PCA9674AN,112

Product Overview

Category

PCA9674AN,112 belongs to the category of integrated circuits (ICs).

Use

The PCA9674AN,112 is commonly used as an I/O expander for microcontroller-based systems.

Characteristics

• The IC provides 8-bit parallel input/output (I/O) expansion.
• It operates at a voltage range of 2.3V to 5.5V.
• The PCA9674AN,112 has a maximum frequency of 400 kHz.
• It features an open-drain interrupt output.
• This IC is compatible with both 3.3V and 5V logic levels.

Package

The PCA9674AN,112 is available in a small outline package (SOT96-1), also known as SO-14.

Essence

The essence of PCA9674AN,112 lies in its ability to expand the number of I/O pins available for microcontrollers, allowing for greater flexibility in system design.

Packaging/Quantity

The PCA9674AN,112 is typically sold in reels or tubes, with each reel containing 2500 units.

Specifications

• Supply Voltage: 2.3V to 5.5V
• Maximum Frequency: 400 kHz
• Number of I/O Pins: 8
• Logic Compatibility: 3.3V and 5V
• Interrupt Output: Open-drain

Detailed Pin Configuration

The PCA9674AN,112 has a total of 14 pins. 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. INT - Interrupt Output
8. GND - Ground
9. P0-P7 - Parallel I/O Pins
10. VDD - Supply Voltage

Functional Features

• The PCA9674AN,112 provides a simple and efficient way to expand the number of I/O pins in microcontroller-based systems.
• It supports both input and output modes for each I/O pin.
• The IC can be easily controlled using a two-wire I2C-bus interface.
• It offers individual software programmable pull-up resistors for each I/O pin.

Advantages and Disadvantages

Advantages

• Allows for increased flexibility in system design by expanding the number of available I/O pins.
• Compatible with both 3.3V and 5V logic levels.
• Offers individual programmable pull-up resistors for each I/O pin.

Disadvantages

• Limited to 8-bit parallel I/O expansion.
• Requires additional programming and configuration compared to standard microcontroller I/O pins.

Working Principles

The PCA9674AN,112 operates based on the I2C-bus protocol. It communicates with the microcontroller through the SDA (Serial Data) and SCL (Serial Clock) lines. The microcontroller sends commands and data to the PCA9674AN,112, which then controls the state (input or output) of its I/O pins accordingly.

Detailed Application Field Plans

The PCA9674AN,112 finds applications in various fields, including but not limited to: - Industrial automation - Home automation - Robotics - Internet of Things (IoT) devices - Sensor interfacing - LED control systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the PCA9674AN,112 are: - MCP23008 - PCF8574 - MAX7311 - SX1509 - TCA9535

These alternative models provide I/O expansion capabilities and can be considered as substitutes for the PCA9674AN,112 depending on specific requirements.

In conclusion, the PCA9674AN,112 is an integrated circuit that serves as an I/O expander for microcontroller-based systems. It offers 8-bit parallel I/O expansion, compatibility with multiple logic levels, and programmable pull-up resistors. While it has certain limitations, it provides increased flexibility in system design and finds applications in various fields such as industrial automation, home automation, and robotics. Alternative models like MCP23008, PCF8574, MAX7311, SX1509, and TCA9535 offer similar functionality and can be used as alternatives to the PCA9674AN,112.