KSZ8041NLI-TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ksz8041nli-tr",
  "title": "KSZ8041NLI-TR",
  "brief": "Microchip Tech Interface - Specialized, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "ksz8041nli-tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "KSZ8041NLI-TR",
    "manufacturer": "Microchip Tech",
    "package": "QFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Interface",
    "subcategory": "Interface - Specialized",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586172114378633216",
    "parts": {
      "symbol": "ksz8041nli-tr.kicad_sym",
      "footprint": "ksz8041nli-tr.kicad_mod",
      "model_3d": "ksz8041nli-tr-hero.glb",
      "model_3d_plain": "ksz8041nli-tr-etched.glb",
      "model_3d_step": "ksz8041nli-tr-etched.step",
      "model_3d_step_plain": "ksz8041nli-tr.step",
      "lbr": "ksz8041nli-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C20177"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T22:46:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "2",
        "name": "VDDPLL_1.8",
        "type": "power_in",
        "description": "1.8V analog VDD supplying the PLL; decouple with 10uF and 0.1uF capacitors to ground."
      },
      {
        "number": "3",
        "name": "VDDA_3.3",
        "type": "power_in",
        "description": "3.3V analog VDD; connect to the board's 3.3V supply through a ferrite bead."
      },
      {
        "number": "4",
        "name": "RX-",
        "type": "bidirectional",
        "description": "Physical receive or transmit signal, negative differential (I/O)."
      },
      {
        "number": "5",
        "name": "RX+",
        "type": "bidirectional",
        "description": "Physical receive or transmit signal, positive differential (I/O)."
      },
      {
        "number": "6",
        "name": "TX-",
        "type": "bidirectional",
        "description": "Physical transmit or receive signal, negative differential (I/O)."
      },
      {
        "number": "7",
        "name": "TX+",
        "type": "bidirectional",
        "description": "Physical transmit or receive signal, positive differential (I/O)."
      },
      {
        "number": "8",
        "name": "XO",
        "type": "output",
        "description": "Crystal feedback, used only in MII mode with a 25 MHz crystal; no connect when an oscillator or external clock is used or in RMII mode."
      },
      {
        "number": "9",
        "name": "XI / REFCLK",
        "type": "input",
        "description": "Crystal, oscillator or external clock input: 25MHz +/-50ppm in MII mode, or 50MHz +/-50ppm (oscillator or external clock only) in RMII mode."
      },
      {
        "number": "10",
        "name": "REXT",
        "type": "bidirectional",
        "description": "Sets physical transmit output current; pull down with a 6.49KΩ resistor to ground."
      },
      {
        "number": "11",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "Management interface (MII) data I/O; requires an external 4.7KΩ pull-up resistor."
      },
      {
        "number": "12",
        "name": "MDC",
        "type": "input",
        "description": "Management interface (MII) clock input, synchronous to the MDIO data interface."
      },
      {
        "number": "13",
        "name": "RXD3 / PHYAD0",
        "type": "bidirectional",
        "description": "MII mode receive data output[3]; in config mode the pull-up/pull-down is latched as PHYADDR[0] at power-up/reset."
      },
      {
        "number": "14",
        "name": "RXD2 / PHYAD1",
        "type": "bidirectional",
        "description": "MII mode receive data output[2]; in config mode the pull-up/pull-down is latched as PHYADDR[1] at power-up/reset."
      },
      {
        "number": "15",
        "name": "RXD1 / RXD[1] / PHYAD2",
        "type": "bidirectional",
        "description": "MII mode receive data output[1] or RMII mode receive data output[1]; in config mode the pull-up/pull-down is latched as PHYADDR[2] at power-up/reset."
      },
      {
        "number": "16",
        "name": "RXD0 / RXD[0] / DUPLEX",
        "type": "bidirectional",
        "description": "MII mode receive data output[0] or RMII mode receive data output[0]; in config mode latched as DUPLEX at power-up/reset (pull-up = full duplex, pull-down = half duplex)."
      },
      {
        "number": "17",
        "name": "VDDIO_3.3",
        "type": "power_in",
        "description": "3.3V digital VDD; connect to the board's 3.3V supply."
      },
      {
        "number": "18",
        "name": "RXDV / CRSDV / CONFIG2",
        "type": "bidirectional",
        "description": "MII mode receive data valid output or RMII mode carrier sense/receive data valid output; in config mode the pull-up/pull-down is latched as CONFIG2 at power-up/reset."
      },
      {
        "number": "19",
        "name": "RXC",
        "type": "output",
        "description": "MII mode receive clock output."
      },
      {
        "number": "20",
        "name": "RXER / RX_ER / ISO",
        "type": "bidirectional",
        "description": "MII or RMII receive error output; in config mode the pull-up/pull-down is latched as ISOLATE at power-up/reset (pull-up = enable)."
      },
      {
        "number": "21",
        "name": "INTRP",
        "type": "output",
        "description": "Programmable interrupt output with internal pull-up; active low by default, active high when register 1Fh bit 9 is set."
      },
      {
        "number": "22",
        "name": "TXC",
        "type": "output",
        "description": "MII mode transmit clock output."
      },
      {
        "number": "23",
        "name": "TXEN / TX_EN",
        "type": "input",
        "description": "Transmit enable input in MII mode (TXEN) and in RMII mode (TX_EN)."
      },
      {
        "number": "24",
        "name": "TXD0 / TXD[0]",
        "type": "input",
        "description": "MII mode transmit data input[0] or RMII mode transmit data input[0]; synchronous to TXCLK in MII mode and REF_CLK in RMII mode."
      },
      {
        "number": "25",
        "name": "TXD1 / TXD[1]",
        "type": "input",
        "description": "MII mode transmit data input[1] or RMII mode transmit data input[1]; synchronous to TXCLK in MII mode and REF_CLK in RMII mode."
      },
      {
        "number": "26",
        "name": "TXD2",
        "type": "input",
        "description": "MII mode transmit data input[2]; has no effect when TXEN is de-asserted."
      },
      {
        "number": "27",
        "name": "TXD3",
        "type": "input",
        "description": "MII mode transmit data input[3]; has no effect when TXEN is de-asserted."
      },
      {
        "number": "28",
        "name": "COL / CONFIG0",
        "type": "bidirectional",
        "description": "MII mode collision detect output; in config mode the pull-up/pull-down is latched as CONFIG0 at power-up/reset."
      },
      {
        "number": "29",
        "name": "CRS / CONFIG1",
        "type": "bidirectional",
        "description": "MII mode carrier sense output; in config mode the pull-up/pull-down is latched as CONFIG1 at power-up/reset."
      },
      {
        "number": "30",
        "name": "LED0 / NWAYEN",
        "type": "bidirectional",
        "description": "Programmable LED0 output (link/activity per register 1Eh bits [15:14], internal pull-up); latched as auto-negotiation enable (register 0h bit 12) at power-up/reset."
      },
      {
        "number": "31",
        "name": "LED1 / SPEED",
        "type": "bidirectional",
        "description": "Programmable LED1 output (speed or activity per register 1Eh bits [15:14], internal pull-up); latched as SPEED (pull-up = 100Mbps, pull-down = 10Mbps) at power-up/reset."
      },
      {
        "number": "32",
        "name": "RST#",
        "type": "input",
        "description": "Chip reset, active low."
      },
      {
        "number": "33",
        "name": "PADDLE",
        "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 exposed paddle is printed as 'PADDLE GND' with no pin number in the datasheet; 'PADDLE' is used ; The MPN is KSZ8041NLI-TR. The datasheet ordering table lists KSZ8041NLI (-40°C to 85°C, 32-pin MLF, ; The pin configuration diagram on page 8 is an image and is not in the extracted text. The pin number",
          "exposed pad 33 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint",
          "1/33 pins cited to the wrong page (name found elsewhere): ['8:XO@p9']"
        ],
        "pages_sent": 23,
        "cost_usd": 0.0967,
        "at": "2026-10-17T22:44:58"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586172114378633216",
        "pages": 45,
        "sha256": "ffd72edb4b1abd53",
        "source_tier": "lcsc"
      },
      "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": "ksz8041nli-tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.875
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ksz8041nli-tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.875
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a08e09f40a978eca35e2ab1e44a58435f5377beb6cb4bb1528441df30b555fb5",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "QFN-32-EP(5x5)",
      "Category": "Interface",
      "Pins": "33"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "ffd72edb4b1abd53129e0cba372e4f33cb11c86bdf7fc5770e92503fe9b6ce06",
      "rows": [
        {
          "name": "Supply Voltage (VDDPLL_1.8)",
          "symbol": "VDDPLL_1.8",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 2.4,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage (VDDIO_3.3, VDDA_3.3)",
          "symbol": "VDDIO_3.3, VDDA_3.3",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage (all inputs)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (all outputs)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "soldering, 10sec.",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Ts",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "ESD Rating",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage (VDDIO_3.3, VDDA_3.3) operating",
          "symbol": "VDDIO_3.3, VDDA_3.3",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.135,
          "typ": null,
          "max": 3.465,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJ Max",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Supply Current 100Base-TX",
          "symbol": "IDD1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 53,
          "conditions": "Chip only (no transformer); full-duplex traffic @ 100% utilization",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Supply Current 10Base-T",
          "symbol": "IDD2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 38,
          "conditions": "Chip only (no transformer); full-duplex traffic @ 100% utilization",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Supply Current Power Saving Mode",
          "symbol": "IDD3",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 32,
          "conditions": "Ethernet cable disconnected (reg. 1F.10 = 1)",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Supply Current Power Down Mode",
          "symbol": "IDD4",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "Software power down (reg. 0.11 = 1)",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Input High Voltage (TTL)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Input Low Voltage (TTL)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Input Current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "µA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "VIN = GND ~ VDDIO",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Output High Voltage (TTL)",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": null,
          "conditions": "IOH = -4mA",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Output Low Voltage (TTL)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL = 4mA",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Output Tri-State Leakage",
          "symbol": "|Ioz|",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Peak Differential Output Voltage (100Base-TX)",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 0.95,
          "typ": null,
          "max": 1.05,
          "conditions": "100Ω termination across differential output",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Imbalance (100Base-TX)",
          "symbol": "VIMB",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "100Ω termination across differential output",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Rise/Fall Time (100Base-TX)",
          "symbol": "tr, tf",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 3,
          "max": 5,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Rise/Fall Time Imbalance (100Base-TX)",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 0,
          "max": 0.5,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Duty Cycle Distortion (100Base-TX)",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 0.25,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Overshoot (100Base-TX)",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Output Jitter Peak-to-peak (100Base-TX)",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 0.7,
          "max": 1.4,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Reference Voltage of ISET",
          "symbol": "VSET",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.65,
          "max": null,
          "conditions": "",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Peak Differential Output Voltage (10Base-T)",
          "symbol": "VP",
          "kind": "electrical",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": 2.8,
          "conditions": "100Ω termination across differential output",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Jitter Added (10Base-T)",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 3.5,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Rise/Fall Time (10Base-T)",
          "symbol": "tr, tf",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Squelch Threshold (10Base-T)",
          "symbol": "VSQ",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 400,
          "max": null,
          "conditions": "5MHz square wave",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "TXC period",
          "symbol": "tP",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 400,
          "max": null,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "TXC pulse width low",
          "symbol": "tWL",
          "kind": "timing",
          "unit": "ns",
          "min": 200,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "TXC pulse width high",
          "symbol": "tWH",
          "kind": "timing",
          "unit": "ns",
          "min": 200,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "COL (SQE) delay after TXEN de-asserted",
          "symbol": "tSQE",
          "kind": "timing",
          "unit": "us",
          "min": null,
          "typ": null,
          "max": 2.5,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "COL (SQE) pulse duration",
          "symbol": "tSQEP",
          "kind": "timing",
          "unit": "us",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ksz8041nli-tr"
  ],
  "discovery_pitch": "KSZ8041NLI-TR (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ksz8041nli-tr.kicad_sym",
    "ksz8041nli-tr.kicad_mod",
    "ksz8041nli-tr.glb",
    "ksz8041nli-tr.step",
    "ksz8041nli-tr.lbr",
    "docs/hero.png",
    "docs/ksz8041nli-tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ksz8041nli-tr-hero.glb",
    "ksz8041nli-tr-hero.overlay.json",
    "ksz8041nli-tr-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}