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PCF8574ADW from TI,Texas Instruments

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PCF8574ADW

Manufacturer: TI

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

Partnumber Manufacturer Quantity Availability
PCF8574ADW TI 66 In Stock

Description and Introduction

Remote 8-Bit I/O Expander for I2C-Bus The PCF8574ADW is a versatile 8-bit I/O expander designed for I²C-bus applications, offering a simple and efficient solution for expanding the input/output capabilities of microcontrollers. This CMOS-based integrated circuit provides bidirectional I/O ports, making it ideal for interfacing with various peripherals such as sensors, switches, and displays.  

With its I²C interface, the PCF8574ADW enables communication with minimal wiring, supporting clock frequencies up to 400 kHz. Each I/O pin can be independently configured as an input or output, providing flexibility in system design. The device also features an interrupt output, which signals the microcontroller when an input state changes, reducing the need for continuous polling.  

Operating at a supply voltage range of 2.5V to 6V, the PCF8574ADW is suitable for both low-power and standard applications. Its compact SOIC-16 package ensures space-efficient integration into various electronic designs. Additionally, the built-in latched outputs provide stable signal transmission, enhancing reliability in noisy environments.  

Engineers frequently use the PCF8574ADW in industrial control systems, automation, and embedded applications where additional I/O expansion is required without increasing microcontroller complexity. Its ease of use and robust performance make it a preferred choice for expanding digital interfaces efficiently.

Application Scenarios & Design Considerations

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

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