The PCF8575CTS/1,112 is a robust I/O expander from NXP Semiconductors designed to provide a seamless extension of the I/O capabilities for microcontroller-based systems. This I/O expander chip is a perfect solution for applications where additional I/Os are necessary, and it is particularly well-suited for use in embedded systems, industrial controls, and other sophisticated electronic products.

Key Features

• I/O Expansion: The PCF8575CTS/1,112 offers 16 additional I/O ports, which can be configured as inputs or outputs, providing significant flexibility to the host controller.
• Interface: It utilizes the I²C-bus interface, supporting both 100 kHz (Standard-mode) and 400 kHz (Fast-mode) clock frequencies for communication with the host microcontroller.
• Interrupt Output: An interrupt output pin is available and can be activated when any input state changes, thereby minimizing the need for the host microcontroller to poll the expander.
• Addressing: Up to eight PCF8575CTS/1,112 devices can be connected to the I²C-bus, allowing for the expansion of up to 128 I/Os, thanks to three hardware address pins that enable the configuration of multiple device addresses on the same bus.
• Low Standby Current: The device features a low standby current, making it an energy-efficient choice for power-sensitive applications.

Applications

The versatility of the PCF8575CTS/1,112 makes it suitable for a wide range of applications, including:

• Server motherboards
• Industrial automation systems
• Home automation and smart home devices
• Consumer electronics
• Medical equipment

Technical Specifications

• Product: I/O Expander
• Part Number: PCF8575CTS/1,112
• Manufacturer: NXP Semiconductors
• Number of I/O: 16
• Interface Type: I²C
• Supply Voltage: 2.5 V to 5.5 V
• Operating Temperature: -40°C to +85°C
• Package / Case: TSSOP-24

The PCF8575CTS/1,112 is a highly integrated solution that offers a straightforward approach to I/O expansion and is available in a compact TSSOP-24 package, ensuring it can fit into space-constrained applications while providing the necessary functionality to enhance system performance.