component
LM239QT
Public Made by Adomby adom
STMicroelectronics Comparators, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+53@@ -0,0 +1,53 @@+# LM239QT++**STMicroelectronics** · Comparators · QFN-16-EP(3x3)++LM239QT from STMicroelectronics, in a QFN-16-EP(3x3). 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 | VCC+ | power_in | Positive supply; datasheet gives 2 to 32 V single supply (absolute maximum 36 V). |+| 2 | IN-1 | input | Inverting input of comparator 1; common-mode range 0 to VCC+ - 1.5 V. |+| 3 | NC | unconnected | No internal connection. |+| 4 | IN+1 | input | Non-inverting input of comparator 1; common-mode range 0 to VCC+ - 1.5 V. |+| 5 | IN-2 | input | Inverting input of comparator 2; common-mode range 0 to VCC+ - 1.5 V. |+| 6 | IN+2 | input | Non-inverting input of comparator 2; common-mode range 0 to VCC+ - 1.5 V. |+| 7 | IN-3 | input | Inverting input of comparator 3; common-mode range 0 to VCC+ - 1.5 V. |+| 8 | IN+3 | input | Non-inverting input of comparator 3; common-mode range 0 to VCC+ - 1.5 V. |+| 9 | IN-4 | input | Inverting input of comparator 4; common-mode range 0 to VCC+ - 1.5 V. |+| 10 | NC | unconnected | No internal connection. |+| 11 | IN+4 | input | Non-inverting input of comparator 4; common-mode range 0 to VCC+ - 1.5 V. |+| 12 | VCC- | power_in | Negative supply or ground for single-supply operation. |+| 13 | OUT4 | output | Open-collector output of comparator 4; max output current about 20 mA, 250 mV typ saturation at 4 mA sink. |+| 14 | OUT3 | output | Open-collector output of comparator 3; max output current about 20 mA, 250 mV typ saturation at 4 mA sink. |+| 15 | OUT2 | output | Open-collector output of comparator 2; max output current about 20 mA, 250 mV typ saturation at 4 mA sink. |+| 16 | OUT1 | output | Open-collector output of comparator 1; max output current about 20 mA, 250 mV typ saturation at 4 mA sink. |+| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | QFN-16-EP(3x3) |+| Category | Amplifiers/Comparators |+| Pins | 17 |++## CAD (KiCad official)++- Symbol: `LM239QT`+- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`+- 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)+- 3D model files: `lm239qt-etched.step` / `lm239qt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm239qt.step` / `lm239qt.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588954737697415168) (19 pp, sha256 `5adc47258717f516`, retrieved 2026-10-06, 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/lm239qt-datasheet.pdf)
page.jsonadded+216@@ -0,0 +1,216 @@+{+ "slug": "lm239qt",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics Comparators, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "amplifiers-comparators",+ "lm239qt",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm239qt.kicad_sym",+ "lm239qt.kicad_mod",+ "lm239qt.glb",+ "lm239qt.step",+ "lm239qt.lbr",+ "docs/hero.png",+ "docs/lm239qt-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm239qt-hero.glb",+ "lm239qt-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM239QT",+ "manufacturer": "STMicroelectronics",+ "package": "QFN-16-EP(3x3)",+ "pin_count": 17,+ "category": "Amplifiers/Comparators",+ "subcategory": "Comparators",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588954737697415168",+ "parts": {+ "symbol": "lm239qt.kicad_sym",+ "footprint": "lm239qt.kicad_mod",+ "model_3d": "lm239qt-hero.glb",+ "model_3d_plain": "lm239qt.glb",+ "model_3d_step": "lm239qt-etched.step",+ "model_3d_step_plain": "lm239qt.step",+ "lbr": "lm239qt.lbr"+ },+ "distributor_links": {+ "lcsc": 2935139,+ "digikey": "497-13140-2-ND",+ "mouser": "511-LM239QT"+ },+ "distributor_check": {+ "checked_at": "2026-10-06T17:20:28Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "497-13140-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "511-LM239QT",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VCC+",+ "type": "power_in",+ "description": "Positive supply; datasheet gives 2 to 32 V single supply (absolute maximum 36 V)."+ },+ {+ "number": "2",+ "name": "IN-1",+ "type": "input",+ "description": "Inverting input of comparator 1; common-mode range 0 to VCC+ - 1.5 V."+ },+ {+ "number": "3",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection."+ },+ {+ "number": "4",+ "name": "IN+1",+ "type": "input",+ "description": "Non-inverting input of comparator 1; common-mode range 0 to VCC+ - 1.5 V."+ },+ {+ "number": "5",+ "name": "IN-2",+ "type": "input",+ "description": "Inverting input of comparator 2; common-mode range 0 to VCC+ - 1.5 V."+ },+ {+ "number": "6",+ "name": "IN+2",+ "type": "input",+ "description": "Non-inverting input of comparator 2; common-mode range 0 to VCC+ - 1.5 V."+ },+ {+ "number": "7",+ "name": "IN-3",+ "type": "input",+ "description": "Inverting input of comparator 3; common-mode range 0 to VCC+ - 1.5 V."+ },+ {+ "number": "8",+ "name": "IN+3",+ "type": "input",+ "description": "Non-inverting input of comparator 3; common-mode range 0 to VCC+ - 1.5 V."+ },+ {+ "number": "9",+ "name": "IN-4",+ "type": "input",+ "description": "Inverting input of comparator 4; common-mode range 0 to VCC+ - 1.5 V."+ },+ {+ "number": "10",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection."+ },+ {+ "number": "11",+ "name": "IN+4",+ "type": "input",+ "description": "Non-inverting input of comparator 4; common-mode range 0 to VCC+ - 1.5 V."+ },+ {+ "number": "12",+ "name": "VCC-",+ "type": "power_in",+ "description": "Negative supply or ground for single-supply operation."+ },+ {+ "number": "13",+ "name": "OUT4",+ "type": "output",+ "description": "Open-collector output of comparator 4; max output current about 20 mA, 250 mV typ saturation at 4 mA sink."+ },+ {+ "number": "14",+ "name": "OUT3",+ "type": "output",+ "description": "Open-collector output of comparator 3; max output current about 20 mA, 250 mV typ saturation at 4 mA sink."+ },+ {+ "number": "15",+ "name": "OUT2",+ "type": "output",+ "description": "Open-collector output of comparator 2; max output current about 20 mA, 250 mV typ saturation at 4 mA sink."+ },+ {+ "number": "16",+ "name": "OUT1",+ "type": "output",+ "description": "Open-collector output of comparator 1; max output current about 20 mA, 250 mV typ saturation at 4 mA sink."+ },+ {+ "number": "17",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "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": [+ "extractor flagged: The QFN16 drawing shows a dashed exposed-pad outline in the center with no pin number or connection ; Open-collector output type is inferred from the schematic (Figure 2, output transistor) and the outp",+ "exposed pad 17 added from the footprint",+ "vision extraction: provenance cannot be text-verified; needs consensus"+ ],+ "pages_sent": 19,+ "cost_usd": 0.3425,+ "at": "2026-10-06T17:20:15"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588954737697415168",+ "pages": 19,+ "sha256": "5adc47258717f516",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 17,+ "described": 17,+ "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]"+ }+}