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PCF8574RGTR from TI,Texas Instruments

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PCF8574RGTR

Manufacturer: TI

Remote 8-Bit I/O Expander for I2C-Bus 16-QFN -40 to 85

Partnumber Manufacturer Quantity Availability
PCF8574RGTR TI 2899 In Stock

Description and Introduction

Remote 8-Bit I/O Expander for I2C-Bus 16-QFN -40 to 85 The **PCF8574RGTR** is a versatile **I/O expander** integrated circuit designed to simplify interfacing between microcontrollers and peripheral devices. Utilizing the **I²C bus protocol**, this 8-bit remote I/O expander enables efficient communication with minimal wiring, making it ideal for space-constrained applications.  

Featuring **quasi-bidirectional I/O ports**, the PCF8574RGTR allows seamless integration of additional digital inputs and outputs without requiring complex circuitry. Its interrupt output pin enhances system responsiveness by signaling changes in input states, reducing the need for continuous polling.  

With an operating voltage range of **2.5V to 6V**, the device is compatible with both **3.3V and 5V systems**, ensuring broad applicability across various embedded designs. The compact **TSSOP-16 package** further supports high-density PCB layouts.  

Common applications include **keypad scanning, LED control, sensor interfacing, and industrial automation**. Its straightforward I²C interface simplifies firmware development, while built-in latches ensure stable signal retention.  

Engineers favor the PCF8574RGTR for its **low power consumption, ease of use, and cost-effectiveness**, making it a reliable choice for expanding microcontroller capabilities in modern electronic systems.

Application Scenarios & Design Considerations

Remote 8-Bit I/O Expander for I2C-Bus 16-QFN -40 to 85

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