PCF8574TS/3,112

Product Overview

Category

The PCF8574TS/3,112 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used as an I/O expander for microcontrollers in various electronic applications.

Characteristics

• The PCF8574TS/3,112 is a 16-pin IC with a built-in I2C interface.
• It operates at a voltage range of 2.5V to 6V.
• This IC provides 8-bit remote I/O expansion through the I2C bus.
• It offers high noise immunity and low power consumption.
• The PCF8574TS/3,112 is compatible with both 3.3V and 5V microcontrollers.

Package

The PCF8574TS/3,112 is available in a small outline package (SOT96-1) with a thermal pad for efficient heat dissipation.

Essence

The essence of this product lies in its ability to expand the input/output capabilities of microcontrollers using the I2C communication protocol.

Packaging/Quantity

The PCF8574TS/3,112 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage: 2.5V to 6V
• Input/Output Voltage: 0V to VDD
• Maximum Output Current: 25mA per channel
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Frequency: Up to 400kHz

Detailed Pin Configuration

The PCF8574TS/3,112 has a total of 16 pins, which are assigned specific functions as follows:

1. SDA: Serial Data Line
2. SCL: Serial Clock Line
3. A0: Address Bit 0
4. A1: Address Bit 1
5. A2: Address Bit 2
6. P0: I/O Port 0
7. P1: I/O Port 1
8. P2: I/O Port 2
9. P3: I/O Port 3
10. P4: I/O Port 4
11. P5: I/O Port 5
12. P6: I/O Port 6
13. P7: I/O Port 7
14. GND: Ground
15. VDD: Supply Voltage
16. NC: No Connection

Functional Features

• Bidirectional I/O Expansion: The PCF8574TS/3,112 provides 8-bit I/O expansion, allowing microcontrollers to control and read external devices.
• I2C Interface: It utilizes the I2C bus protocol for communication with the microcontroller, enabling easy integration into existing systems.
• Low Power Consumption: This IC is designed to consume minimal power, making it suitable for battery-powered applications.
• High Noise Immunity: The PCF8574TS/3,112 offers excellent noise immunity, ensuring reliable data transmission in noisy environments.

Advantages and Disadvantages

Advantages

• Simplifies I/O Expansion: The PCF8574TS/3,112 simplifies the process of expanding the I/O capabilities of microcontrollers, reducing development time and effort.
• Versatile Compatibility: It can be used with both 3.3V and 5V microcontrollers, providing flexibility in system design.
• Cost-Effective Solution: This IC offers a cost-effective solution for adding additional I/O ports to microcontroller-based projects.

Disadvantages

• Limited I/O Channels: The PCF8574TS/3,112 provides only 8 I/O channels, which may be insufficient for applications requiring a large number of I/O ports.
• Speed Limitation: The I2C bus communication protocol used by this IC has a maximum frequency of 400kHz, which may limit the data transfer speed in certain applications.

Working Principles

The PCF8574TS/3,112 operates by receiving commands from the microcontroller through the I2C bus. It can function as either an input or output device, depending on the configuration set by the microcontroller. When configured as an output, it can drive external devices connected to its I/O ports. When configured as an input, it can read the status of external devices and send the information back to the microcontroller.

Detailed Application Field Plans

The PCF8574TS/3,112 finds applications in various fields, including but not limited to:

1. Home Automation: It can be used to control and monitor various home appliances and sensors.
2. Industrial Automation: This IC is suitable for expanding I/O capabilities in industrial control systems.
3. Robotics: It can be utilized to interface with sensors and actuators in robotic systems.