{"product_id":"pcf8574-i2c-io-expander-module-for-arduino","title":"PCF8574 I2C IO Expander Module for Arduino","description":"\u003ch2\u003ePCF8574 I2C I\/O Expander Module\u003c\/h2\u003e\u003cp\u003eRunning out of GPIO pins on your Arduino or microcontroller? The PCF8574 I2C I\/O Expander Module gives you 8 additional digital I\/O pins using just 2 wires (SDA + SCL). With configurable I2C addresses via onboard jumpers, you can chain up to 8 modules on a single bus — that's 64 extra pins from one I2C port!\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePCF8574 IC — 8-bit I2C I\/O expander\u003c\/li\u003e\n\u003cli\u003eI2C interface: only 2 wires needed (SDA, SCL)\u003c\/li\u003e\n\u003cli\u003eConfigurable I2C address via A0 jumper (up to 8 modules on one bus)\u003c\/li\u003e\n\u003cli\u003eDual connector options: 4-pin male header (left) and screw terminal (right)\u003c\/li\u003e\n\u003cli\u003eYellow 8-pin GPIO header for easy access to all 8 I\/O pins\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 2.5V – 6V (3.3V and 5V compatible)\u003c\/li\u003e\n\u003cli\u003eOnboard decoupling capacitor for stable operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIC: PCF8574\u003c\/li\u003e\n\u003cli\u003eInterface: I2C\u003c\/li\u003e\n\u003cli\u003eI2C Address: 0x20 – 0x27 (configurable via A0–A2 jumpers)\u003c\/li\u003e\n\u003cli\u003eI\/O Pins: 8 (P0–P7)\u003c\/li\u003e\n\u003cli\u003eSupply Voltage: 2.5V – 6V\u003c\/li\u003e\n\u003cli\u003eCompatible with: Arduino, ESP32, Raspberry Pi, STM32\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGPIO expansion for Arduino and ESP32 projects\u003c\/li\u003e\n\u003cli\u003eLCD backpack \/ I2C LCD interface\u003c\/li\u003e\n\u003cli\u003eKeypad and button matrix scanning\u003c\/li\u003e\n\u003cli\u003eLED and relay control\u003c\/li\u003e\n\u003cli\u003eIndustrial I\/O expansion\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lahore Store","offers":[{"title":"Default Title","offer_id":55803417296969,"sku":"PCF8574-I2C-EXPANDER","price":250.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/9090\/2089\/files\/WhatsAppImage2026-07-11at9.08.02PM_2.jpg?v=1783788672","url":"https:\/\/lahorestore.pk\/products\/pcf8574-i2c-io-expander-module-for-arduino","provider":"Lahore Store","version":"1.0","type":"link"}