MAX690ACPA+ - English Editing Encyclopedia Entry

Product Overview

Category

MAX690ACPA+ belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for voltage monitoring and reset functions in various electronic devices.

Characteristics

• Voltage monitoring and reset functionality
• Low power consumption
• Wide operating voltage range
• High accuracy
• Small package size

Package

MAX690ACPA+ is available in a 8-pin PDIP (Plastic Dual In-line Package) format.

Essence

The essence of MAX690ACPA+ lies in its ability to monitor voltage levels and provide a reset signal when necessary, ensuring proper functioning of electronic systems.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 250 units per package.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Reset Threshold Voltage: Adjustable from 1.25V to 4.63V
• Reset Timeout Period: Adjustable from 140ms to 1120ms
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX690ACPA+ has the following pin configuration:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| MR RST |-- Pin 2: Reset Output (RST) --| TH TO |-- Pin 3: Timeout Input (TO) --| TL TR |-- Pin 4: Timeout Output (TR) --| CT C1 |-- Pin 5: Capacitor Connection (C1) --| C2 C3 |-- Pin 6: Capacitor Connection (C2) --| C4 C5 |-- Pin 7: Capacitor Connection (C3) --| C6 VCC |-- Pin 8: Supply Voltage (VCC) |___________| ```

Functional Features

• Voltage monitoring: The MAX690ACPA+ continuously monitors the supply voltage and compares it to a user-adjustable threshold.
• Reset signal generation: When the monitored voltage falls below the threshold, the device generates a reset signal to ensure proper system operation.
• Adjustable timeout period: The reset signal remains active for a user-defined period of time, allowing the system to stabilize before resuming normal operation.

Advantages and Disadvantages

Advantages

• High accuracy in voltage monitoring
• Wide operating voltage range allows compatibility with various systems
• Low power consumption
• Compact package size enables easy integration into electronic designs

Disadvantages

• Limited number of pins may restrict additional functionality
• Requires external capacitors for proper operation

Working Principles

The MAX690ACPA+ operates by comparing the supply voltage with the user-adjustable threshold voltage. If the supply voltage drops below this threshold, indicating a potential malfunction or power loss, the device generates a reset signal. This signal remains active for a user-defined timeout period, allowing the system to stabilize before resuming normal operation.

Detailed Application Field Plans

The MAX690ACPA+ finds applications in various electronic devices that require reliable voltage monitoring and reset functionality. Some common application fields include:

1. Microcontrollers: Ensuring proper system initialization and preventing data corruption during power fluctuations.
2. Industrial Control Systems: Providing reliable reset functionality to maintain system integrity in critical industrial environments.
3. Automotive Electronics: Monitoring and resetting microcontrollers and other components to prevent malfunctions and ensure safe operation.
4. Medical Devices: Guaranteeing stable operation and preventing data loss in medical equipment that relies on accurate voltage levels.

Detailed and Complete Alternative Models

1. MAX691A - Similar functionality with adjustable reset threshold and timeout period.
2. MAX811 - Voltage monitor and reset IC with additional power-on reset functionality.
3. MAX809 - Low-power microprocessor reset circuit with fixed reset threshold voltage.

These alternative models offer similar features and can be considered as substitutes for the MAX690ACPA+ in various applications.

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