Texas Instruments

PCA9536DG4

PCA9536DG4 Description

The PCA9536DG4 is a 4-channel I/O expander designed for I2C and SMBus applications, manufactured by Texas Instruments. This device is ideal for expanding the number of available I/O lines in embedded systems and microcontroller applications. With a clock frequency of 400 kHz, it ensures efficient and reliable communication over the I2C and SMBus interfaces. The PCA9536DG4 operates within a supply voltage range of 2.3V to 5.5V, making it compatible with a wide range of power supply configurations.

The PCA9536DG4 features a surface-mount package, specifically in an 8SOIC format, which is housed in a tube for easy handling and integration into various electronic designs. It supports a maximum output source current of 10mA and a maximum output sink current of 25mA, providing robust performance for driving various loads. The device also includes a Power-On Reset (POR) feature, ensuring a reliable startup state and enhancing system stability.

PCA9536DG4 Features

• Interface Compatibility: The PCA9536DG4 supports both I2C and SMBus protocols, making it versatile for a variety of applications requiring different communication standards.
• Power-On Reset (POR): This feature ensures that the device starts in a known state, which is crucial for reliable system operation, especially in environments where power cycling is common.
• Wide Operating Voltage Range: With a supply voltage range of 2.3V to 5.5V, the PCA9536DG4 is compatible with a broad spectrum of power supply voltages, enhancing its flexibility in different system designs.
• Surface-Mount Technology (SMT): The surface-mount package type facilitates easy integration into compact and high-density PCB designs, which is essential for modern electronics where space is often a constraint.
• Output Current Capability: The device can source up to 10mA and sink up to 25mA, providing sufficient current for driving various types of loads, including LEDs and small relays.
• Moisture Sensitivity Level (MSL) 1: This indicates that the component is not moisture-sensitive, allowing for unlimited storage time without requiring special handling or packaging, which simplifies inventory management.

PCA9536DG4 Applications

The PCA9536DG4 is well-suited for applications that require expanding the number of I/O lines in embedded systems, such as microcontrollers and other digital systems. Its compatibility with I2C and SMBus protocols makes it ideal for use in:

• Embedded Systems: Expanding the I/O capabilities of microcontrollers in various embedded applications, such as industrial control systems, smart meters, and IoT devices.
• Consumer Electronics: Enhancing the functionality of consumer devices by providing additional I/O lines for peripherals and sensors.
• Automotive Applications: Utilizing the PCA9536DG4 in automotive systems for controlling various electronic components and interfacing with different sensors.
• Industrial Automation: Implementing the device in industrial automation systems for controlling actuators, relays, and other devices that require digital I/O expansion.

Conclusion of PCA9536DG4

The PCA9536DG4, manufactured by Texas Instruments, is a versatile I/O expander that offers significant benefits in terms of flexibility, reliability, and compatibility. Its support for both I2C and SMBus protocols, combined with a wide operating voltage range and robust output current capabilities, makes it an excellent choice for a wide range of applications. The inclusion of a Power-On Reset feature further enhances its reliability, ensuring stable operation in various environments. Despite being marked as obsolete, the PCA9536DG4 remains a valuable component for designers looking to expand I/O capabilities in their systems.