Texas Instruments

PCF8574NE4

PCF8574NE4 Description

The PCF8574NE4 is an 8-bit I/O expander designed for I2C bus and SMBus applications. Manufactured by Texas Instruments, this interface IC chip offers a robust solution for expanding I/O capabilities in various electronic systems. It operates within a supply voltage range of 2.5V to 6V, making it versatile for different power requirements. The device supports a clock frequency of 100 kHz, ensuring reliable communication in I2C and SMBus environments.

The PCF8574NE4 features 8 I/O lines, each capable of sourcing or sinking up to 1mA and 25mA, respectively. This capability allows for efficient control and interfacing with various peripheral devices. The chip is housed in a through-hole package, making it suitable for applications requiring a robust mechanical connection. Additionally, it includes an interrupt output, enhancing its functionality in systems requiring real-time monitoring and control.

PCF8574NE4 Features

• 8-bit I/O Expansion: Provides 8 I/O lines, expanding the control capabilities of microcontrollers and other host devices.
• I2C and SMBus Compatibility: Supports both I2C and SMBus protocols, ensuring compatibility with a wide range of communication standards.
• Power Supply Range: Operates within a voltage range of 2.5V to 6V, offering flexibility in power supply requirements.
• Interrupt Output: Features an interrupt output for efficient real-time monitoring and control.
• Power-On Reset (POR): Ensures a reliable start-up state, preventing unintended operations during power-up.
• Through-Hole Mounting: Suitable for applications requiring a robust mechanical connection.
• Compliance: Meets REACH and RoHS3 compliance, ensuring environmental and safety standards are met.

PCF8574NE4 Applications

The PCF8574NE4 is ideal for a variety of applications where I/O expansion is required. Some specific use cases include:

• Embedded Systems: Enhancing the I/O capabilities of microcontrollers in embedded systems, allowing for additional peripherals and sensors.
• Industrial Automation: Controlling and monitoring various industrial processes, where robust and reliable I/O expansion is crucial.
• Consumer Electronics: Expanding the functionality of consumer devices by adding additional I/O ports for peripherals and sensors.
• Automotive Applications: Providing additional I/O for automotive systems, such as control panels and sensor interfaces.

Conclusion of PCF8574NE4

The PCF8574NE4 from Texas Instruments stands out as a versatile and reliable I/O expander for I2C and SMBus applications. Its wide operating voltage range, robust through-hole mounting, and interrupt output make it a suitable choice for a variety of applications. The inclusion of Power-On Reset (POR) ensures reliable operation, while compliance with REACH and RoHS3 standards highlights its commitment to environmental and safety standards. For engineers and designers looking to expand I/O capabilities in their systems, the PCF8574NE4 offers a comprehensive solution with significant advantages over similar models.