Texas Instruments

PCA9535DBQR

PCA9535DBQR Description

The PCA9535DBQR is a 16-bit I/O expander from Texas Instruments, designed to operate over I2C and SMBus interfaces. It features a clock frequency of 400 kHz, ensuring efficient communication with the host microcontroller. This device is surface-mountable and operates within a supply voltage range of 2.3V to 5.5V, making it suitable for a wide range of applications. With a current output capability of 10mA and 25mA, it can handle various load requirements. The PCA9535DBQR is also equipped with an interrupt output feature, enhancing its versatility in different applications.

PCA9535DBQR Features

• 16-bit I/O Expander: Offers 16 GPIO pins for expanding the I/O capabilities of a microcontroller.
• 400 kHz Clock Frequency: Supports high-speed data transfer over I2C and SMBus interfaces.
• 2.3V to 5.5V Supply Voltage: Operates over a wide voltage range, making it compatible with various power sources.
• 10mA/25mA Current Output: Capable of sourcing and sinking currents up to 10mA and 25mA, respectively.
• Interrupt Output: Provides an additional level of control and flexibility in system design.
• POR Feature: Incorporates a power-on reset feature for reliable startup and operation.
• REACH Unaffected & RoHS3 Compliant: Meets environmental standards for safe use in electronic devices.

PCA9535DBQR Applications

The PCA9535DBQR is ideal for applications where I/O expansion is required, such as:

• Industrial Control Systems: For expanding the number of digital inputs and outputs in automation and control systems.
• Consumer Electronics: In devices like smart home appliances, where multiple GPIOs are needed for user interface controls.
• Automotive Applications: For managing various electronic control units (ECUs) and sensors within a vehicle.
• Communication Systems: In network equipment where multiple digital signals need to be managed and controlled.

Conclusion of PCA9535DBQR

The PCA9535DBQR is a versatile I/O expander that offers high-speed communication, a wide voltage range, and robust current sourcing capabilities. Its unique features, such as the interrupt output and power-on reset, make it a valuable addition to any system requiring I/O expansion. With its compliance to environmental standards and wide range of applications, the PCA9535DBQR is a reliable choice for designers looking to enhance their system's capabilities.