The PCF8574 IO Expansion Board is designed to expand the input/output (I/O) capabilities of microcontrollers using the I2C bus interface. It provides 8 additional I/O ports and supports cascading multiple modules to extend up to 64 I/O ports, making it ideal for projects involving keypads, LED arrays, sensor networks, and control systems. Compatible with Arduino, Raspberry Pi, and other microcontrollers, this board simplifies wiring and development.

Available across Pakistan, including Lahore, Karachi, Peshawar, Quetta, Multan, Bhakkar, Chitral, Ghotki, Hyderabad, Jhelum, Lodhran, Dunya Pur, Kahror Pakka, Bahawalpur, Ahmadpur East, Hasilpur, Khairpur Tamewali, Yazman, Rahim Yar Khan, Liaquatpur, Sadiqabad, Dera Ghazi Khan, Kot Chutta, Taunsa Sharif, Layyah, Fateh Pur, Chowk Azam, Bahawalnagar, Haroon Abad, Minchinabad, Chishtian, Fort Abbas, Faqeer Wali, Muzaffargarh, Qasba Gujrat, Ali Pur, Jatoi, Kot Addu, Rajanpur, Jampur, Chiniot, Bhawana, Lalian, Faisalabad, Khurrianwala, Jaranwala, Chak Jhumra, Samundri, Tandlianwala, Shah Kot, Jhang, Rodu Sultan, 18 Hazari, Ahmedpur Sial, Mandi Shah Jewana, Shorkot, Shorkot Cantt, Toba Tek Singh, Gojra, Kamalia, Pir Mahal, Gujranwala, Rahiwali, Nowshera Virkan, Kamoke, Wazirabad, Kalaske, Gujrat, Jalalpur Jattan, Lala Musa, Kharian, Kharian Cantt, Sarai Alamgir, Hafizabad, Pindi Bhattian, Mandi Bahauddin, Phalia, Malakwal, Narowal, Shakargarh, Zafarwal, Sialkot, Daska, Pasroor, Sambrial, Kasur, Chunian, Kot Radha Kishan, Pattoki, Raiwind, Nankana Sahib, More Khunda, Bucheki, Sangla Hill, Manawala, Sheikhupura, Farooqabad, Muridke, Safdarabad, Sharak Pur, Khanewal, Jahanian, Kabir Wala, Mian Channu, Multan, Jalalpur Pirwala, Shujabad, Vehari, Garha More, Gaggo Mandi, Burewala, Mailsi, Pindi Gheb, Attock, Fateh Jang, Hassan Abdal, Jand, Chakwal, Choa Saiden Shah, Kallar Kahar, Talagang, Jhelum, Dina, Pind Dadan Khan, Sohawa, Kahuta, Rawalpindi (Lalkurti), Rawalpindi (Khanna Pull), Daultala, Gujar Khan, Kallar Syedan, Murree, Taxila, Okara, Basi Pur, Okara Cantt, Depalpur, Renala Khurd, Qaboola, Pakpattan, Arifwala, Sahiwal, Chichawatni, Bhakkar, Darya Khan, Kaloor Kot, Jauharabad, Noorpur Thal, Quaidabad, Naushera, Isa Khel, Much, Mianwali, Piplan, Bhalwal, Bhera, Kot Momin, Sargodha, Shahpur, Sillanwali, Badin, Matli, Sujawal, Mirpur Bathoro, Mirpur Sakro, Thatta, Dadu, Khairpur Nathan Shah, Mehar, Jamshoro, Sehwan, Kotri, New Saeedabad, Matiari, Hala, Tando Allah Yar, Tando Muhammad Khan, Larkana, Jacobabad, Kashmore, Kandhkot, Ratodero, Qambar-Shahdadkot, Nasirabad, Shahdadkot, Shikarpur, Khanpur, Mirpur Khas, Digri, Jhudo, Kot Ghulam Muhammad, Sanghar, Khipro, Shahdadpur, Sinjhoro, Tando Adam, Chachro, Islamkot, Mithi, Umerkot, Kunri, Pithoro, Sukkur, Daharki, Mirpur Mathelo, Khairpur, Gambat, Thari Mirwah, Pano Aqil, Rohri, Naushahro Feroze, Mehrab Pur, Moro, Kandiaro, Daulatpur, Daur, Nawabshah, Sakrand, and Mirpur Azad Kashmir.

Key Features

• I2C Interface: Uses only 2 data lines for efficient communication.
• Expandable I/O Ports: Provides 8 additional I/O ports per module, expandable up to 64 ports.
• Compatibility: Supports Arduino, Raspberry Pi, ESP8266, STM32, and more.
• Multiple Applications: Ideal for sensor integration, LED matrices, switch arrays, and relay modules.
• Ease of Use: Pre-soldered pins allow quick prototyping and installation.

Internal Linking Headline: Pair This Module with These Components

• Arduino Uno R3 – Compatible Controller
• I2C LCD Display Module
• Jumper Wires for Prototyping

External Linking Headline: Learn More About I2C and Expansion Boards

• How I2C Communication Works
• Using PCF8574 for I/O Expansion

FAQs

1. How many modules can be connected?
Up to 8 modules can be cascaded for a total of 64 I/O ports.

2. Is it compatible with Arduino?
Yes, it works seamlessly with Arduino and other microcontrollers supporting I2C.

3. What applications is it ideal for?
It’s perfect for sensor arrays, LED matrices, switchboards, and robotics projects.

4. Does it require soldering?
No, it comes pre-soldered for quick and easy integration.