LM4889MM

{
  "slug": "lm4889mm",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Audio Amplifiers, VSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "amplifiers-comparators",
    "lm4889mm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm4889mm.kicad_sym",
    "lm4889mm.kicad_mod",
    "lm4889mm.glb",
    "lm4889mm.step",
    "lm4889mm.lbr",
    "docs/hero.png",
    "docs/lm4889mm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm4889mm-hero.glb",
    "lm4889mm-hero.overlay.json"
  ],
  "component": {
    "mpn": "LM4889MM",
    "manufacturer": "Texas Instruments",
    "package": "VSSOP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Audio Amplifiers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm4889",
    "parts": {
      "symbol": "lm4889mm.kicad_sym",
      "footprint": "lm4889mm.kicad_mod",
      "model_3d": "lm4889mm-hero.glb",
      "model_3d_plain": "lm4889mm.glb",
      "model_3d_step": "lm4889mm-etched.step",
      "model_3d_step_plain": "lm4889mm.step",
      "lbr": "lm4889mm.lbr"
    },
    "distributor_links": {
      "lcsc": 129344,
      "digikey": "LM4889MMTR-ND",
      "mouser": "926-LM4889MM"
    },
    "distributor_check": {
      "checked_at": "2026-10-03T06:23:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM4889MMTR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LM4889MM",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SHUTDOWN",
        "type": "input",
        "description": "Active-low shutdown input that turns off the amplifier bias circuitry when driven low (input low below 0.4V max, input high 1.2V min at VDD = 5V)."
      },
      {
        "number": "2",
        "name": "BYPASS",
        "type": "passive",
        "description": "Half-supply (VDD/2) bypass node that needs an external capacitor CB (1.0 µF recommended) for half-supply filtering and turn-on pop performance."
      },
      {
        "number": "3",
        "name": "+IN",
        "type": "input",
        "description": "Non-inverting input of the first amplifier."
      },
      {
        "number": "4",
        "name": "-IN",
        "type": "input",
        "description": "Inverting input of the first amplifier, where the Ri/Rf resistors set differential gain AVD = 2*(Rf/Ri)."
      },
      {
        "number": "5",
        "name": "Vo1",
        "type": "output",
        "description": "First amplifier output, one side of the bridge-tied load, 180° out of phase with Vo2 and biased at VDD/2."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply, operating range 2.2V to 5.5V (absolute maximum 6.0V), with a bypass capacitor placed close to the pin."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "8",
        "name": "Vo2",
        "type": "output",
        "description": "Second amplifier output, the other side of the bridge-tied load, an inverted unity-gain copy of Vo1 biased at VDD/2."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 31,
        "cost_usd": 0.5882,
        "at": "2026-10-03T06:23:26"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm4889",
        "pages": 31,
        "sha256": "1142703d6502f7cd",
        "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"
    }
  }
}