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PCF8574PWR from TI,Texas Instruments

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PCF8574PWR

Manufacturer: TI

Remote 8-Bit I/O Expander for I2C-Bus

Partnumber Manufacturer Quantity Availability
PCF8574PWR TI 1000 In Stock

Description and Introduction

Remote 8-Bit I/O Expander for I2C-Bus # Introduction to the PCF8574PWR I/O Expander  

The **PCF8574PWR** is a versatile **I²C-bus controlled 8-bit I/O expander** designed to enhance microcontroller-based systems by providing additional general-purpose input/output (GPIO) pins. This CMOS-based component simplifies system design by reducing the need for multiple discrete components, making it ideal for space-constrained applications.  

Featuring **quasi-bidirectional I/O ports**, the PCF8574PWR allows seamless interfacing with sensors, switches, LEDs, and other peripherals. Each I/O pin can be independently configured as an input or output, offering flexibility in system integration. The device operates on a supply voltage ranging from **2.5V to 6V**, ensuring compatibility with various logic levels.  

Communication is facilitated via the **I²C interface**, supporting clock frequencies up to **400 kHz**. The built-in interrupt output pin notifies the host microcontroller of input state changes, reducing polling overhead. With a low standby current consumption, the PCF8574PWR is suitable for power-sensitive applications.  

Housed in a compact **TSSOP-16 package**, this expander is widely used in industrial control, consumer electronics, and embedded systems where additional I/O expansion is required without increasing microcontroller complexity. Its robust design and ease of use make it a reliable choice for expanding digital interfaces efficiently.

Application Scenarios & Design Considerations

Remote 8-Bit I/O Expander for I2C-Bus

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