DP83TC814RRHARQ1

{
  "schema_version": 1,
  "type": "component",
  "slug": "dp83tc814rrharq1",
  "title": "DP83TC814RRHARQ1",
  "brief": "Texas Instruments Ethernet ICs, VQFN-36(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "communication interface chip-uart-485-232",
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  "component": {
    "mpn": "DP83TC814RRHARQ1",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-36(6x6)",
    "pin_count": 37,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Ethernet ICs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/dp83tc814r-q1",
    "parts": {
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      "footprint": "dp83tc814rrharq1.kicad_mod",
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      "lbr": "dp83tc814rrharq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C3225815",
      "digikey": "296-DP83TC814RRHARQ1TR-ND",
      "mouser": "595-DP83TC814RRHARQ1"
    },
    "distributor_check": {
      "checked_at": "2026-11-02T17:05:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-DP83TC814RRHARQ1TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-DP83TC814RRHARQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "MDC",
        "type": "input",
        "description": "Management data clock for MDIO serial management; maximum clock rate 20MHz with no minimum rate, and it may be asynchronous to the MAC clocks."
      },
      {
        "number": "2",
        "name": "INT_N",
        "type": "output",
        "description": "Active-low interrupt output with a weak internal pull-up; it can alternatively be used as a power-down input, and the pin is powered from VDDIO."
      },
      {
        "number": "3",
        "name": "RESET_N",
        "type": "input",
        "description": "Active-low reset input with an internal pull-up; it must be held low for at least 1µs to force a reset and straps are resampled on release."
      },
      {
        "number": "4",
        "name": "XO",
        "type": "output",
        "description": "Crystal reference clock output used only with a crystal; it must be left floating when a CMOS-level oscillator drives XI."
      },
      {
        "number": "5",
        "name": "XI",
        "type": "input",
        "description": "Reference clock input: 25MHz crystal or oscillator for MII/RGMII (50MHz CMOS oscillator in RMII slave mode), with a 100Ω series resistor when a crystal is used."
      },
      {
        "number": "6",
        "name": "LED_1/GPIO_1",
        "type": "bidirectional",
        "description": "Link-status LED that flashes on TX/RX activity, selectable as an LED or clock output via strap/register; the pin is in the VDDIO voltage domain."
      },
      {
        "number": "7",
        "name": "VDDA",
        "type": "power_in",
        "description": "Core supply pin at 3.3V (2.97V to 3.63V); a 0.1µF ceramic decoupling capacitor is recommended."
      },
      {
        "number": "8",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave floating."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect pin on this package; leave floating."
      },
      {
        "number": "10",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave floating."
      },
      {
        "number": "11",
        "name": "VDDA",
        "type": "power_in",
        "description": "Core supply pin at 3.3V (2.97V to 3.63V); a 0.1µF ceramic decoupling capacitor is recommended."
      },
      {
        "number": "12",
        "name": "TRD_P",
        "type": "bidirectional",
        "description": "Positive side of the 100BASE-T1 differential transmit and receive pair, which connects to the MDI through the coupling network with a 100Ω differential termination."
      },
      {
        "number": "13",
        "name": "TRD_M",
        "type": "bidirectional",
        "description": "Negative side of the 100BASE-T1 differential transmit and receive pair, which connects to the MDI through the coupling network with a 100Ω differential termination."
      },
      {
        "number": "14",
        "name": "RX_ER",
        "type": "output",
        "description": "Receive error output, synchronized to RX_CLK in MII mode and the reference clock in RMII mode; it is an RGMII input when the RGMII interface is selected."
      },
      {
        "number": "15",
        "name": "RX_DV/CRS_DV/RX_CTRL",
        "type": "output",
        "description": "Multiplexed receive data valid (MII), carrier sense/data valid (RMII) or receive control (RGMII) output, selected by register 0x0551; it is in the VDDMAC domain."
      },
      {
        "number": "16",
        "name": "CLKOUT/GPIO_2",
        "type": "bidirectional",
        "description": "25MHz reference clock output (50MHz in RMII slave mode), also selectable as LED or GPIO; the pin is in the VDDMAC domain."
      },
      {
        "number": "17",
        "name": "GND_ESC",
        "type": "passive",
        "description": "Optional ground escape pin that may be connected to ground for PCB layout; it cannot replace the DAP power ground connection and may be left open if unused."
      },
      {
        "number": "18",
        "name": "GND_ESC",
        "type": "passive",
        "description": "Optional ground escape pin that may be connected to ground for PCB layout; it cannot replace the DAP power ground connection and may be left open if unused."
      },
      {
        "number": "19",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave floating."
      },
      {
        "number": "20",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave floating."
      },
      {
        "number": "21",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect pin on this package; leave floating."
      },
      {
        "number": "22",
        "name": "VDDMAC",
        "type": "power_in",
        "description": "Optional MAC interface supply at 1.8V, 2.5V or 3.3V that may differ from VDDIO; it must be tied to VDDIO when a separate rail is not needed."
      },
      {
        "number": "23",
        "name": "RX_D3",
        "type": "output",
        "description": "Receive data bit 3 in MII/RGMII mode, RX_D[1:0] in RMII mode, and it outputs a 50MHz reference clock when RMII master mode is strapped; it is in the VDDMAC domain."
      },
      {
        "number": "24",
        "name": "RX_D2",
        "type": "output",
        "description": "Receive data bit 2 for MII and RGMII modes, unused in RMII slave mode, and it is in the VDDMAC domain."
      },
      {
        "number": "25",
        "name": "RX_D1",
        "type": "output",
        "description": "Receive data bit 1 for MII and RGMII modes and RMII receive data bit 1; it is in the VDDMAC domain."
      },
      {
        "number": "26",
        "name": "RX_D0",
        "type": "output",
        "description": "Receive data bit 0 for all MAC modes; it is in the VDDMAC domain."
      },
      {
        "number": "27",
        "name": "RX_CLK",
        "type": "output",
        "description": "Receive clock providing a 25MHz reference in MII and RGMII modes; it is not used in RMII mode."
      },
      {
        "number": "28",
        "name": "TX_CLK",
        "type": "bidirectional",
        "description": "Transmit clock that is a 25MHz output in MII mode and is supplied by the MAC as an input in RGMII mode, requiring a 25MHz clock."
      },
      {
        "number": "29",
        "name": "TX_EN/TX_CTRL",
        "type": "input",
        "description": "Transmit enable in MII/RMII modes or transmit control in RGMII mode, where TX_EN is sampled before the TX_CLK rising edge."
      },
      {
        "number": "30",
        "name": "TX_D3",
        "type": "input",
        "description": "Transmit data bit 3 sampled before TX_CLK rising edge in MII and RGMII modes; unused in RMII slave mode."
      },
      {
        "number": "31",
        "name": "TX_D2",
        "type": "input",
        "description": "Transmit data bit 2 sampled before TX_CLK rising edge in MII and RGMII modes; unused in RMII slave mode."
      },
      {
        "number": "32",
        "name": "TX_D1",
        "type": "input",
        "description": "Transmit data bit 1 sampled before the TX_CLK (MII/RGMII) or reference clock (RMII) rising edge; it is in the VDDMAC domain."
      },
      {
        "number": "33",
        "name": "TX_D0",
        "type": "input",
        "description": "Transmit data bit 0 sampled before the TX_CLK (MII/RGMII) or reference clock (RMII) rising edge; it is in the VDDMAC domain."
      },
      {
        "number": "34",
        "name": "VDDIO",
        "type": "power_in",
        "description": "IO supply at 1.8V, 2.5V or 3.3V (1.62V to 3.63V); decoupling with ferrite bead, 0.47µF and 0.01µF ceramic capacitors is recommended."
      },
      {
        "number": "35",
        "name": "LED_0/GPIO_0",
        "type": "bidirectional",
        "description": "Link status LED that can also be selected as an LED or clock output by register; it is in the VDDIO domain and has an internal pull-down."
      },
      {
        "number": "36",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "Bidirectional management data line that requires a pull-up to VDDIO (2.2kΩ to 9kΩ recommended), needed for MDIO/MDC access for Open Alliance compliance."
      },
      {
        "number": "37",
        "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 datasheet's pin table covers the 36-pin RHA VQFN for the DP83TC814R-Q1 variant, which matches th",
          "2/37 pins cited to the wrong page (name found elsewhere): ['4:XO@p7', '5:XI@p7']"
        ],
        "pages_sent": 80,
        "cost_usd": 0.1003,
        "at": "2026-11-02T17:05:25"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/dp83tc814r-q1",
        "pages": 161,
        "sha256": "d1fe2a72e0f7d7e6",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 37,
        "described": 37,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "sha256": "4534f616acbbc7a13e587b2fd670b51c8075902d7bea72492617ac4da56d38f8",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VQFN-36(6x6)",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "37"
    }
  },
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  "author": {
    "name": "Ray"
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