PCA9533D/02,112

Product Overview

• Category: Integrated Circuit (IC)
• Use: GPIO Expander
• Characteristics:
  • 16-bit I2C-bus and SMBus I/O expander
  • Low standby current consumption of 1 µA
  • Schmitt trigger inputs for noise suppression
  • Open-drain interrupt output
  • 5 V tolerant I/Os
• Package: SO8 (Small Outline 8-pin package)
• Essence: The PCA9533D/02,112 is a versatile GPIO expander IC that provides additional input/output pins to microcontrollers or other devices via the I2C-bus or SMBus interface.
• Packaging/Quantity: The PCA9533D/02,112 is available in a reel packaging with 2500 units per reel.

Specifications

• Supply Voltage: 2.3 V to 5.5 V
• I/O Voltage: 0 V to VDD
• Operating Temperature Range: -40°C to +85°C
• I2C-bus Frequency: Up to 400 kHz
• Number of I/O Pins: 16
• Interrupt Output: Open-drain
• Standby Current: 1 µA (typical)

Pin Configuration

The PCA9533D/02,112 has an 8-pin Small Outline (SO8) package. The pin configuration is as follows:

____ NC | | VDD SDA | | INT SCL | | A2 GND | | A1 NC |____| A0

Functional Features

• 16 programmable I/O pins
• I2C-bus/SMBus interface for communication
• Schmitt trigger inputs for noise suppression
• Open-drain interrupt output pin
• 5 V tolerant I/Os

Advantages and Disadvantages

Advantages: - Provides additional I/O pins to microcontrollers - Low standby current consumption - Noise suppression with Schmitt trigger inputs - Compatible with both I2C-bus and SMBus interfaces - 5 V tolerant I/Os allow interfacing with different voltage levels

Disadvantages: - Limited number of I/O pins (16 in total) - Requires I2C-bus or SMBus interface support from the host device

Working Principles

The PCA9533D/02,112 operates as a GPIO expander by communicating with a microcontroller or other devices through the I2C-bus or SMBus interface. It provides 16 programmable I/O pins that can be configured as either inputs or outputs. The device uses Schmitt trigger inputs to suppress noise and ensure reliable signal detection. It also features an open-drain interrupt output pin that can be used to notify the host device about specific events.

Application Field Plans

The PCA9533D/02,112 finds applications in various fields where additional I/O pins are required. Some potential application areas include:

1. Industrial automation systems
2. Home automation and smart devices
3. Automotive electronics
4. Internet of Things (IoT) devices
5. Robotics and control systems

Alternative Models

Here are some alternative models that offer similar functionality to the PCA9533D/02,112:

1. MCP23017 - 16-Bit I/O Expander with I2C Interface
2. PCF8574 - Remote 8-bit I/O expander for I2C-bus
3. MAX7313 - 16-Port I/O Expander with Serial Interface

These alternative models can be considered based on specific requirements and compatibility with the host system.

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