{"id":7991582392500,"title":"Heevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3)","handle":"heevhas-pcf8574-io-expansion-board-i-o-expander-i2c-bus-evaluation-development-module-mcu-expansion-board-module-pack-of-3","description":"\u003ch3\u003eHeevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3)\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eProduct description: 1. I2C interface, I\/O expansion module, two I\/O\nscalability 8 I \/ O (up to 8 simultaneous use of the PCF8574 - extended to 64\nI\/O). 2. Supports two interface types access target plate: pin or row seat,\nsupport i2C bus cascade. 3. Typical application: E\/A resource shortage MCU I \/\nA extension. Specifications: Operating voltage: 3.3 V\/5 V. Number of iOS: 8.\nBus interface: i2c I2C to parallel port expander Open-drain interrupt output\nCompatible with most microcontrollers Latched outputs with high current drive.\nAbility to drive LEDs directly Interface description: VCC: Positive power\nsupply (3.3V\/5V) GND: Power Ground SDA: I2C data input. SCL: I2C clock signal\nPackage includes: 3 x PCF8574 IO Expansion Module\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eBus InterfaceWorking voltage: 3.3V\/5V, including a quasi-bidirectional 8-bit port and an I2C bus interface.\u003c\/li\u003e\n \u003cli\u003eExpandable up to 64 I\/Os: The expansion module based on the I2C interface can expand the IO port (the maximum number of simultaneous uses of PCF8574 can be extended to 64 I\/Os).\u003c\/li\u003e\n \u003cli\u003eCan control LED directlyPCF8574 has very low power consumption and the output latch has high current control capability, so it can control LED directly.\u003c\/li\u003e\n \u003cli\u003eCan be used as a single controller: It also has an interrupt line (INT) that can be connected to the interrupt logic of the MCU. By sending an interrupt signal via INT, the remote IO port can tell the MCU if data is being entered from the port without communicating via the I2C bus.\u003c\/li\u003e\n \u003cli\u003eApplication: PCF8574 is a CMOS circuit. It allows most MCUs to remotely expand IO port via two bi-directional buses (I2C).\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2025-09-23T00:39:09+10:00","created_at":"2025-09-23T00:39:06+10:00","vendor":"Heevhas","type":"IO Modules","tags":["industryDE_Sep2025"],"price":9400,"price_min":9400,"price_max":9400,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":44047757574324,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"de-B0D8Q882YY","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Heevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3)","public_title":null,"options":["Default Title"],"price":9400,"weight":10,"compare_at_price":null,"inventory_management":"shopify","barcode":"X93","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/auspowers.com\/cdn\/shop\/files\/61uiNs3H1AL.jpg?v=1758551948","\/\/auspowers.com\/cdn\/shop\/files\/61wqhYZzOUL.jpg?v=1758551948","\/\/auspowers.com\/cdn\/shop\/files\/61bQMJt8daL.jpg?v=1758551948","\/\/auspowers.com\/cdn\/shop\/files\/51KG331lEwL.jpg?v=1758551948","\/\/auspowers.com\/cdn\/shop\/files\/61mEpmEOzrL.jpg?v=1758551948","\/\/auspowers.com\/cdn\/shop\/files\/61vdZAnNL6L.jpg?v=1758551948"],"featured_image":"\/\/auspowers.com\/cdn\/shop\/files\/61uiNs3H1AL.jpg?v=1758551948","options":["Title"],"media":[{"alt":"[Australia - AusPower] - Heevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3) ","id":32184655872180,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/auspowers.com\/cdn\/shop\/files\/61uiNs3H1AL.jpg?v=1758551948"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/61uiNs3H1AL.jpg?v=1758551948","width":1200},{"alt":"[Australia - AusPower] - Heevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3) ","id":32184655904948,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/auspowers.com\/cdn\/shop\/files\/61wqhYZzOUL.jpg?v=1758551948"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/61wqhYZzOUL.jpg?v=1758551948","width":1200},{"alt":"[Australia - AusPower] - Heevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3) ","id":32184655937716,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/auspowers.com\/cdn\/shop\/files\/61bQMJt8daL.jpg?v=1758551948"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/61bQMJt8daL.jpg?v=1758551948","width":1200},{"alt":"[Australia - AusPower] - Heevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3) ","id":32184655970484,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/auspowers.com\/cdn\/shop\/files\/51KG331lEwL.jpg?v=1758551948"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/51KG331lEwL.jpg?v=1758551948","width":1200},{"alt":"[Australia - AusPower] - Heevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3) ","id":32184656003252,"position":5,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/auspowers.com\/cdn\/shop\/files\/61mEpmEOzrL.jpg?v=1758551948"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/61mEpmEOzrL.jpg?v=1758551948","width":1200},{"alt":"[Australia - AusPower] - Heevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3) ","id":32184656036020,"position":6,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/auspowers.com\/cdn\/shop\/files\/61vdZAnNL6L.jpg?v=1758551948"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/61vdZAnNL6L.jpg?v=1758551948","width":1200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eHeevhas PCF8574 IO Expansion Board I\/O Expander I2C Bus Evaluation Development Module MCU Expansion Board Module (Pack of 3)\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eProduct description: 1. I2C interface, I\/O expansion module, two I\/O\nscalability 8 I \/ O (up to 8 simultaneous use of the PCF8574 - extended to 64\nI\/O). 2. Supports two interface types access target plate: pin or row seat,\nsupport i2C bus cascade. 3. Typical application: E\/A resource shortage MCU I \/\nA extension. Specifications: Operating voltage: 3.3 V\/5 V. Number of iOS: 8.\nBus interface: i2c I2C to parallel port expander Open-drain interrupt output\nCompatible with most microcontrollers Latched outputs with high current drive.\nAbility to drive LEDs directly Interface description: VCC: Positive power\nsupply (3.3V\/5V) GND: Power Ground SDA: I2C data input. SCL: I2C clock signal\nPackage includes: 3 x PCF8574 IO Expansion Module\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eBus InterfaceWorking voltage: 3.3V\/5V, including a quasi-bidirectional 8-bit port and an I2C bus interface.\u003c\/li\u003e\n \u003cli\u003eExpandable up to 64 I\/Os: The expansion module based on the I2C interface can expand the IO port (the maximum number of simultaneous uses of PCF8574 can be extended to 64 I\/Os).\u003c\/li\u003e\n \u003cli\u003eCan control LED directlyPCF8574 has very low power consumption and the output latch has high current control capability, so it can control LED directly.\u003c\/li\u003e\n \u003cli\u003eCan be used as a single controller: It also has an interrupt line (INT) that can be connected to the interrupt logic of the MCU. By sending an interrupt signal via INT, the remote IO port can tell the MCU if data is being entered from the port without communicating via the I2C bus.\u003c\/li\u003e\n \u003cli\u003eApplication: PCF8574 is a CMOS circuit. It allows most MCUs to remotely expand IO port via two bi-directional buses (I2C).\u003c\/li\u003e\n \u003c\/ul\u003e"}