---
product_id: 352232696
title: "PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module - 2Pcs"
brand: "noyito"
price: "B/.41"
currency: PAB
in_stock: true
reviews_count: 5
url: https://www.desertcart.com.pa/products/352232696-pcf8574-io-expansion-board-i-o-expander-i2c-bus-evaluation
store_origin: PA
region: Panama
---

# Compact size I2C interface 8-bit parallel port PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module - 2Pcs

**Brand:** noyito
**Price:** B/.41
**Availability:** ✅ In Stock

## Summary

> 🔗 Unlock limitless possibilities with NOYITO!

## Quick Answers

- **What is this?** PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module - 2Pcs by noyito
- **How much does it cost?** B/.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/352232696-pcf8574-io-expansion-board-i-o-expander-i2c-bus-evaluation)

## Best For

- noyito enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Access:** Choose between pin or row interface for ultimate flexibility.
- • **Cascade Connectivity:** Easily cascade multiple modules for enhanced functionality.
- • **Expand Your Horizons:** Connect up to 8 boards for a whopping 64 I/O ports!
- • **Lightweight Champion:** Weighing in at just 11g, it’s the featherweight of expansion boards.
- • **Seamless Integration:** Effortlessly integrates with your existing I2C-bus setup.

## Overview

The NOYITO PCF8574 IO Expansion Board is a powerful 8-bit I/O expander designed for I2C-bus applications. With the ability to connect up to 8 boards, it offers a total of 64 I/O ports, making it an essential tool for developers looking to enhance their microcontroller's capabilities. Its compact design and lightweight build ensure easy integration into any project.

## Description

NOYITOPCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module - 2Pcs

## Features

- The PCF8574 IO Expansion Board is used as remote 8-bit I/O expander for I2C-bus. Up to 8 PCF8574 IO Expansion Board can be connected to the I2C-bus, providing up to 64 I/O ports.
- PCF8574, I2C interface, 8-bit parallel port
- For the lack of I / O resources mcu to I / O expansion
- Supports two types of access to the target board interface: pin or row
- Supports I2C bus cascade (via pencil row docking methods used simultaneously several I2C modules)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | NOYITO |
| Product Dimensions | 3.75 x 1.67 x 1 cm; 11 g |
| Item model number | NOPCF8574IOE |
| Manufacturer | NOYITO |
| Series | PCF8574 IO Expansion Board |
| Are Batteries Included | No |
| Item Weight | 11 g |

## Product Details

- **Brand:** NOYITO
- **Model Name:** PCF8574 IO Expansion Board
- **Connectivity Technology:** I2C
- **Operating System:** Linux
- **Compatible Devices:** SBCs with I2C support

## Images

![PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module - 2Pcs - Image 1](https://m.media-amazon.com/images/I/81iVd9334gL.jpg)

## Questions & Answers

**Q: Can this be used in line to extend the cabling distance of a sensor connected to sda/scl on an uno?”**
A: I haven't tried it, it's theoretically possible, it can make 2 I/Os expandable to 8 I/Os. Support cascade, up to 8 modules can be used at the same time, expanding to 64 I/O. Set the module address through the DIP switch,

**Q: What I2C port addresses can these boards be set to?**
A: 8 addresses
Address.     Read.      Write
Switch
000.            41.           40
001.            43.           42
010.            44.           44
011.            47.           46
100.            49.           48
101.            4B.           4A
110.            4D.           4C
111.            4F.            4E
                   Above is Hex

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Works great out of the "bag!"
  

*by P***A on Reviewed in the United States on 19 March 2020*

Using it to interface some old ICs via 8-bit parallel bus with my microcontroller.  No issues.  Great quality for the money.

### ⭐⭐⭐⭐ 







  
  
    Good
  

*by K***N on Reviewed in the United States on 13 July 2020*

they work well, just wish there were mounting holes so they could easily be placed in a project box

### ⭐⭐⭐⭐⭐ 







  
  
    Works Perfect
  

*by M***H on Reviewed in the United States on 23 July 2020*

Used one to reduce the used number of pins on a 4x4 keypad from 8 to 2.

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-05-20*