MCP45HV31-104E

{
  "slug": "mcp45hv31-104e",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Digital Potentiometers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "adc-dac-data conversion",
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  "component": {
    "mpn": "MCP45HV31-104E",
    "manufacturer": "Microchip Tech",
    "package": "TSSOP-14",
    "pin_count": 14,
    "category": "ADC/DAC/Data Conversion",
    "subcategory": "Digital Potentiometers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/556468123355b07f5b301e0b9dfefe39.pdf",
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    "distributor_links": {
      "lcsc": "C637114"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T21:39:47Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
        "pn": null,
        "status": "no match"
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    },
    "pins": [
      {
        "number": "1",
        "name": "VL",
        "type": "power_in",
        "description": "Positive digital power supply input, referenced to DGND, specified from 1.8V to 5.5V; a decoupling capacitor to DGND is recommended for maximum performance."
      },
      {
        "number": "2",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input (Schmitt trigger); the device is an I2C slave, so this pin is input-only."
      },
      {
        "number": "3",
        "name": "A1",
        "type": "input",
        "description": "I2C address bit 1 input (Schmitt trigger), latched at POR/BOR; together with A0 it allows up to four devices on one I2C bus."
      },
      {
        "number": "4",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data pin, an open-drain N-channel driver that lets the host read and write the Wiper and TCON registers."
      },
      {
        "number": "5",
        "name": "A0",
        "type": "input",
        "description": "I2C address bit 0 input (Schmitt trigger), latched at POR/BOR; together with A1 it completes the device address."
      },
      {
        "number": "6",
        "name": "WLAT",
        "type": "input",
        "description": "Wiper latch enable: when Low, the received I2C value is transferred from the shift buffer to the Wiper register; when High, the value is held in the shift buffer (SPBUF)."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected to the die; to reduce noise coupling, connect to DGND or VL."
      },
      {
        "number": "8",
        "name": "SHDN",
        "type": "input",
        "description": "Shutdown input (Schmitt trigger) that forces the resistor network terminals into the hardware shutdown state."
      },
      {
        "number": "9",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground reference for the device; VL and the level-shifted digital signals are referenced to this pin."
      },
      {
        "number": "10",
        "name": "V-",
        "type": "power_in",
        "description": "Analog negative potential supply; must be lower than or equal to the DGND pin potential."
      },
      {
        "number": "11",
        "name": "P0B",
        "type": "passive",
        "description": "Potentiometer 0 Terminal B, the zero-scale wiper connection; the voltage must be between V- and V+ and it can carry positive or negative current."
      },
      {
        "number": "12",
        "name": "P0W",
        "type": "passive",
        "description": "Potentiometer 0 wiper (W) terminal; the voltage must be between V- and V+ and it can carry positive or negative current."
      },
      {
        "number": "13",
        "name": "P0A",
        "type": "passive",
        "description": "Potentiometer 0 Terminal A, the full-scale wiper connection; the voltage must be between V- and V+ and it can carry positive or negative current."
      },
      {
        "number": "14",
        "name": "V+",
        "type": "power_in",
        "description": "Analog positive potential supply, which must be at a higher potential than V-; analog operation is specified from 10V to 36V with a maximum of +36V."
      }
    ],
    "provenance": {
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        "primary_model": "claude-haiku-5-5",
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The TSSOP-14 pin table on page 24 is garbled in the extracted text. Pin 1 (VL) was read from the fir; The datasheet specifies the analog supply range as 10V to 36V and the digital range as 1.8V to 5.5V."
        ],
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        "at": "2026-10-28T21:39:30"
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        "pages": 100,
        "sha256": "ab854db7c83242c1",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
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