Texas Instruments

PCF8575DBR  

I/O Expanders

PCF8575DBR Description

The PCF8575DBR is a 16-bit I/O expander from Texas Instruments, designed to interface with microcontrollers using the I2C or SMBus protocols. It operates at a clock frequency of 400 kHz, making it suitable for applications requiring high-speed data transfer. The device features a supply voltage range of 2.5V to 5.5V and can source or sink 1mA or 25mA respectively, providing flexibility in power management. With a moisture sensitivity level of 1 (unlimited), the PCF8575DBR is designed for reliable operation in various environments. It is RoHS compliant and REACH unaffected, ensuring environmental sustainability.

PCF8575DBR Features

• 16-bit I/O Expander: Offers 16 GPIO pins for expanding the I/O capabilities of microcontrollers.
• 400 kHz Clock Frequency: Supports high-speed data transfer for efficient communication.
• 2.5V to 5.5V Supply Voltage: Provides flexibility in power supply options.
• 1mA/25mA Source/Sink Current: Allows for different current requirements based on the application.
• I2C and SMBus Interface: Enables communication with microcontrollers using these popular protocols.
• POR Feature: Offers power-on reset functionality for reliable startup.
• Interrupt Output: Facilitates communication with the microcontroller when specific I/O changes occur.

PCF8575DBR Applications

The PCF8575DBR is ideal for applications where expanding the I/O capabilities of a microcontroller is necessary. Some specific use cases include:

• Industrial Automation: For controlling and monitoring various sensors and actuators in automated systems.
• Smart Home Devices: To manage multiple input and output devices in home automation systems.
• Portable Electronics: In devices where space is at a premium, the PCF8575DBR can help manage multiple functions with a minimal number of I/O pins.
• Automotive Infotainment Systems: For controlling various user interface elements and peripherals in vehicles.

Conclusion of PCF8575DBR

The PCF8575DBR is a versatile I/O expander that offers high-speed communication, flexible power management, and a wide range of I/O options. Its compatibility with I2C and SMBus protocols, along with its robust feature set, makes it an excellent choice for applications requiring reliable and efficient I/O expansion. With its focus on performance and sustainability, the PCF8575DBR stands out as a reliable solution in the electronics industry.

PCF8575DBR Documents

Download datasheets and manufacturer documentation for PCF8575DBR

Images :

Mechanical Outline Drawing      

PCN :

Process Change Notification (PDF)       Product Change Notification 2024-09-11 (PDF)      

Models :

PCF8575DBR Symbol & Footprint by SnapMagic      

Product Catalogs :

I2C Guide (Rev. E)