KSZ8091RNDIA-TR

{
  "slug": "ksz8091rndia-tr",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Ethernet Transceivers, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "ksz8091rndia-tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ksz8091rndia-tr.kicad_sym",
    "ksz8091rndia-tr.kicad_mod",
    "ksz8091rndia-tr.glb",
    "ksz8091rndia-tr.step",
    "ksz8091rndia-tr.lbr",
    "docs/hero.png",
    "docs/ksz8091rndia-tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ksz8091rndia-tr-hero.glb",
    "ksz8091rndia-tr-hero.overlay.json",
    "ksz8091rndia-tr-etched.glb"
  ],
  "component": {
    "mpn": "KSZ8091RNDIA-TR",
    "manufacturer": "Microchip Tech",
    "package": "QFN-24-EP(4x4)",
    "pin_count": 25,
    "category": "Interface",
    "subcategory": "Ethernet Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589798036169003008",
    "parts": {
      "symbol": "ksz8091rndia-tr.kicad_sym",
      "footprint": "ksz8091rndia-tr.kicad_mod",
      "model_3d": "ksz8091rndia-tr-hero.glb",
      "model_3d_plain": "ksz8091rndia-tr-etched.glb",
      "model_3d_step": "ksz8091rndia-tr-etched.step",
      "model_3d_step_plain": "ksz8091rndia-tr.step",
      "lbr": "ksz8091rndia-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C631651",
      "digikey": "KSZ8091RNDIA-TR-ND",
      "mouser": "998-KSZ8091RNDIATR"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T18:31:33Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "KSZ8091RNDIA-TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "998-KSZ8091RNDIATR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD_1.2",
        "type": "power_out",
        "description": "The 1.2V core supply is generated by the device's internal regulator; decouple it with 2.2 µF and 0.1 µF capacitors to ground."
      },
      {
        "number": "2",
        "name": "VDDA_3.3",
        "type": "power_in",
        "description": "3.3V analog VDD; connect to the board's 3.3V supply through a ferrite bead and decouple with 22 µF and 0.1 µF capacitors to ground."
      },
      {
        "number": "3",
        "name": "RXM",
        "type": "bidirectional",
        "description": "Physical receive or transmit signal, negative (-) side of the differential copper pair."
      },
      {
        "number": "4",
        "name": "RXP",
        "type": "bidirectional",
        "description": "Physical receive or transmit signal, positive (+) side of the differential copper pair."
      },
      {
        "number": "5",
        "name": "TXM",
        "type": "bidirectional",
        "description": "Physical transmit or receive signal, negative (-) side of the differential copper pair."
      },
      {
        "number": "6",
        "name": "TXP",
        "type": "bidirectional",
        "description": "Physical transmit or receive signal, positive (+) side of the differential copper pair."
      },
      {
        "number": "7",
        "name": "XO",
        "type": "output",
        "description": "Crystal feedback for the 25 MHz crystal; leave as no connect when an oscillator or external clock source is used."
      },
      {
        "number": "8",
        "name": "XI",
        "type": "input",
        "description": "Clock input: 25 MHz ±50 ppm crystal, oscillator or external clock in RMII 25 MHz mode, or 50 MHz ±50 ppm oscillator or clock in RMII 50 MHz mode."
      },
      {
        "number": "9",
        "name": "REXT",
        "type": "input",
        "description": "Sets the PHY transmit output current; connect a 6.49 kΩ resistor to ground on this pin."
      },
      {
        "number": "10",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "MII management data I/O with a weak internal pull-up, open-drain output, requiring an external 1.0 kΩ pull-up resistor."
      },
      {
        "number": "11",
        "name": "MDC",
        "type": "input",
        "description": "MII management clock input, synchronous to the MDIO data pin."
      },
      {
        "number": "12",
        "name": "RXD1",
        "type": "output",
        "description": "RMII receive data output bit 1, synchronous to the 50 MHz REF_CLK; internal pull-down during power-up/reset."
      },
      {
        "number": "13",
        "name": "RXD0",
        "type": "output",
        "description": "RMII receive data output bit 0, synchronous to the 50 MHz REF_CLK; internal pull-up during power-up/reset."
      },
      {
        "number": "14",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply of 3.3V, 2.5V, or 1.8V; connect to the board supply for the chosen VDDIO and decouple with 22 µF and 0.1 µF capacitors to ground."
      },
      {
        "number": "15",
        "name": "CRS_DV/PHYAD[1:0]",
        "type": "output",
        "description": "RMII carrier sense/receive data valid output; during reset it is a strap that latches PHY address 00011b (pull-up) or 00000b (pull-down, default) at reset de-assertion."
      },
      {
        "number": "16",
        "name": "REF_CLK",
        "type": "output",
        "description": "Provides the 50 MHz RMII reference clock output to the MAC in RMII 25 MHz mode; it is a no connect in RMII 50 MHz mode."
      },
      {
        "number": "17",
        "name": "RXER/PME_EN",
        "type": "output",
        "description": "RMII receive error output; during reset it is a strap that latches PME_EN, with pull-up enabling and pull-down (default) disabling the PME output for Wake-On-LAN."
      },
      {
        "number": "18",
        "name": "INTRP/PME_N2",
        "type": "bidirectional",
        "description": "Programmable interrupt output (active low by default) or PME_N Wake-On-LAN output; open-drain with weak pull-up, requiring an external 1.0 kΩ pull-up to VDDIO when used for interrupt or PME."
      },
      {
        "number": "19",
        "name": "TXEN",
        "type": "input",
        "description": "RMII transmit enable input from the MAC, asserted with the first preamble dibit and negated before the first REF_CLK following the final dibit."
      },
      {
        "number": "20",
        "name": "TXD0",
        "type": "input",
        "description": "RMII transmit data input bit 0 from the MAC, accepted by the PHY when TXEN is asserted."
      },
      {
        "number": "21",
        "name": "TXD1",
        "type": "bidirectional",
        "description": "RMII transmit data input bit 1 from the MAC in normal operation; it is the NAND tree output in NAND tree test mode."
      },
      {
        "number": "22",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "23",
        "name": "LED0/PME_N1/ANEN_SPEED",
        "type": "output",
        "description": "Programmable LED0 link/activity output, or PME_N1 Wake-On-LAN output (open-drain, requires 1.0 kΩ pull-up to VDDIO); at reset it latches auto-negotiation enable and speed (pull-up = enable AN and 100 Mbps, pull-down = 10 Mbps)."
      },
      {
        "number": "24",
        "name": "RST#",
        "type": "input",
        "description": "Active-low chip reset input with an internal pull-up."
      },
      {
        "number": "25",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The MPN suffix KSZ8091RNDIA-TR (industrial grade, tape-and-reel) does not appear in the provided pag; The exposed paddle is printed as 'PADDLE GND' with no number, so it is listed as 'PADDLE'. Confirm t; VDD_1.2 (pin 1) is typed power_out because the datasheet says it is supplied by the internal 1.2V re",
          "exposed pad 25 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint",
          "2/25 pins cited to the wrong page (name found elsewhere): ['7:XO@p6', '8:XI@p6']"
        ],
        "pages_sent": 28,
        "cost_usd": 0.1437,
        "at": "2026-10-20T18:29:27"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589798036169003008",
        "pages": 62,
        "sha256": "c33fce4729df927d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ksz8091rndia-tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ksz8091rndia-tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1d540b4a2c133949daa9748a14b1085632d0d4c1f4c847cbe1688014b444761f",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}