PCA9675BQ,118

Product Overview

Category

The PCA9675BQ,118 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for controlling and expanding the number of input/output (I/O) ports in electronic devices.

Characteristics

• The PCA9675BQ,118 is a 16-bit I/O expander with an I2C-bus interface.
• It operates at a voltage range of 2.3V to 5.5V, making it suitable for various applications.
• This IC offers high-speed I2C communication, allowing for efficient data transfer.
• It has built-in ESD protection, ensuring reliability and durability.

Package

The PCA9675BQ,118 is available in a small outline package (SOIC) with 24 pins.

Essence

The essence of this product lies in its ability to provide additional I/O ports, enabling greater flexibility and functionality in electronic systems.

Packaging/Quantity

The PCA9675BQ,118 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Number of I/O ports: 16
• Supply voltage range: 2.3V to 5.5V
• I2C-bus interface compatibility: Standard-mode, Fast-mode, Fast-mode Plus
• Operating temperature range: -40°C to +85°C
• Maximum clock frequency: 400 kHz

Detailed Pin Configuration

The PCA9675BQ,118 features 24 pins, each serving a specific function. The pin configuration is as follows:

1. SDA - Serial Data Input/Output
2. SCL - Serial Clock Input
3. A0 - Address Input Bit 0
4. A1 - Address Input Bit 1
5. A2 - Address Input Bit 2
6. RESET - Reset Input 7-20. P0-P13 - General Purpose I/O Pins
7. INT - Interrupt Output
8. VDD - Supply Voltage
9. GND - Ground
10. NC - No Connection

Functional Features

• I2C-bus interface allows for easy integration with microcontrollers and other devices.
• Individual programmable I/O pins can be configured as inputs or outputs.
• Configurable interrupt output provides efficient event notification.
• Software-controlled reset function enables system initialization.
• Low standby current consumption enhances power efficiency.

Advantages and Disadvantages

Advantages

• Compact size and high integration save board space.
• Wide supply voltage range accommodates various applications.
• ESD protection ensures robustness and reliability.
• Flexible I/O configuration enhances system versatility.

Disadvantages

• Limited number of I/O ports may restrict certain complex applications.
• Lack of advanced features compared to more specialized ICs.

Working Principles

The PCA9675BQ,118 operates by receiving commands and data through the I2C-bus interface. It interprets these instructions to control the state (input or output) of each I/O pin. The device communicates with the microcontroller or host system, enabling seamless integration and expansion of I/O capabilities.

Detailed Application Field Plans

The PCA9675BQ,118 finds application in various fields, including but not limited to:

1. Home automation systems: Controlling lights, sensors, and actuators.
2. Industrial automation: Expanding I/O capacity in PLCs and industrial control systems.
3. Automotive electronics: Enhancing functionality in vehicle control modules.
4. Consumer electronics: Enabling flexible I/O configurations in smart devices.
5. Internet of Things (IoT): Integrating with IoT platforms for sensor data acquisition.

Detailed and Complete Alternative Models

1. PCA9535PW,118: 16-bit I/O expander with similar features and package.
2. MCP23017-E/SP: I2C-bus I/O expander with 16 I/O ports and extended temperature range.
3. MAX7313ATG+: 16-bit I/O expander with serial interface and higher maximum clock frequency.

These alternative models offer similar functionality and can be considered as substitutes for the PCA9675BQ,118 in various applications.

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