The PCA9535DBR is a robust, high-performance 16-bit I²C-bus and SMBus I/O expander from Texas Instruments. Designed with versatility in mind, this device provides an ideal solution for expanding the available I/O ports on microcontrollers and microprocessors in a wide range of applications, particularly where board space is at a premium.

Key Features

• Operating power supply voltage range of 2.3V to 5.5V, allowing for flexible integration into various system designs.
• 400 kHz I²C bus interface that is compatible with the I²C-bus Fast-mode and SMBus standards, enabling quick communication with a host controller.
• Offers 16 individual I/O pins that can be configured as either inputs or outputs, providing a scalable solution for systems requiring additional I/O capabilities.
• Each I/O pin can be accessed through a set of input, output, and polarity inversion registers, allowing for sophisticated control and customization of the I/O behavior.
• Features an active-low interrupt output which can be connected to the interrupt logic of the host controller, signaling when an input state has changed.
• Includes built-in power-on reset, which ensures that the I/O expander starts in a known state, simplifying system initialization.
• Comes in a small SSOP-24 package, making it suitable for space-constrained applications.

Applications

The PCA9535DBR is highly suited for a variety of applications, including but not limited to:

• Servers
• Personal electronics
• Industrial controls
• Automotive systems
• Medical equipment

Quality and Reliability

Texas Instruments is known for its commitment to quality and reliability, and the PCA9535DBR is no exception. It is designed to meet the rigorous demands of the industry, ensuring stable operation across a wide temperature range and a long operational lifespan.