{"product_id":"lan8720-ethernet-transceiver-module-rmii-interface-3-3v-single-supply","title":"LAN8720 Ethernet Transceiver Module RMII 3.3V Single-Supply","description":"\u003ch2\u003eLAN8720 Ethernet Transceiver Module – RMII Interface, 3.3V Single-Supply\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eLAN8720 Ethernet Transceiver Module\u003c\/strong\u003e is a compact, low-power PHY (Physical Layer) chip designed for embedded systems, development boards, and industrial networking applications. With its \u003cstrong\u003eRMII (Reduced Media Independent Interface)\u003c\/strong\u003e and single 3.3V supply operation, this module makes adding reliable Ethernet connectivity to your microcontroller or embedded platform straightforward and efficient.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRMII Interface:\u003c\/strong\u003e Simplified wiring and reduced pin count for easy integration with STM32, ESP32, and other popular development boards\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle 3.3V Supply:\u003c\/strong\u003e I\/O voltage range of 1.6V–3.6V for broad compatibility with modern low-voltage MCUs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto-MDIX Support:\u003c\/strong\u003e Automatically detects and corrects cable polarity — no crossover cables needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Energy-efficient design ideal for battery-backed or always-on embedded server applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature:\u003c\/strong\u003e Rated from -40°C to +85°C, suitable for industrial environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e10\/100 Mbps Ethernet:\u003c\/strong\u003e Full support for Fast Ethernet and standard 10BASE-T networking\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Quantities:\u003c\/strong\u003e Choose from 1 pc, 5 pcs, or 10 pcs to match your project needs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand new\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRMII (Reduced Media Independent Interface)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3V single supply; I\/O range 1.6V – 3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEmbedded servers, development board Ethernet interfaces, computer networking\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIY Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 pc \/ 5 pcs \/ 10 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis module is perfect for electronics hobbyists, firmware engineers, and embedded system developers who need a reliable, low-cost Ethernet PHY solution. It pairs seamlessly with popular platforms like STM32 microcontrollers and other RMII-capable MCUs. Whether you're building a home automation hub, an industrial data logger, or an IoT device, the LAN8720 gets your project connected.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e — great for prototyping enclosures and custom DIY builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/glow-in-the-dark-natural-stone-round-beads-diy-jewelry-making\"\u003eGlow in the Dark Natural Stone Round Beads | DIY Jewelry Making\u003c\/a\u003e — explore more DIY project supplies in our store\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: What is the LAN8720 Ethernet Transceiver Module and what does it do?\u003c\/h4\u003e\n\u003cp\u003eA: The LAN8720 is a low-power 10\/100 Mbps Ethernet PHY (Physical Layer Transceiver) module that uses the RMII interface to connect a microcontroller or embedded processor to a standard Ethernet network. It handles the physical layer signal processing, allowing your MCU to send and receive network data over a standard RJ45 connection.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which microcontrollers or development boards are compatible with the LAN8720 RMII module?\u003c\/h4\u003e\n\u003cp\u003eA: The LAN8720 is widely compatible with STM32-series microcontrollers (e.g. STM32F4, STM32F7), as well as other RMII-capable MCUs. It is commonly used in embedded server projects, IoT gateways, and development board Ethernet interface expansions. Its 1.6V–3.6V I\/O range ensures compatibility with modern 3.3V and even some 1.8V systems.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the LAN8720 module support Auto-MDIX?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The LAN8720 features built-in Auto-MDIX, which means it automatically detects the type of Ethernet cable connected (straight-through or crossover) and adjusts accordingly. You do not need a special crossover cable to connect it directly to another device or switch.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the LAN8720 module suitable for industrial use?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The module is rated for an operating temperature range of -40°C to +85°C, making it suitable for demanding industrial environments where standard consumer electronics would fail. Its low-power design also makes it ideal for always-on or embedded server deployments.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many modules do I receive per order?\u003c\/h4\u003e\n\u003cp\u003eA: You can choose your quantity at checkout: 1 pc, 5 pcs, or 10 pcs. This flexibility makes the LAN8720 module a cost-effective choice whether you're prototyping a single unit or building a small production run.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the LAN8720 Ethernet Transceiver Module and what does it do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The LAN8720 is a low-power 10\/100 Mbps Ethernet PHY (Physical Layer Transceiver) module that uses the RMII interface to connect a microcontroller or embedded processor to a standard Ethernet network. 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