---
product_id: 451276930
title: "5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module"
brand: "dollatek"
price: "4374 som"
currency: KGS
in_stock: true
reviews_count: 5
url: https://www.desertcart.kg/products/451276930-5pcs-pcf8574-io-expansion-board-i-o-expander-i2c-bus
store_origin: KG
region: Kyrgyzstan
---

# 8-bit Output I2C Interface Versatile Compatibility 5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module

**Brand:** dollatek
**Price:** 4374 som
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock Your Project's Potential!

## Quick Answers

- **What is this?** 5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module by dollatek
- **How much does it cost?** 4374 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/451276930-5pcs-pcf8574-io-expansion-board-i-o-expander-i2c-bus)

## Best For

- dollatek enthusiasts

## Why This Product

- Trusted dollatek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Developer's Dream:** Perfect for prototyping and enhancing your tech creations.
- • **Maximize Potential:** Scale up to 64 I/O ports for complex applications.
- • **Expand Your Horizons:** Transform your projects with 8 additional I/O ports!
- • **Seamless Integration:** Compatible with Arduino, AVR, and ARM platforms.
- • **Effortless Connectivity:** Utilize the I2C interface for quick and easy setup.

## Overview

The DollaTek 5Pcs PCF8574 IO Expansion Board is a versatile I/O expander that connects via I2C, providing 8-bit parallel output. Ideal for developers, it supports a wide range of platforms including Arduino, AVR, and ARM, allowing for significant expansion of I/O capabilities in your projects.

## Description

DollaTek trademark Reg.NO:013726393Features:Based on the I2C interface I / O expansion modules, using two I / O can be extended to eight I / O (up to simultaneous use 8 PCF8574, expanded to 64 I / O)Maximum Features: supports two types of Interface, access to the target board : Pin or row seat2 supports I2C bus cascade (via pin, row seat docking methods can be used simultaneously multiple I2C modules)Product Properties:Type: Modular/ Components and partsBand : noneInterface: I2CBoard Type: Pin or row seatSpecifications:Typical applications: for I / O resource constraints the MCU I / O expansionThe main resources: PCF8574, I2C interface, the 8-bit parallelSize:54*15mmNet Weight: 7gPackage Included:5x DollaTek PCF8574 PCF8574T Communication Module

## Features

- Standard interface that can be expanded in a variety of development boards
- I2C Serial port to 8-bit parallel port , support expand into 8×8 = 64 at most
- PCF8574 IO expansion chip with I2C interface, 8-bit parallel port output
- Applicable to a variety of platforms including Arduino / AVR / ARM
- 0

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Processor Count | 1 |
| Connectivity Technology | I2C |

## Product Details

- **Brand:** DollaTek
- **Model name:** DollaTek 013726393
- **Connectivity technology:** I2C
- **Included components:** 5x DollaTek PCF8574 PCF8574T Communication Module
- **Operating system:** Linux

## Images

![5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module - Image 1](https://m.media-amazon.com/images/I/61llGmOOdxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
    Wie beschrieben - einwandfreie Ware
  
  

*by S***5 on Reviewed in Germany on 21 August 2024*

Wie beschrieben - einwandfreie Ware

### ⭐⭐⭐⭐⭐ 







  
  
    Work exactly as they should
  

*by M***R on Reviewed in the United States on 2 May 2021*

I tinkered with these for the fun of it & found them easy to use.  I really liked the use of jumpers to change i2c addresses - much easier than cutting and soldering traces.  Also nice that they can be easily daisy chained with their connectors.

### ⭐⭐⭐⭐ 







  
  
    I/O Expander for Arduino, Raspberry Pi, Pi Pico etc
  

*by T***E on Reviewed in the United Kingdom on 13 June 2021*

These are very neat little boards for "breaking out" the IIC connection, commonly found on modern microcontrollers. This gives you an additional 8-bit port to use as you want. There are no contiguous 8-bit ports on the Arduino Uno or Nano, so it is handy to have  a complete port for a change.The board has a 5-way pin connector at one end and a matching receptacle at the other, so boards can be "daisy chained" together for multiple ports. Links on the board set the bottom 3 bits of the IIC address so that potentially you could have 8 of these boards strung across the desk, giving 64 extra I/O pins!There is an interrupt associated with each module, which is part of the through connection.I would have given these useful little boards 5/5 if zero volts and + supply appeared on the break-out connector! Then you could connect switches, LEDs etc with no flying wires. Still very useful and excellent value - you would be hard pressed to buy the parts at this price!

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**Shop now:** [https://www.desertcart.kg/products/451276930-5pcs-pcf8574-io-expansion-board-i-o-expander-i2c-bus](https://www.desertcart.kg/products/451276930-5pcs-pcf8574-io-expansion-board-i-o-expander-i2c-bus)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-03-13*