Product Overview: PCA9534DB

The PCA9534DB from Texas Instruments is a remote 8-bit I/O expander for I²C-bus/SMBus applications. It is designed to provide general-purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I²C). This integrated circuit (IC) is an ideal solution for applications where additional I/Os are needed and helps to overcome the limitations of the number of I/Os available in a microcontroller or processor.

Key Features

• Operating Power Supply Voltage Range: 2.3 V to 5.5 V, making it suitable for a wide range of applications, including battery-powered devices.
• I²C to Parallel Port Expander: Adds more I/O ports to your system, which can be particularly useful for button inputs, LED drivers, or other general-purpose I/O extensions.
• Eight I/O Pins: Each can be configured as an input or output, allowing for a flexible interface with peripherals.
• Interrupt Output: Provides an interrupt signal to the host controller when input state changes, improving the efficiency of the system by eliminating the need for the processor to poll the expander.
• Low Standby Current: Ideal for power-sensitive applications due to its efficient power management.
• Polarity Inversion Register: Allows for easy inversion of the polarity of the I/O pins, simplifying the design of input interfaces.
• Active-Low Reset Input: Enables the device to be reset remotely.

Applications

The PCA9534DB is versatile and can be used in a variety of applications, including:

• Servers
• Personal Electronics
• Industrial Control
• Home Automation
• Medical Equipment

Package and Quality

Packaged in a space-saving SSOP-16, the PCA9534DB is designed to meet the requirements of space-constrained applications. Texas Instruments ensures high-quality standards, and this product is compliant with the RoHS Directive, making it suitable for use in environmentally sensitive applications.