Texas Instruments

PCA9534DWR

PCA9534DWR Description

The PCA9534DWR is an I/O expander manufactured by Texas Instruments, designed to provide 8 channels of general-purpose I/O expansion for I2C and SMBus systems. This device operates with a clock frequency of 400 kHz, making it suitable for applications requiring high-speed data transfer. It features a wide supply voltage range of 2.3V to 5.5V, allowing for compatibility with various power sources. The PCA9534DWR is RoHS3 compliant, indicating its adherence to environmental regulations, and is REACH unaffected, ensuring compliance with European chemical regulations. It is also EAR99 classified, indicating that it is not subject to export controls.

PCA9534DWR Features

• 8-Channel I/O Expansion: Offers flexibility in expanding the number of I/O lines in a system.
• 400 kHz Clock Frequency: Supports high-speed data transfer for efficient operation.
• Wide Voltage Range: Compatible with a broad range of power sources, from 2.3V to 5.5V.
• I2C and SMBus Interface: Facilitates communication with microcontrollers and other devices using these protocols.
• 10mA/25mA Current Source/Sink: Capable of sourcing or sinking up to 25mA per channel, providing robust I/O capabilities.
• POR Feature: Includes a power-on reset feature for reliable system startup.
• Interrupt Output: Provides an interrupt signal for immediate response to changes in I/O status.
• Surface Mount: Designed for surface mount applications, suitable for PCB integration.
• Active Product Status: Indicates ongoing production and availability.

PCA9534DWR Applications

The PCA9534DWR is ideal for applications where I/O expansion is required, such as:

• Industrial Control Systems: For expanding input and output capabilities in automation and control applications.
• Consumer Electronics: In devices requiring additional buttons, switches, or sensors.
• Automotive Infotainment Systems: For managing various input devices and user interfaces.
• Smart Home Devices: To control and monitor various smart home components.

Conclusion of PCA9534DWR

The PCA9534DWR stands out for its versatility in I/O expansion, high-speed operation, and robust current sourcing/sinking capabilities. Its wide voltage range and compatibility with I2C and SMBus interfaces make it a valuable asset in various electronic systems. With its active product status and compliance with environmental regulations, the PCA9534DWR is a reliable choice for designers looking to expand their system's I/O capabilities.