PCA9674N,112

Product Overview

Category

PCA9674N,112 belongs to the category of integrated circuits (ICs).

Use

The PCA9674N,112 is commonly used as an I/O expander in various electronic devices and systems.

Characteristics

• The IC provides 8-bit parallel input/output (I/O) ports.
• It operates at a voltage range of 2.3V to 5.5V.
• The PCA9674N,112 supports both push-pull and open-drain output configurations.
• It features a low standby current consumption, making it suitable for battery-powered applications.
• The IC has built-in ESD protection, ensuring robustness against electrostatic discharges.

Package

PCA9674N,112 is available in a small outline package (SOP) with 16 pins.

Essence

The essence of PCA9674N,112 lies in its ability to expand the number of I/O ports in a system, enabling efficient interfacing with other components.

Packaging/Quantity

The PCA9674N,112 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage: 2.3V to 5.5V
• Number of I/O Ports: 8
• Output Configuration: Push-Pull or Open-Drain
• Standby Current: 1 μA (typical)
• ESD Protection: ±2 kV (Human Body Model)

Detailed Pin Configuration

The PCA9674N,112 has a total of 16 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 Bit 0
4. A1 - Address Bit 1
5. A2 - Address Bit 2
6. RESET - Reset Input
7. INT - Interrupt Output
8. VDD - Supply Voltage
9. GND - Ground
10. P0 - I/O Port 0
11. P1 - I/O Port 1
12. P2 - I/O Port 2
13. P3 - I/O Port 3
14. P4 - I/O Port 4
15. P5 - I/O Port 5
16. P6 - I/O Port 6

Functional Features

• The PCA9674N,112 supports both input and output modes for each I/O port.
• It can be controlled via a serial interface, allowing easy integration with microcontrollers or other devices.
• The IC provides interrupt functionality, enabling efficient event-driven operations.
• It offers software-configurable I/O pull-up resistors.

Advantages and Disadvantages

Advantages

• Compact size and low power consumption make it suitable for portable devices.
• Wide supply voltage range allows compatibility with various systems.
• Built-in ESD protection enhances reliability.
• Flexible configuration options provide versatility in different applications.

Disadvantages

• Limited number of I/O ports may restrict usage in complex systems requiring a higher number of connections.
• Lack of built-in features for specific applications may require additional external components.

Working Principles

The PCA9674N,112 operates based on the I2C (Inter-Integrated Circuit) protocol. It communicates with the master device (e.g., microcontroller) through the SDA and SCL lines. The master device sends commands and data to control the I/O ports or read their status. The IC responds accordingly, either by changing the state of the ports or providing the requested information.

Detailed Application Field Plans

The PCA9674N,112 finds applications in various fields, including but not limited to:

1. Consumer Electronics: Used for expanding I/O capabilities in smart home devices, remote controls, and wearable gadgets.
2. Industrial Automation: Enables efficient interfacing with sensors, actuators, and control systems in industrial machinery.
3. Automotive Electronics: Facilitates I/O expansion in automotive modules, such as infotainment systems and lighting controls.
4. Internet of Things (IoT): Integrates with IoT devices to enhance connectivity and control options.
5. Medical Devices: Provides additional I/O ports for medical equipment, allowing for enhanced functionality and connectivity.

Detailed and Complete Alternative Models

• PCA9670: Similar I/O expander IC with 4-bit parallel I/O ports.
• PCA9538: I/O expander IC with 8-bit parallel I/O ports and interrupt functionality.
• MCP23017: I/O expander IC with 16-bit parallel I/O ports and I2C interface.

These alternative models offer similar functionalities and can be considered based on specific requirements and system constraints.

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