MAX640ESA+T

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the voltage level of a power supply and generates a reset signal when the voltage falls below a certain threshold.
  • Provides a reliable way to ensure proper operation of electronic systems by preventing them from operating in an undervoltage condition.
  • Package: SOIC-8 (Small Outline Integrated Circuit), Surface Mount
  • Essence: Voltage monitoring and reset functionality in a compact package
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

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 or Fixed (140ms, 280ms, 560ms, 1120ms)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX640ESA+T has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | GND | Ground | | 2 | MR | Manual Reset Input | | 3 | VCC | Power Supply Input | | 4 | RESET | Reset Output | | 5 | TH | Threshold Voltage Selection | | 6 | CT | Capacitor Connection for Reset Timeout | | 7 | GND | Ground | | 8 | VCC | Power Supply Input |

Functional Features

• Monitors the voltage level of the power supply continuously.
• Generates a reset signal when the voltage falls below the selected threshold.
• Provides an adjustable or fixed reset timeout period to ensure proper system recovery.
• Allows manual reset through the MR pin.
• Low quiescent current consumption for power-sensitive applications.

Advantages

• Compact and easy-to-use integrated circuit package.
• Wide supply voltage range allows compatibility with various systems.
• Multiple threshold voltage options provide flexibility in voltage monitoring.
• Adjustable or fixed reset timeout period caters to different system requirements.
• Manual reset capability adds versatility to the circuit's functionality.
• Low power consumption enhances energy efficiency.

Disadvantages

• Limited to voltage monitoring and reset functionality, may not suit all application requirements.
• Requires external capacitors for reset timeout configuration.
• Operating temperature range may not be suitable for extreme environments.

Working Principles

The MAX640ESA+T operates by continuously monitoring the voltage level at the VCC pin. When the voltage falls below the selected threshold voltage (determined by the TH pin), the circuit generates a reset signal at the RESET pin. The reset signal remains active until the voltage rises above the threshold or a specified timeout period elapses. The timeout period can be adjusted using an external capacitor connected to the CT pin or set to a fixed value.

Detailed Application Field Plans

The MAX640ESA+T finds applications in various electronic systems where voltage monitoring and reset functionality are critical. Some potential application fields include: - Microcontrollers and microprocessors - Embedded systems - Power management circuits - Industrial control systems - Automotive electronics - Battery-powered devices

Detailed and Complete Alternative Models

• MAX6412UK16+T: Voltage Monitor and Reset Circuit with Fixed 1.6V Threshold and Adjustable Timeout Period
• MAX6389XS26D3+: Voltage Monitor and Reset Circuit with Fixed 2.6V Threshold and Fixed Timeout Period
• MAX6442KAEISD3+: Voltage Monitor and Reset Circuit with Adjustable Threshold and Fixed Timeout Period
• MAX6385LT26D3+: Voltage Monitor and Reset Circuit with Fixed 2.6V Threshold and Adjustable Timeout Period

(Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's documentation for a complete list of alternatives.)

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