component
LF444CN
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Texas Instruments FET Input Amplifiers, DIP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+50@@ -0,0 +1,50 @@+# LF444CN++**Texas Instruments** · FET Input Amplifiers · DIP-14++LF444CN from Texas Instruments, in a DIP-14. 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 | OUT1 | output | Output of amplifier 1; drives a 10 kΩ load to ±10V over the full temperature range. |+| 2 | IN1- | input | Inverting input of amplifier 1 (JFET input); must not exceed the negative supply. |+| 3 | IN1+ | input | Non-inverting input of amplifier 1 (JFET input); must not exceed the negative supply. |+| 4 | V+ | power_in | Positive supply; absolute maximum supply voltage is ±18V for the LF444, and the amplifiers operate with supplies down to ±3.0V. |+| 5 | IN2+ | input | Non-inverting input of amplifier 2 (JFET input); must not exceed the negative supply. |+| 6 | IN2- | input | Inverting input of amplifier 2 (JFET input); must not exceed the negative supply. |+| 7 | OUT2 | output | Output of amplifier 2; may be shorted to ground indefinitely, but not more than one output at once. |+| 8 | OUT3 | output | Output of amplifier 3; may be shorted to ground indefinitely, but not more than one output at once. |+| 9 | IN3- | input | Inverting input of amplifier 3 (JFET input); must not exceed the negative supply. |+| 10 | IN3+ | input | Non-inverting input of amplifier 3 (JFET input); must not exceed the negative supply. |+| 11 | V- | power_in | Negative supply; input voltages must not be allowed to exceed it, and the supply must never be reversed in polarity. |+| 12 | IN4+ | input | Non-inverting input of amplifier 4 (JFET input); must not exceed the negative supply. |+| 13 | IN4- | input | Inverting input of amplifier 4 (JFET input); must not exceed the negative supply. |+| 14 | OUT4 | output | Output of amplifier 4; may be shorted to ground indefinitely, but not more than one output at once. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | DIP-14 |+| Category | Amplifiers/Comparators |+| Pins | 14 |++## CAD (KiCad official)++- Symbol: `LF444CN`+- Footprint: `Package_DIP:DIP-14_W7.62mm`+- 3D model: DIP-14 (KiCad packages3D, STEP)+- 3D model files: `lf444cn-etched.step` / `lf444cn-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lf444cn.step` / `lf444cn.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/lf444) (21 pp, sha256 `fba9120ffbce1dca`, retrieved 2026-10-01, 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/lf444cn-datasheet.pdf)
page.jsonadded+195@@ -0,0 +1,195 @@+{+ "slug": "lf444cn",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments FET Input Amplifiers, DIP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "amplifiers-comparators",+ "lf444cn",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lf444cn.kicad_sym",+ "lf444cn.kicad_mod",+ "lf444cn.glb",+ "lf444cn.step",+ "lf444cn.lbr",+ "docs/hero.png",+ "docs/lf444cn-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LF444CN",+ "manufacturer": "Texas Instruments",+ "package": "DIP-14",+ "pin_count": 14,+ "category": "Amplifiers/Comparators",+ "subcategory": "FET Input Amplifiers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lf444",+ "parts": {+ "symbol": "lf444cn.kicad_sym",+ "footprint": "lf444cn.kicad_mod",+ "model_3d": "lf444cn-etched.glb",+ "model_3d_plain": "lf444cn.glb",+ "model_3d_step": "lf444cn-etched.step",+ "model_3d_step_plain": "lf444cn.step",+ "lbr": "lf444cn.lbr"+ },+ "distributor_links": {+ "lcsc": "C34069",+ "digikey": "LF444CN-ND",+ "mouser": "926-LF444CN"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T15:30:27Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "LF444CN-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "926-LF444CN",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "OUT1",+ "type": "output",+ "description": "Output of amplifier 1; drives a 10 kΩ load to ±10V over the full temperature range."+ },+ {+ "number": "2",+ "name": "IN1-",+ "type": "input",+ "description": "Inverting input of amplifier 1 (JFET input); must not exceed the negative supply."+ },+ {+ "number": "3",+ "name": "IN1+",+ "type": "input",+ "description": "Non-inverting input of amplifier 1 (JFET input); must not exceed the negative supply."+ },+ {+ "number": "4",+ "name": "V+",+ "type": "power_in",+ "description": "Positive supply; absolute maximum supply voltage is ±18V for the LF444, and the amplifiers operate with supplies down to ±3.0V."+ },+ {+ "number": "5",+ "name": "IN2+",+ "type": "input",+ "description": "Non-inverting input of amplifier 2 (JFET input); must not exceed the negative supply."+ },+ {+ "number": "6",+ "name": "IN2-",+ "type": "input",+ "description": "Inverting input of amplifier 2 (JFET input); must not exceed the negative supply."+ },+ {+ "number": "7",+ "name": "OUT2",+ "type": "output",+ "description": "Output of amplifier 2; may be shorted to ground indefinitely, but not more than one output at once."+ },+ {+ "number": "8",+ "name": "OUT3",+ "type": "output",+ "description": "Output of amplifier 3; may be shorted to ground indefinitely, but not more than one output at once."+ },+ {+ "number": "9",+ "name": "IN3-",+ "type": "input",+ "description": "Inverting input of amplifier 3 (JFET input); must not exceed the negative supply."+ },+ {+ "number": "10",+ "name": "IN3+",+ "type": "input",+ "description": "Non-inverting input of amplifier 3 (JFET input); must not exceed the negative supply."+ },+ {+ "number": "11",+ "name": "V-",+ "type": "power_in",+ "description": "Negative supply; input voltages must not be allowed to exceed it, and the supply must never be reversed in polarity."+ },+ {+ "number": "12",+ "name": "IN4+",+ "type": "input",+ "description": "Non-inverting input of amplifier 4 (JFET input); must not exceed the negative supply."+ },+ {+ "number": "13",+ "name": "IN4-",+ "type": "input",+ "description": "Inverting input of amplifier 4 (JFET input); must not exceed the negative supply."+ },+ {+ "number": "14",+ "name": "OUT4",+ "type": "output",+ "description": "Output of amplifier 4; may be shorted to ground indefinitely, but not more than one output at once."+ }+ ],+ "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": 21,+ "cost_usd": 0.3816,+ "at": "2026-10-01T15:30:12"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lf444",+ "pages": 21,+ "sha256": "fba9120ffbce1dca",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 14,+ "described": 14,+ "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]"+ }+}