PCA9674PW/S911,118

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9674PW/S911,118 is a versatile 16-bit I2C-bus I/O expander designed for general-purpose input/output expansion. It provides an easy and efficient way to increase the number of I/O pins available in a microcontroller-based system.

Characteristics: - 16 programmable GPIO pins - I2C-bus interface for communication with the microcontroller - Low power consumption - Wide operating voltage range - Small package size - RoHS compliant

Package: TSSOP24

Essence: The PCA9674PW/S911,118 is an essential component for expanding the I/O capabilities of microcontroller-based systems. It allows designers to add more peripheral devices or sensors without the need for additional microcontroller pins.

Packaging/Quantity: The PCA9674PW/S911,118 is typically sold in reels or tubes, containing a specific quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply Voltage: 2.3V to 5.5V
• I/O Voltage: 1.8V to 5.5V
• Maximum Output Current: 25mA per I/O pin
• Operating Temperature Range: -40°C to +85°C
• I2C-bus Frequency: Up to 400kHz

Detailed Pin Configuration

The PCA9674PW/S911,118 features a TSSOP24 package with the following pin configuration:

```

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| | | 1 12 | | 2 11 | | 3 10 | | 4 9 | | 5 8 | | 6 7 | |_______________| ```

Functional Features

• 16 programmable GPIO pins can be configured as inputs or outputs.
• Individual pins can be set to high, low, or input mode.
• Supports interrupt functionality for efficient event-driven systems.
• Internal pull-up resistors can be enabled for input pins.
• I2C-bus interface allows easy communication with the microcontroller.

Advantages and Disadvantages

Advantages: - Provides additional I/O pins without the need for extra microcontroller pins. - Easy integration into existing I2C-bus systems. - Low power consumption extends battery life in portable devices. - Wide operating voltage range allows compatibility with various microcontrollers. - Small package size saves board space.

Disadvantages: - Limited to 16 I/O pins, may not be sufficient for complex systems requiring a large number of peripherals. - Requires I2C-bus communication protocol knowledge for proper usage.

Working Principles

The PCA9674PW/S911,118 operates by communicating with the microcontroller through the I2C-bus interface. The microcontroller sends commands to configure the I/O pins as inputs or outputs and sets their logic levels. The PCA9674PW/S911,118 then responds accordingly, either reading the input states or driving the output pins to the desired logic levels.

Detailed Application Field Plans

The PCA9674PW/S911,118 finds applications in various fields, including but not limited to: - Home automation systems - Industrial control systems - Internet of Things (IoT) devices - Robotics - Automotive electronics

Detailed and Complete Alternative Models

• PCA9535PW,118
• MCP23017-E/SP
• MAX7313ATG+
• TCA9539PW,118
• PCF8574AP,112

These alternative models offer similar functionality and can be considered as substitutes for the PCA9674PW/S911,118 depending on specific requirements.

In conclusion, the PCA9674PW/S911,118 is a versatile I2C-bus I/O expander that provides additional GPIO pins for microcontroller-based systems. Its small package size, low power consumption, and wide operating voltage range make it suitable for various applications in different fields.