LM567M

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm567m",
  "title": "LM567M",
  "brief": "HGSEMI Audio Interface ICs, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "lm567m"
  ],
  "component": {
    "mpn": "LM567M",
    "manufacturer": "HGSEMI",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "Audio Interface ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c9a601a2a3723588a4d93fd4f53974db.pdf",
    "parts": {
      "symbol": "lm567m.kicad_sym",
      "footprint": "lm567m.kicad_mod",
      "model_3d": "lm567m-etched.glb",
      "model_3d_plain": "lm567m.glb",
      "model_3d_step": "lm567m-etched.step",
      "model_3d_step_plain": "lm567m.step",
      "lbr": "lm567m.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "OUTPUT_FILTER",
        "type": "passive",
        "description": "Output filter capacitor connection (C2). Sets the low-pass filter time constant that removes carrier feedthrough from the I-detector output; larger C2 narrows the detection bandwidth."
      },
      {
        "number": "2",
        "name": "LOOP_FILTER",
        "type": "passive",
        "description": "Loop filter capacitor connection (C3). Sets the PLL loop bandwidth and hence the detection bandwidth of the tone decoder."
      },
      {
        "number": "3",
        "name": "INPUT",
        "type": "input",
        "description": "Signal input to the phase detector. Input impedance ~20 kΩ; smallest detectable input voltage typically 20 mVrms (IL = 100 mA). AC-couple the incoming tone signal here."
      },
      {
        "number": "4",
        "name": "V+",
        "type": "power_in",
        "description": "Positive supply voltage. Operating range 4.75 V to 9.0 V (absolute max 9 V). Typical quiescent current 6 mA; activated current ~11 mA with RL = 20 kΩ."
      },
      {
        "number": "5",
        "name": "TIMING_RESISTOR",
        "type": "passive",
        "description": "External VCO timing resistor (R1) connection. Together with C1 on pin 6 sets the free-running center frequency f0 ≈ 1/(1.1·R1·C1). Range supports f0 from 0.01 Hz to 500 kHz."
      },
      {
        "number": "6",
        "name": "TIMING_CAPACITOR",
        "type": "passive",
        "description": "External VCO timing capacitor (C1) connection. With R1 on pin 5 sets the VCO free-running center frequency."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. All external timing/filter components and the output load return to this pin."
      },
      {
        "number": "8",
        "name": "OUTPUT",
        "type": "output",
        "description": "Open-collector logic-compatible output. Pulls to ground (saturated NPN, VOL ~0.2 V at 30 mA, 0.6 V at 100 mA) when an in-band tone is detected; requires an external pull-up (RL, e.g. 20 kΩ). Absolute max V8 = 15 V, 100 mA sink capability."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/c9a601a2a3723588a4d93fd4f53974db.pdf",
        "pages": 12,
        "sha256": "47a007a297187f96",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "lm567m.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm567m-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "774c775a7b749146b88eedfd37da80d836765b3cea71dad408447f60304182ae",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm567m"
  ],
  "discovery_pitch": "LM567M (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm567m.kicad_sym",
    "lm567m.kicad_mod",
    "lm567m.glb",
    "lm567m.step",
    "lm567m-etched.step",
    "lm567m.lbr",
    "docs/hero.png",
    "docs/lm567m-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "LM567MM/TR",
      "kind": "packaging"
    },
    {
      "mpn": "LM567MCM/TR",
      "kind": "packaging"
    },
    {
      "mpn": "LM567MN",
      "kind": "packaging"
    },
    {
      "mpn": "LM567MCN",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T17:04:46.563Z"
}