KSZ9031RNXCC

{
  "schema_version": 1,
  "type": "component",
  "slug": "ksz9031rnxcc",
  "title": "KSZ9031RNXCC",
  "brief": "Microchip Tech Ethernet ICs, QFN-48-EP(7x7). 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",
    "communication interface chip-uart-485-232",
    "ksz9031rnxcc",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "KSZ9031RNXCC",
    "manufacturer": "Microchip Tech",
    "package": "QFN-48-EP(7x7)",
    "pin_count": 49,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Ethernet ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0786c663661274a27fb7e91327e7d41a.pdf",
    "parts": {
      "symbol": "ksz9031rnxcc.kicad_sym",
      "footprint": "ksz9031rnxcc.kicad_mod",
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      "model_3d_step": "ksz9031rnxcc-etched.step",
      "model_3d_step_plain": "ksz9031rnxcc.step",
      "lbr": "ksz9031rnxcc.lbr"
    },
    "distributor_links": {
      "lcsc": "C461575",
      "digikey": "KSZ9031RNXCC-ND",
      "mouser": "998-KSZ9031RNXCC"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T06:16:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "KSZ9031RNXCC-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "998-KSZ9031RNXCC",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AVDDH",
        "type": "power_in",
        "description": "Analog VDD for the transceiver at 3.3V or 2.5V, commercial temperature only."
      },
      {
        "number": "2",
        "name": "TXRXP_A",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 0 positive signal, carrying BI_DA+ in 1000BASE-T MDI mode and TX+ or RX+ in 10/100 mode."
      },
      {
        "number": "3",
        "name": "TXRXM_A",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 0 negative signal, carrying BI_DA- in 1000BASE-T MDI mode and TX- or RX- in 10/100 mode."
      },
      {
        "number": "4",
        "name": "AVDDL",
        "type": "power_in",
        "description": "Analog VDD of 1.2V for the transceiver core."
      },
      {
        "number": "5",
        "name": "TXRXP_B",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 1 positive signal, carrying BI_DB+ in 1000BASE-T MDI mode and RX+ or TX+ in 10/100 mode."
      },
      {
        "number": "6",
        "name": "TXRXM_B",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 1 negative signal, carrying BI_DB- in 1000BASE-T MDI mode and RX- or TX- in 10/100 mode."
      },
      {
        "number": "7",
        "name": "TXRXP_C",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 2 positive signal, carrying BI_DC+ in 1000BASE-T MDI mode and not used in 10/100 mode."
      },
      {
        "number": "8",
        "name": "TXRXM_C",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 2 negative signal, carrying BI_DC- in 1000BASE-T MDI mode and not used in 10/100 mode."
      },
      {
        "number": "9",
        "name": "AVDDL",
        "type": "power_in",
        "description": "Analog VDD of 1.2V for the transceiver core."
      },
      {
        "number": "10",
        "name": "TXRXP_D",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 3 positive signal, carrying BI_DD+ in 1000BASE-T MDI mode and not used in 10/100 mode."
      },
      {
        "number": "11",
        "name": "TXRXM_D",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 3 negative signal, carrying BI_DD- in 1000BASE-T MDI mode and not used in 10/100 mode."
      },
      {
        "number": "12",
        "name": "AVDDH",
        "type": "power_in",
        "description": "Analog VDD for the transceiver at 3.3V or 2.5V, commercial temperature only."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "Not bonded; may be connected to digital ground for footprint compatibility with the KSZ9021RN."
      },
      {
        "number": "14",
        "name": "DVDDL",
        "type": "power_in",
        "description": "Digital VDD of 1.2V for the core."
      },
      {
        "number": "15",
        "name": "LED2/PHYAD1",
        "type": "bidirectional",
        "description": "Programmable LED2 output, with the pull-up or pull-down value latched as PHYAD[1] at power-up or reset."
      },
      {
        "number": "16",
        "name": "DVDDH",
        "type": "power_in",
        "description": "Digital VDD I/O at 3.3V, 2.5V, or 1.8V."
      },
      {
        "number": "17",
        "name": "LED1/PHYAD0/PME_N1",
        "type": "bidirectional",
        "description": "Programmable LED1 output, with the voltage latched as PHYAD[0] at power-up or reset; PME_N output needs an external pull-up to DVDDH of 1.0 kΩ to 4.7 kΩ."
      },
      {
        "number": "18",
        "name": "DVDDL",
        "type": "power_in",
        "description": "Digital VDD of 1.2V for the core."
      },
      {
        "number": "19",
        "name": "TXD0",
        "type": "input",
        "description": "RGMII transmit data bit 0 input (TD0)."
      },
      {
        "number": "20",
        "name": "TXD1",
        "type": "input",
        "description": "RGMII transmit data bit 1 input (TD1)."
      },
      {
        "number": "21",
        "name": "TXD2",
        "type": "input",
        "description": "RGMII transmit data bit 2 input (TD2)."
      },
      {
        "number": "22",
        "name": "TXD3",
        "type": "input",
        "description": "RGMII transmit data bit 3 input (TD3)."
      },
      {
        "number": "23",
        "name": "DVDDL",
        "type": "power_in",
        "description": "Digital VDD of 1.2V for the core."
      },
      {
        "number": "24",
        "name": "GTX_CLK",
        "type": "input",
        "description": "RGMII transmit reference clock input (TXC)."
      },
      {
        "number": "25",
        "name": "TX_EN",
        "type": "input",
        "description": "RGMII transmit control input (TX_CTL)."
      },
      {
        "number": "26",
        "name": "DVDDL",
        "type": "power_in",
        "description": "Digital VDD of 1.2V for the core."
      },
      {
        "number": "27",
        "name": "RXD3/MODE3",
        "type": "bidirectional",
        "description": "RGMII receive data bit 3 output (RD3); the pull-up or pull-down value is latched as MODE3 at power-up or reset."
      },
      {
        "number": "28",
        "name": "RXD2/MODE2",
        "type": "bidirectional",
        "description": "RGMII receive data bit 2 output (RD2); the pull-up or pull-down value is latched as MODE2 at power-up or reset."
      },
      {
        "number": "29",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "30",
        "name": "DVDDL",
        "type": "power_in",
        "description": "Digital VDD of 1.2V for the core."
      },
      {
        "number": "31",
        "name": "RXD1/MODE1",
        "type": "bidirectional",
        "description": "RGMII receive data bit 1 output (RD1); the pull-up or pull-down value is latched as MODE1 at power-up or reset."
      },
      {
        "number": "32",
        "name": "RXD0/MODE0",
        "type": "bidirectional",
        "description": "RGMII receive data bit 0 output (RD0); the pull-up or pull-down value is latched as MODE0 at power-up or reset."
      },
      {
        "number": "33",
        "name": "RX_DV/CLK125_EN",
        "type": "bidirectional",
        "description": "RGMII receive control output (RX_CTL); latched as CLK125_NDO output enable at power-up or reset."
      },
      {
        "number": "34",
        "name": "DVDDH",
        "type": "power_in",
        "description": "Digital VDD I/O at 3.3V, 2.5V, or 1.8V."
      },
      {
        "number": "35",
        "name": "RX_CLK/PHYAD2",
        "type": "bidirectional",
        "description": "RGMII receive reference clock output (RXC); the pull-up or pull-down value is latched as PHYAD[2] at power-up or reset."
      },
      {
        "number": "36",
        "name": "MDC",
        "type": "input",
        "description": "Management data clock input, the reference clock for MDIO (Pin 37), with internal pull-up."
      },
      {
        "number": "37",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "Management data input and output, synchronous to MDC, requiring an external pull-up to DVDDH of 1.0 kΩ to 4.7 kΩ."
      },
      {
        "number": "38",
        "name": "INT_N/PME_N2",
        "type": "output",
        "description": "Programmable interrupt output, active low by default; PME_N option requires an external pull-up to DVDDH of 1.0 kΩ to 4.7 kΩ."
      },
      {
        "number": "39",
        "name": "DVDDL",
        "type": "power_in",
        "description": "Digital VDD of 1.2V for the core."
      },
      {
        "number": "40",
        "name": "DVDDH",
        "type": "power_in",
        "description": "Digital VDD I/O at 3.3V, 2.5V, or 1.8V."
      },
      {
        "number": "41",
        "name": "CLK125_NDO/LED_MODE",
        "type": "bidirectional",
        "description": "125 MHz reference clock output for the MAC; the pull-up or pull-down value is latched as LED_MODE at power-up or reset."
      },
      {
        "number": "42",
        "name": "RESET_N",
        "type": "input",
        "description": "Chip reset, active low, with internal pull-up; hardware strap-ins are latched on the rising edge of RESET_N."
      },
      {
        "number": "43",
        "name": "LDO_O",
        "type": "output",
        "description": "On-chip 1.2V LDO controller output that drives the gate of a P-channel MOSFET; this pin should never be driven externally."
      },
      {
        "number": "44",
        "name": "AVDDL_PLL",
        "type": "power_in",
        "description": "Analog VDD of 1.2V for the PLL."
      },
      {
        "number": "45",
        "name": "XO",
        "type": "output",
        "description": "25 MHz crystal feedback; a no connect if an oscillator or external clock source is used."
      },
      {
        "number": "46",
        "name": "XI",
        "type": "input",
        "description": "Crystal, oscillator, or external clock input at 25 MHz with ±50 ppm tolerance."
      },
      {
        "number": "47",
        "name": "NC",
        "type": "unconnected",
        "description": "Not bonded; may be connected to AVDDH power for footprint compatibility with the KSZ9021RN."
      },
      {
        "number": "48",
        "name": "ISET",
        "type": "bidirectional",
        "description": "Sets the transmit output level; connect a 12.1 kΩ 1% resistor to ground on this pin."
      },
      {
        "number": "49",
        "name": "P_GND",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
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        "primary_model": "claude-haiku-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "cost_usd": 0.0592,
        "at": "2026-10-27T06:15:59"
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        "pages": 79,
        "sha256": "f7c402264e7b9b65",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "QFN-48-EP(7x7)",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "49"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "f7c402264e7b9b65e09f88242a0e8269e4c01e051cd515dbdbabb66dfff4f408",
      "rows": [
        {
          "name": "Supply voltage DVDDL, AVDDL, AVDDL_PLL absolute maximum",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 1.8,
          "conditions": "DVDDL, AVDDL, AVDDL_PLL",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage AVDDH absolute maximum",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
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        },
        {
          "name": "Supply voltage DVDDH absolute maximum",
          "symbol": "VIN",
          "kind": "absolute_maximum",
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          "name": "Input voltage absolute maximum",
          "symbol": "",
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        },
        {
          "name": "Output voltage absolute maximum",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
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          "name": "Storage temperature",
          "symbol": "TS",
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          "min": -55,
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          "conditions": "",
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        {
          "name": "Lead temperature soldering",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "soldering, 10s",
          "source_page": 52,
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        },
        {
          "name": "Supply voltage DVDDL, AVDDL, AVDDL_PLL operating",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.14,
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          "max": 1.38,
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          "source_page": 52,
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        {
          "name": "Supply voltage AVDDH @ 3.3V operating",
          "symbol": "VIN",
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          "source_page": 52,
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          "name": "Supply voltage DVDDH @ 3.3V operating",
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          "source_page": 52,
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          "source_page": 52,
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        },
        {
          "name": "Ambient temperature commercial",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "TA Commercial: KSZ9031RNXC",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Maximum junction temperature",
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          "kind": "recommended_operating",
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          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "TJ max.",
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        },
        {
          "name": "Thermal resistance junction-to-ambient",
          "symbol": "ΘJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 36.34,
          "max": null,
          "conditions": "",
          "source_page": 52,
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        {
          "name": "Thermal resistance junction-to-case",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 9.47,
          "max": null,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
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    "email": "[email protected]"
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