user-adjustable threshold voltage. When the power supply voltage falls below the threshold, the internal circuitry generates an active-low reset signal. This signal remains active until the power supply voltage rises above the threshold or a reset timeout period elapses.

Detailed Application Field Plans

The MAX636AEPA+ finds applications in various electronic devices where reliable voltage monitoring and reset functionality are crucial. Some potential application fields include: - Microcontrollers and microprocessors - Embedded systems - Industrial control systems - Power management circuits - Communication devices

Detailed and Complete Alternative Models

1. MAX638AEPA+: Similar to the MAX636AEPA+, but with an active-high reset output.
2. MAX631AEPA+: Voltage monitor and reset circuit IC with fixed threshold voltage.
3. MAX811TEUS-T: Microprocessor supervisory circuit with adjustable reset threshold and watchdog timer functionality.

These alternative models offer similar voltage monitoring and reset capabilities, catering to different application requirements.

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