MAX636ACSA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics:
  • Monitors the voltage level of a power supply
  • Provides a reset signal when the voltage falls below a specified threshold
  • Prevents system malfunction due to low voltage
• Package: Small Outline Package (SOIC)
• Essence: Ensures reliable operation by monitoring power supply voltage
• Packaging/Quantity: Comes in a tube packaging with 25 units per 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 640ms
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active-Low Push-Pull
• Quiescent Current: 10µA (typical)

Pin Configuration

The MAX636ACSA has a total of 8 pins arranged as follows:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| MR RST |-- Pin 2: Reset Output (Active-Low) --| TH TO |-- Pin 3: Threshold Input --| CT NC |-- Pin 4: Capacitor Connection (CT) / No Connect (NC) --| GND GND |-- Pin 5: Ground (GND) --| VCC GND |-- Pin 6: Supply Voltage (VCC) --| GND GND |-- Pin 7: Ground (GND) --| RST NC |-- Pin 8: Reset Output (Active-Low) / No Connect (NC) |___________| ```

Functional Features

• Monitors the power supply voltage continuously
• Generates a reset signal when the voltage falls below the specified threshold
• Adjustable reset timeout period allows customization for different applications
• Active-low push-pull output ensures compatibility with various systems
• Low quiescent current minimizes power consumption

Advantages and Disadvantages

Advantages: - Reliable voltage monitoring prevents system malfunction - Adjustable reset timeout period provides flexibility - Low quiescent current reduces power consumption

Disadvantages: - Limited threshold voltage options may not suit all applications - Requires an external capacitor for proper operation

Working Principles

The MAX636ACSA operates by comparing the power supply voltage with a user-defined threshold voltage. When the voltage falls below the threshold, the IC generates a reset signal. This signal remains active until the voltage rises above the threshold or the reset timeout period elapses.

Application Field Plans

The MAX636ACSA is commonly used in various electronic systems where reliable voltage monitoring is critical. Some application fields include:

1. Microcontrollers and microprocessors
2. Industrial control systems
3. Power management circuits
4. Battery-powered devices
5. Automotive electronics

Alternative Models

Here are some alternative models that offer similar functionality to the MAX636ACSA:

1. MAX638BCPA: Provides adjustable threshold voltage options and a wider operating temperature range.
2. MAX631BCPA: Offers fixed threshold voltage options and a smaller package size.
3. MAX635ACPA: Includes a manual reset input and a higher reset timeout period.

These alternative models can be considered based on specific requirements and preferences.

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