ESP8684H4X

{
  "schema_version": 1,
  "type": "component",
  "slug": "esp8684h4x",
  "title": "ESP8684H4X",
  "brief": "Espressif Systems WiFi Modules, QFN-24(4x4). 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",
    "iot-communication modules",
    "esp8684h4x",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "ESP8684H4X",
    "manufacturer": "Espressif Systems",
    "package": "QFN-24(4x4)",
    "pin_count": 25,
    "category": "IoT/Communication Modules",
    "subcategory": "WiFi Modules",
    "datasheet": "https://www.espressif.com/sites/default/files/documentation/esp8684_datasheet_en.pdf",
    "parts": {
      "symbol": "esp8684h4x.kicad_sym",
      "footprint": "esp8684h4x.kicad_mod",
      "model_3d": "esp8684h4x-hero.glb",
      "model_3d_plain": "esp8684h4x-etched.glb",
      "model_3d_step": "esp8684h4x-etched.step",
      "model_3d_step_plain": "esp8684h4x.step",
      "lbr": "esp8684h4x.lbr"
    },
    "distributor_links": {
      "lcsc": "C48929155",
      "mouser": "356-ESP8684H4X"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T22:57:09Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 977 calls left today"
      },
      "mouser": {
        "pn": "356-ESP8684H4X",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "ANT",
        "type": "bidirectional",
        "description": "RF input and output pin connected to the antenna."
      },
      {
        "number": "2",
        "name": "VDDA3P3",
        "type": "power_in",
        "description": "Input power supply for the analog power domain."
      },
      {
        "number": "3",
        "name": "VDDA3P3",
        "type": "power_in",
        "description": "Input power supply for the analog power domain."
      },
      {
        "number": "4",
        "name": "GPIO0",
        "type": "bidirectional",
        "description": "Multiplexed IO powered by VDD3P3_RTC with IO MUX function GPIO0 and analog function ADC1_CH0; default drive strength is 20 mA."
      },
      {
        "number": "5",
        "name": "GPIO1",
        "type": "bidirectional",
        "description": "Multiplexed IO powered by VDD3P3_RTC with IO MUX function GPIO1 and analog function ADC1_CH1; default drive strength is 20 mA."
      },
      {
        "number": "6",
        "name": "GPIO2",
        "type": "bidirectional",
        "description": "Multiplexed IO powered by VDD3P3_RTC with input enabled at reset, IO MUX functions GPIO2 and FSPIQ, and analog function ADC1_CH2; default drive strength is 20 mA."
      },
      {
        "number": "7",
        "name": "CHIP_EN",
        "type": "input",
        "description": "High enables the chip (powered up) and low disables it (powered down); do not leave this pin floating."
      },
      {
        "number": "8",
        "name": "GPIO3",
        "type": "bidirectional",
        "description": "Multiplexed IO powered by VDD3P3_RTC with input enabled at reset, IO MUX function GPIO3 and analog function ADC1_CH3; default drive strength is 20 mA."
      },
      {
        "number": "9",
        "name": "MTMS",
        "type": "bidirectional",
        "description": "Multiplexed IO powered by VDD3P3_RTC with JTAG test mode select (MTMS) and analog function ADC1_CH4; default drive strength is 20 mA."
      },
      {
        "number": "10",
        "name": "MTDI",
        "type": "bidirectional",
        "description": "Multiplexed IO powered by VDD3P3_RTC with JTAG test data input (MTDI); default drive strength is 20 mA."
      },
      {
        "number": "11",
        "name": "VDD3P3_RTC",
        "type": "power_in",
        "description": "Input power supply for the RTC and part of the digital power domains, including RTC IO pins."
      },
      {
        "number": "12",
        "name": "MTCK",
        "type": "bidirectional",
        "description": "Multiplexed IO powered by VDD3P3_CPU with JTAG test clock (MTCK); default drive strength is 20 mA."
      },
      {
        "number": "13",
        "name": "MTDO",
        "type": "bidirectional",
        "description": "Multiplexed IO powered by VDD3P3_CPU with JTAG test data output (MTDO); default drive strength is 20 mA."
      },
      {
        "number": "14",
        "name": "GPIO8",
        "type": "bidirectional",
        "description": "Multiplexed digital IO powered by VDD3P3_CPU with input enabled at reset and IO MUX function GPIO8; default drive strength is 20 mA."
      },
      {
        "number": "15",
        "name": "GPIO9",
        "type": "bidirectional",
        "description": "Multiplexed digital IO powered by VDD3P3_CPU with input enabled and internal weak pull-up enabled after reset; default drive strength is 20 mA."
      },
      {
        "number": "16",
        "name": "GPIO10",
        "type": "bidirectional",
        "description": "Multiplexed digital IO powered by VDD3P3_CPU with IO MUX functions GPIO10 and FSPICS0; default drive strength is 20 mA."
      },
      {
        "number": "17",
        "name": "VDD3P3_CPU",
        "type": "power_in",
        "description": "Input power supply for the digital power domain, which powers the digital IO pins."
      },
      {
        "number": "18",
        "name": "GPIO18",
        "type": "bidirectional",
        "description": "Multiplexed digital IO powered by VDD3P3_CPU with IO MUX function GPIO18; default drive strength is 20 mA."
      },
      {
        "number": "19",
        "name": "U0RXD",
        "type": "bidirectional",
        "description": "UART0 receive data pin, powered by VDD3P3_CPU, with input enabled and internal weak pull-up enabled; default drive strength is 20 mA."
      },
      {
        "number": "20",
        "name": "U0TXD",
        "type": "bidirectional",
        "description": "UART0 transmit data pin, powered by VDD3P3_CPU, with output enabled and internal weak pull-up enabled; default drive strength is 20 mA."
      },
      {
        "number": "21",
        "name": "VDDA",
        "type": "power_in",
        "description": "Input power supply for the analog power domain."
      },
      {
        "number": "22",
        "name": "XTAL_N",
        "type": "bidirectional",
        "description": "External clock input/output connected to the chip's crystal or oscillator (negative side of the differential clock)."
      },
      {
        "number": "23",
        "name": "XTAL_P",
        "type": "bidirectional",
        "description": "External clock input/output connected to the chip's crystal or oscillator (positive side of the differential clock)."
      },
      {
        "number": "24",
        "name": "VDDA",
        "type": "power_in",
        "description": "Input power supply for the analog power domain."
      },
      {
        "number": "25",
        "name": "GND",
        "type": "power_in",
        "description": "External ground connection."
      }
    ],
    "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 labels the package QFN24 (4x4 mm), but the pin tables and figure number 25 pins; pin 2; Pins 21 and 24 (VDDA) are typed as Power in Table 2 and Table 8 but as IO in Appendix A. They are re; The datasheet gives no explicit KiCad ERC class for ANT, CHIP_EN, XTAL_N and XTAL_P. Their types wer"
        ],
        "pages_sent": 27,
        "cost_usd": 0.0641,
        "at": "2026-10-27T22:56:47"
      },
      "datasheet": {
        "url": "https://www.espressif.com/sites/default/files/documentation/esp8684_datasheet_en.pdf",
        "pages": 60,
        "sha256": "5d5e6894fbcd9ab5",
        "source_tier": "mfr"
      },
      "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"
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "6a80ad90e9b6d70de84eb691b11517cce736a60081fc31eb3fcb9b4362007122",
        "checked": "2026-10-27",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Espressif Systems",
      "Package": "QFN-24(4x4)",
      "Category": "IoT/Communication Modules",
      "Pins": "25"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "5d5e6894fbcd9ab56e4b805369d1ffab53f3df3fae2863ba17b06963a57341f4",
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          "symbol": "Ioutput",
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          "unit": "mA",
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        },
        {
          "name": "Storage temperature",
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          "unit": "°C",
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        {
          "name": "Recommended input voltage",
          "symbol": "VDDA3P3, VDDA, VDD3P3_RTC, VDD3P3_CPU",
          "kind": "recommended_operating",
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        {
          "name": "Cumulative input current",
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        {
          "name": "Ambient temperature",
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        {
          "name": "High-level input current",
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        {
          "name": "Differential nonlinearity (DNL)",
          "symbol": "DNL",
          "kind": "electrical",
          "unit": "LSB",
          "min": -1,
          "typ": null,
          "max": 3,
          "conditions": "ADC with external 100 nF capacitor; DC signal input; ambient 25 °C; Wi-Fi off",
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          "name": "Integral nonlinearity (INL)",
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          "conditions": "ADC with external 100 nF capacitor; DC signal input; ambient 25 °C; Wi-Fi off",
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          "name": "Sampling rate",
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        {
          "name": "Total error ATTEN0 effective measurement range 0 ~ 950",
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        {
          "name": "Total error ATTEN3 effective measurement range 0 ~ 2800",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": -10,
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          "conditions": "ATTEN3, effective measurement range of 0 ~ 2800",
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        {
          "name": "Sensitivity (Bluetooth LE 1 Mbps)",
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