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MAX6819UT+T

MAX6819UT+T

Product Overview

  • Category: Integrated Circuit
  • Use: Digital Input/Output Expander
  • Characteristics: Low-voltage, I²C-Compatible, 8-Bit GPIO Expander
  • Package: SOT23-6
  • Essence: Expand the number of general-purpose input/output (GPIO) pins in a microcontroller
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Supply Voltage Range: 1.7V to 5.5V
  • Number of GPIO Pins: 8
  • I²C Bus Compatibility: Standard-mode (100kHz) and Fast-mode (400kHz)
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX6819UT+T has a total of six pins arranged as follows:

```


| | --| VDD GND |-- Pin 1: Power Supply --| SDA SCL |-- Pin 2: I²C Bus Interface --| P0 P1 |-- Pins 3 and 4: General-Purpose Input/Output (GPIO) Pins --| P2 P3 |-- Pins 5 and 6: General-Purpose Input/Output (GPIO) Pins |___________| ```

Functional Features

  • Provides additional GPIO pins for microcontrollers with limited I/O capabilities
  • Supports bidirectional I/O on all pins
  • Can be used as either inputs or outputs individually
  • Configurable interrupt output pin for efficient event-driven systems
  • Low standby current consumption for power-sensitive applications

Advantages and Disadvantages

Advantages: - Compact SOT23-6 package allows for space-efficient designs - Wide supply voltage range enables compatibility with various microcontrollers - I²C bus compatibility simplifies interfacing with other devices - Configurable interrupt output enhances system responsiveness

Disadvantages: - Limited number of GPIO pins (8) may not be sufficient for complex applications - SOT23-6 package may require additional PCB space compared to smaller packages

Working Principles

The MAX6819UT+T is an I²C-compatible digital input/output expander. It communicates with a microcontroller through the I²C bus, expanding the available GPIO pins. The microcontroller can control the direction (input or output) and logic level of each pin individually. The device also features a configurable interrupt output that can be used to notify the microcontroller of specific events.

Detailed Application Field Plans

The MAX6819UT+T finds application in various fields where additional GPIO pins are required. Some potential use cases include:

  1. Home Automation: Controlling multiple sensors and actuators in a smart home system.
  2. Industrial Control Systems: Expanding the I/O capabilities of programmable logic controllers (PLCs).
  3. Internet of Things (IoT): Enabling connectivity and control of numerous IoT devices.
  4. Robotics: Providing additional I/O for controlling motors, sensors, and other peripherals.
  5. Automotive Electronics: Supporting various functions such as lighting control and sensor interfacing.

Detailed and Complete Alternative Models

  1. MCP23017: 16-Bit I/O Expander with I²C Interface
  2. PCF8574: 8-Bit Remote I/O Expander for I²C-bus
  3. SN74HC595: 8-Bit Shift Register with Serial Input/Parallel Output

These alternative models offer similar functionality to the MAX6819UT+T and can be considered based on specific project requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af MAX6819UT+T i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of MAX6819UT+T in technical solutions:

1. What is the MAX6819UT+T? The MAX6819UT+T is a low-voltage, 8-channel input/output (I/O) port expander with integrated debounce circuitry.

2. What is the purpose of the MAX6819UT+T? The MAX6819UT+T is used to expand the number of I/O pins available on a microcontroller or other digital device.

3. What is the maximum voltage that can be applied to the MAX6819UT+T? The MAX6819UT+T operates at a maximum voltage of 5.5V.

4. How many I/O pins does the MAX6819UT+T provide? The MAX6819UT+T provides 8 I/O pins.

5. Can the MAX6819UT+T be used with both digital inputs and outputs? Yes, the MAX6819UT+T can be used for both digital inputs and outputs.

6. Does the MAX6819UT+T have built-in debounce circuitry? Yes, the MAX6819UT+T has integrated debounce circuitry to eliminate contact bounce in mechanical switches.

7. What is the maximum current that can be sourced or sunk by each I/O pin? Each I/O pin of the MAX6819UT+T can source or sink up to 25mA.

8. Can the MAX6819UT+T be cascaded to increase the number of I/O pins? Yes, multiple MAX6819UT+T devices can be cascaded together to expand the number of I/O pins.

9. Is the MAX6819UT+T compatible with different microcontrollers? Yes, the MAX6819UT+T is compatible with a wide range of microcontrollers and digital devices.

10. Are there any application examples for the MAX6819UT+T? Yes, some common applications include keypad scanning, LED control, switch debouncing, and general-purpose I/O expansion.

Please note that these questions and answers are based on general information about the MAX6819UT+T. For specific technical details and implementation guidelines, it is recommended to refer to the datasheet and application notes provided by the manufacturer.