PCA9533DP/02,118

Product Overview

Category

PCA9533DP/02,118 belongs to the category of integrated circuits (ICs).

Use

It is commonly used for controlling and expanding the input/output (I/O) capabilities of microcontrollers or other digital devices.

Characteristics

• Low-voltage bidirectional I/O expander
• 4-bit I2C-bus and SMBus I/O port with interrupt
• Active LOW interrupt output
• Internal power-on reset
• Noise filter on SCL/SDA inputs
• No glitch on power-up
• Supports hot insertion
• Low standby current consumption

Package

PCA9533DP/02,118 is available in a small outline package (SOT353) which ensures easy integration into various electronic systems.

Essence

The essence of PCA9533DP/02,118 lies in its ability to provide additional I/O ports for digital devices, enabling efficient control and expansion of their functionalities.

Packaging/Quantity

This product is typically packaged in reels, containing a specified quantity of PCA9533DP/02,118 ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Supply voltage: 1.65V to 5.5V
• Operating temperature range: -40°C to +85°C
• I2C-bus frequency: Up to 400 kHz
• Number of I/O pins: 4
• Interrupt output: Active LOW
• Standby current: 1 μA (typical)

Detailed Pin Configuration

The PCA9533DP/02,118 IC has a total of 8 pins, each serving a specific function:

1. SDA: Serial data input/output pin for I2C communication.
2. SCL: Serial clock input pin for I2C communication.
3. INT: Interrupt output pin.
4. GND: Ground reference for the IC.
5. P0-P3: Bidirectional I/O pins.
6. VDD: Supply voltage input pin.

Functional Features

• Bidirectional I/O expansion: PCA9533DP/02,118 provides 4 additional I/O pins, allowing for increased connectivity and control options.
• I2C-bus compatibility: It supports communication via the widely-used I2C-bus interface, enabling seamless integration with various microcontrollers and digital devices.
• Interrupt capability: The active LOW interrupt output pin allows for efficient event-driven programming and reduces the need for continuous polling of I/O status.
• Power management: The IC features a low standby current consumption, making it suitable for power-sensitive applications.

Advantages and Disadvantages

Advantages

• Compact size and easy integration into electronic systems.
• Wide supply voltage range allows for flexibility in different applications.
• Noise filter on SCL/SDA inputs ensures reliable communication in noisy environments.
• Hot insertion support simplifies system maintenance and upgrades.

Disadvantages

• Limited number of I/O pins may not be sufficient for complex applications requiring extensive connectivity.
• Lack of advanced features such as built-in pull-up resistors or configurable I/O modes.

Working Principles

PCA9533DP/02,118 operates based on the I2C-bus protocol. It communicates with the microcontroller or host device through the SDA and SCL lines, enabling bidirectional data transfer. The IC can be configured to function as either an input or output port for each individual I/O pin. It monitors the status of the connected devices and generates interrupts when specific events occur, providing efficient event-driven functionality.

Detailed Application Field Plans

The PCA9533DP/02,118 IC finds applications in various fields, including but not limited to:

1. Home automation: Controlling and monitoring devices such as lights, sensors, and actuators.
2. Industrial automation: Expanding I/O capabilities of programmable logic controllers (PLCs) or industrial control systems.
3. Internet of Things (IoT): Enabling connectivity and control of IoT devices through a microcontroller.
4. Consumer electronics: Adding extra I/O ports to enhance the functionality of electronic gadgets.

Detailed and Complete Alternative Models

1. PCA9533D,118: Similar to PCA9533DP/02,118 but available in a different package (SO8).
2. PCA9534PW,112: 8-bit I2C-bus and SMBus I/O expander with similar features and pin configuration.
3. MCP23017-E/SO: Another popular I2C-bus I/O expander with 16 I/O pins and additional features like interrupt capture and configurable pull-up resistors.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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