LAN8710A-EZC

{
  "slug": "lan8710a-ezc",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Ethernet ICs, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "communication interface chip-uart-485-232",
    "lan8710a-ezc",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lan8710a-ezc.kicad_sym",
    "lan8710a-ezc.kicad_mod",
    "lan8710a-ezc.glb",
    "lan8710a-ezc.step",
    "lan8710a-ezc.lbr",
    "docs/hero.png",
    "docs/lan8710a-ezc-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lan8710a-ezc-hero.glb",
    "lan8710a-ezc-hero.overlay.json",
    "lan8710a-ezc-etched.glb"
  ],
  "component": {
    "mpn": "LAN8710A-EZC",
    "manufacturer": "Microchip Tech",
    "package": "QFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Ethernet ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ddcdc4688d29215696934f6f0adc8b2a.pdf",
    "parts": {
      "symbol": "lan8710a-ezc.kicad_sym",
      "footprint": "lan8710a-ezc.kicad_mod",
      "model_3d": "lan8710a-ezc-hero.glb",
      "model_3d_plain": "lan8710a-ezc-etched.glb",
      "model_3d_step": "lan8710a-ezc-etched.step",
      "model_3d_step_plain": "lan8710a-ezc.step",
      "lbr": "lan8710a-ezc.lbr"
    },
    "distributor_links": {
      "lcsc": "C633277"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T18:11:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 887 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD2A",
        "type": "power_in",
        "description": "+3.3V analog port power to Channel 2 and the internal 1.2V regulator."
      },
      {
        "number": "2",
        "name": "LED2/nINTSEL",
        "type": "bidirectional",
        "description": "Link speed LED output (O12, active when operating at 100Mbps) that doubles as the nINTSEL strap selecting nINT (floated or pulled to VDD2A) or TXER/TXD4 (pulled low) on pin 18."
      },
      {
        "number": "3",
        "name": "LED1/REGOFF",
        "type": "bidirectional",
        "description": "Link activity LED output (O12) that doubles as the REGOFF strap; pulling it high to VDD2A disables the internal 1.2V regulator, floating or low enables it."
      },
      {
        "number": "4",
        "name": "XTAL2",
        "type": "output",
        "description": "External crystal output; leave unconnected when using a single-ended clock oscillator."
      },
      {
        "number": "5",
        "name": "XTAL1/CLKIN",
        "type": "input",
        "description": "External crystal input or single-ended clock oscillator input (REF_CLK in RMII mode)."
      },
      {
        "number": "6",
        "name": "VDDCR",
        "type": "power_in",
        "description": "+1.2V digital core power, supplied by the on-chip regulator unless REGOFF disables it; use 1uF and 470pF decoupling capacitors in parallel to ground."
      },
      {
        "number": "7",
        "name": "RXCLK/PHYAD1",
        "type": "bidirectional",
        "description": "MII receive clock output (25MHz at 100BASE-TX, 2.5MHz at 10BASE-T) that doubles as the PHY address bit 1 configuration strap (internal pull-down)."
      },
      {
        "number": "8",
        "name": "RXD3/PHYAD2",
        "type": "bidirectional",
        "description": "MII receive data bit 3 output that doubles as the PHY address bit 2 configuration strap (internal pull-down); not used in RMII mode."
      },
      {
        "number": "9",
        "name": "RXD2/RMIISEL",
        "type": "bidirectional",
        "description": "MII receive data bit 2 output that doubles as the MII/RMII select strap (low to VSS selects MII, high to VDDIO selects RMII; internal pull-down)."
      },
      {
        "number": "10",
        "name": "RXD1/MODE1",
        "type": "bidirectional",
        "description": "Receive data bit 1 output that doubles as the PHY operating mode bit 1 configuration strap (internal pull-up)."
      },
      {
        "number": "11",
        "name": "RXD0/MODE0",
        "type": "bidirectional",
        "description": "Receive data bit 0 output that doubles as the PHY operating mode bit 0 configuration strap (internal pull-up)."
      },
      {
        "number": "12",
        "name": "VDDIO",
        "type": "power_in",
        "description": "+1.6V to +3.6V variable I/O power."
      },
      {
        "number": "13",
        "name": "RXER/RXD4/PHYAD0",
        "type": "bidirectional",
        "description": "Receive error output (optional in RMII mode), RXD4 in Symbol Interface mode, and PHY address bit 0 configuration strap (internal pull-down)."
      },
      {
        "number": "14",
        "name": "CRS",
        "type": "output",
        "description": "MII carrier sense output indicating detection of a carrier (internal pull-down)."
      },
      {
        "number": "15",
        "name": "COL/CRS_DV/MODE2",
        "type": "bidirectional",
        "description": "Collision detect output in MII mode or carrier sense/receive data valid output in RMII mode, doubling as the PHY operating mode bit 2 configuration strap (internal pull-up)."
      },
      {
        "number": "16",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "Serial Management Interface data input/output (open-drain output)."
      },
      {
        "number": "17",
        "name": "MDC",
        "type": "input",
        "description": "Serial Management Interface clock input."
      },
      {
        "number": "18",
        "name": "nINT/TXER/TXD4",
        "type": "bidirectional",
        "description": "Active-low interrupt output (external pull-up to VDDIO) or MII transmit error/TXD4 input depending on the nINTSEL strap."
      },
      {
        "number": "19",
        "name": "nRST",
        "type": "input",
        "description": "Active-low system reset input with internal pull-up."
      },
      {
        "number": "20",
        "name": "TXCLK",
        "type": "output",
        "description": "MII transmit clock output (25MHz at 100BASE-TX, 2.5MHz at 10BASE-T); not used in RMII mode."
      },
      {
        "number": "21",
        "name": "TXEN",
        "type": "input",
        "description": "Transmit enable indicating valid transmit data on TXD[3:0] (only TXD[1:0] in RMII mode), internal pull-down."
      },
      {
        "number": "22",
        "name": "TXD0",
        "type": "input",
        "description": "Transmit data bit 0 from the MAC, used in all modes."
      },
      {
        "number": "23",
        "name": "TXD1",
        "type": "input",
        "description": "Transmit data bit 1 from the MAC, used in all modes."
      },
      {
        "number": "24",
        "name": "TXD2",
        "type": "input",
        "description": "Transmit data bit 2 from the MAC in MII mode; must be grounded in RMII mode."
      },
      {
        "number": "25",
        "name": "TXD3",
        "type": "input",
        "description": "Transmit data bit 3 from the MAC in MII mode; must be grounded in RMII mode."
      },
      {
        "number": "26",
        "name": "RXDV",
        "type": "output",
        "description": "Receive data valid output indicating recovered and decoded data is available on the RXD pins."
      },
      {
        "number": "27",
        "name": "VDD1A",
        "type": "power_in",
        "description": "+3.3V analog port power to Channel 1."
      },
      {
        "number": "28",
        "name": "TXN",
        "type": "bidirectional",
        "description": "Ethernet transmit/receive negative channel 1 analog pin."
      },
      {
        "number": "29",
        "name": "TXP",
        "type": "bidirectional",
        "description": "Ethernet transmit/receive positive channel 1 analog pin."
      },
      {
        "number": "30",
        "name": "RXN",
        "type": "bidirectional",
        "description": "Ethernet transmit/receive negative channel 2 analog pin."
      },
      {
        "number": "31",
        "name": "RXP",
        "type": "bidirectional",
        "description": "Ethernet transmit/receive positive channel 2 analog pin."
      },
      {
        "number": "32",
        "name": "RBIAS",
        "type": "passive",
        "description": "Analog reference input requiring a 12.1k ohm (1%) resistor to ground; nominal voltage 1.2V."
      },
      {
        "number": "33",
        "name": "VSS",
        "type": "power_in",
        "description": "Common ground exposed pad, which must be connected to the ground plane with a via array."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The exposed pad (VSS) has no pin number in the datasheet. I numbered it 33 by convention.; The datasheet gives only buffer types, not KiCad ERC types. Multiplexed strap/IO pins are mapped to ; VDDCR is an input when the regulator is off (REGOFF) but is supplied by the on-chip regulator by def",
          "11/33 pins cited to the wrong page (name found elsewhere): ['4:XTAL2@p12', '13:RXER/RXD4/PHYAD0@p9', '14:CRS@p10', '15:COL/CRS_DV/MODE2@p10']"
        ],
        "pages_sent": 27,
        "cost_usd": 0.2586,
        "at": "2026-10-23T18:10:50"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ddcdc4688d29215696934f6f0adc8b2a.pdf",
        "pages": 80,
        "sha256": "0f4b8670bcfc7e63",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lan8710a-ezc.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lan8710a-ezc-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2b381bcaf15e43f4b0869c7bea1cfd0e738f15420b8e49020bdaeed336120249",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}