component
LM4889MM
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Texas Instruments Audio Amplifiers, VSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# LM4889MM++**Texas Instruments** · Audio Amplifiers · VSSOP-8++LM4889MM from Texas Instruments, in a VSSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | SHUTDOWN | input | 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). |+| 2 | BYPASS | passive | 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. |+| 3 | +IN | input | Non-inverting input of the first amplifier. |+| 4 | -IN | input | Inverting input of the first amplifier, where the Ri/Rf resistors set differential gain AVD = 2*(Rf/Ri). |+| 5 | Vo1 | output | First amplifier output, one side of the bridge-tied load, 180° out of phase with Vo2 and biased at VDD/2. |+| 6 | VDD | power_in | Positive supply, operating range 2.2V to 5.5V (absolute maximum 6.0V), with a bypass capacitor placed close to the pin. |+| 7 | GND | power_in | Ground. |+| 8 | Vo2 | output | Second amplifier output, the other side of the bridge-tied load, an inverted unity-gain copy of Vo1 biased at VDD/2. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VSSOP-8 |+| Category | Amplifiers/Comparators |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `LM4889MM`+- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`+- 3D model: VSSOP-8 (KiCad packages3D, STEP)+- 3D model files: `lm4889mm-etched.step` / `lm4889mm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm4889mm.step` / `lm4889mm.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm4889) (31 pp, sha256 `1142703d6502f7cd`, retrieved 2026-10-03, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lm4889mm-datasheet.pdf)
page.jsonadded+161@@ -0,0 +1,161 @@+{+ "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"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}