Texas Instruments

PCA9535DB

PCA9535DB Description

The PCA9535DB is a 16-bit I/O expander designed by Texas Instruments, featuring a 400 kHz I2C and SMBus interface. This surface-mount device is housed in a 24-lead SSOP package and operates within a supply voltage range of 2.3V to 5.5V. It supports a maximum output source current of 10mA and a maximum output sink current of 25mA. The PCA9535DB includes an interrupt output and a power-on reset (POR) feature, ensuring reliable operation and ease of integration into various electronic systems. The device is REACH unaffected and RoHS3 compliant, making it suitable for environmentally conscious applications. With a moisture sensitivity level (MSL) of 1, the PCA9535DB is highly reliable and suitable for a wide range of operating conditions.

PCA9535DB Features

• 16-bit I/O Expansion: Provides 16 programmable I/O lines, allowing for efficient control and monitoring of multiple devices.
• 400 kHz I2C and SMBus Interface: Ensures high-speed communication and compatibility with a wide range of microcontrollers and systems.
• Power-On Reset (POR): Ensures a reliable start-up state, reducing the risk of system faults and improving overall reliability.
• Interrupt Output: Facilitates efficient communication by signaling when an event occurs, reducing the need for continuous polling.
• Wide Operating Voltage Range: 2.3V to 5.5V supply voltage range ensures compatibility with various power supply configurations.
• High Current Capability: Supports up to 10mA source current and 25mA sink current, making it suitable for driving a variety of loads.
• Surface Mount Packaging: The 24-lead SSOP package is ideal for compact and high-density designs.
• Environmental Compliance: REACH unaffected and RoHS3 compliant, ensuring environmental safety and regulatory compliance.
• Moisture Sensitivity Level 1: Provides unlimited storage and handling flexibility, reducing the risk of moisture-related damage.

PCA9535DB Applications

The PCA9535DB is ideal for applications requiring efficient I/O expansion and reliable communication. Some specific use cases include:

• Embedded Systems: Ideal for expanding the I/O capabilities of microcontrollers in embedded systems, enabling the control and monitoring of multiple peripherals.
• Industrial Automation: Suitable for controlling and monitoring sensors, actuators, and other devices in industrial environments.
• Consumer Electronics: Enhances the functionality of consumer devices by providing additional I/O lines for various applications, such as remote controls and home automation systems.
• Medical Devices: Provides reliable I/O expansion for medical equipment, ensuring accurate control and monitoring of critical functions.
• Automotive Applications: Enhances the I/O capabilities of automotive electronic systems, supporting the control and monitoring of various vehicle components.

Conclusion of PCA9535DB

The PCA9535DB from Texas Instruments is a highly versatile and reliable 16-bit I/O expander, offering a wide range of features and benefits. Its high-speed I2C and SMBus interface, combined with power-on reset and interrupt output capabilities, make it an excellent choice for a variety of applications. The device's wide operating voltage range, high current capability, and surface-mount packaging further enhance its suitability for compact and high-density designs. With its environmental compliance and moisture sensitivity level 1 rating, the PCA9535DB ensures long-term reliability and ease of integration into various electronic systems.