Texas Instruments

PCA9555DBQR

The PCA9555DBQR is a 16-bit I2C bus and SMBus 4-port I/O expander from Texas Instruments. It is designed to provide remote I/O expansion for a wide range of applications, including industrial control, automotive, and consumer electronics.

Description:

The PCA9555DBQR is a 16-bit I/O expander that features four independent ports, each with a separate I2C bus address. It provides a simple and cost-effective way to add remote I/O to a system, without the need for additional microcontrollers or other complex control logic. The device is available in a small 16-pin QFN package, making it suitable for space-constrained applications.

Features:

• 16-bit I/O expander with four independent ports
• I2C bus and SMBus compatible interface
• Independent I2C bus addresses for each port
• Programmable pull-up resistors for each I/O pin
• Glitch filtering and debounce support
• Wide operating voltage range (2.5V to 5.5V)
• Small 16-pin QFN package

Applications:

The PCA9555DBQR is suitable for a wide range of applications, including:

• Industrial control systems
• Automotive applications
• Consumer electronics
• Home automation systems
• Medical equipment
• Robotics
• Sensor interfaces
• LED control and lighting applications
  Overall, the PCA9555DBQR is a versatile and cost-effective solution for adding remote I/O to a wide range of systems. Its small form factor and compatibility with both I2C bus and SMBus make it an ideal choice for space-constrained applications.