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PCA9535CD,118

PCA9535CD,118 Description

The PCA9535CD,118 is a 16-bit I/O expander designed by NXP Semiconductors, featuring an I2C and SMBus interface. This device is ideal for expanding the number of available I/O lines in embedded systems and microcontroller applications. It operates within a supply voltage range of 2.3V to 5.5V and supports a clock frequency of 400 kHz, making it suitable for a variety of low to medium-speed applications. The PCA9535CD,118 is packaged in a surface-mount 24SO package, which is ideal for compact and space-constrained designs. Despite its obsolete status, it remains a robust solution for applications requiring reliable I/O expansion.

PCA9535CD,118 Features

• 16-bit I/O Expansion: The PCA9535CD,118 provides 16 programmable I/O lines, offering significant expansion capabilities for microcontroller-based systems.
• I2C and SMBus Interface: This dual-interface support allows for seamless integration into systems that utilize either communication protocol, enhancing flexibility and compatibility.
• Power-On Reset (POR): The built-in POR feature ensures reliable initialization of the device upon power-up, reducing the risk of erratic behavior and simplifying system design.
• Interrupt Output: The device includes an interrupt output, enabling efficient communication with the host controller and reducing the need for continuous polling.
• Wide Operating Voltage Range: With a supply voltage range of 2.3V to 5.5V, the PCA9535CD,118 is versatile and can be used in a variety of power environments.
• Output Current Capability: The device supports output source and sink currents of 10mA and 25mA, respectively, providing robust drive capabilities for connected peripherals.
• Surface-Mount Packaging: The 24SO package is suitable for surface-mount assembly, facilitating compact and reliable PCB designs.
• Compliance and Safety: The PCA9535CD,118 is RoHS3 compliant and REACH unaffected, ensuring it meets environmental and safety standards for electronics manufacturing.

PCA9535CD,118 Applications

The PCA9535CD,118 is well-suited for a range of applications where I/O expansion is necessary. Some specific use cases include:

• Embedded Systems: Expanding the I/O capabilities of microcontrollers in embedded systems, such as IoT devices, industrial controllers, and smart sensors.
• Consumer Electronics: Enhancing the functionality of consumer devices by providing additional I/O lines for peripherals like LEDs, buttons, and switches.
• Automotive Electronics: Utilizing the device in automotive applications for controlling and interfacing with various electronic components.
• Industrial Automation: Implementing the PCA9535CD,118 in industrial automation systems to manage and control multiple I/O lines efficiently.
• Medical Devices: Providing reliable I expansion/O in medical equipment, ensuring precise control and monitoring of critical functions.

Conclusion of PCA9535CD,118

The PCA9535CD,118 is a versatile and reliable I/O expander that offers significant expansion capabilities with its 16-bit I/O lines and dual I2C/SMBus interface. Despite being marked as obsolete, its wide operating voltage range, power-on reset feature, and interrupt output make it a robust choice for various applications. The surface-mount packaging and compliance with environmental standards further enhance its suitability for modern electronics manufacturing. For applications requiring reliable I/O expansion, the PCA9535CD,118 remains a viable and effective solution.