component
74HC245KAJ
Public Made by Adomby adom
Shenzhen Fuman Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+56@@ -0,0 +1,56 @@+# 74HC245KAJ++**Shenzhen Fuman** · Buffers, Drivers, Receivers, Transceivers · TSSOP-20++74HC245KAJ from Shenzhen Fuman, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | DIR | input | Direction control input; selects data path direction (low = B to A, high = A to B). |+| 2 | A1 | bidirectional | Data input/output terminal A1; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high. |+| 3 | A2 | bidirectional | Data input/output terminal A2; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high. |+| 4 | A3 | bidirectional | Data input/output terminal A3; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high. |+| 5 | A4 | bidirectional | Data input/output terminal A4; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high. |+| 6 | A5 | bidirectional | Data input/output terminal A5; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high. |+| 7 | A6 | bidirectional | Data input/output terminal A6; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high. |+| 8 | A7 | bidirectional | Data input/output terminal A7; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high. |+| 9 | A8 | bidirectional | Data input/output terminal A8; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high. |+| 10 | GND | power_in | Logic ground (0 V reference). |+| 11 | B8 | bidirectional | Data input/output terminal B8; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high. |+| 12 | B7 | bidirectional | Data input/output terminal B7; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high. |+| 13 | B6 | bidirectional | Data input/output terminal B6; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high. |+| 14 | B5 | bidirectional | Data input/output terminal B5; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high. |+| 15 | B4 | bidirectional | Data input/output terminal B4; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high. |+| 16 | B3 | bidirectional | Data input/output terminal B3; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high. |+| 17 | B2 | bidirectional | Data input/output terminal B2; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high. |+| 18 | B1 | bidirectional | Data input/output terminal B1; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high. |+| 19 | /OE | input | Output enable input (active low); when low enables tri-state outputs, when high places A and B buses in high impedance. |+| 20 | VCC | power_in | Logic power supply; operates from 3.0 to 5.5 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shenzhen Fuman |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `74HC245KAJ`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shenzhen Fuman datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590910725999583232) (8 pp, sha256 `8547b64d6a0bcdd9`, retrieved 2026-09-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/74hc245kaj-datasheet.pdf)
page.jsonadded+210@@ -0,0 +1,210 @@+{+ "slug": "74hc245kaj",+ "version": "0.1.0",+ "type": "component",+ "description": "Shenzhen Fuman Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "logic",+ "74hc245kaj",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "74hc245kaj.kicad_sym",+ "74hc245kaj.kicad_mod",+ "74hc245kaj.glb",+ "74hc245kaj.step",+ "74hc245kaj.lbr",+ "docs/hero.png",+ "docs/74hc245kaj-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "74HC245KAJ",+ "manufacturer": "Shenzhen Fuman",+ "package": "TSSOP-20",+ "pin_count": 20,+ "category": "Logic",+ "subcategory": "Buffers, Drivers, Receivers, Transceivers",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590910725999583232",+ "parts": {+ "symbol": "74hc245kaj.kicad_sym",+ "footprint": "74hc245kaj.kicad_mod",+ "model_3d": "74hc245kaj.glb",+ "model_3d_step": "74hc245kaj.step",+ "lbr": "74hc245kaj.lbr"+ },+ "distributor_links": {+ "lcsc": "C19192982"+ },+ "pins": [+ {+ "number": "1",+ "name": "DIR",+ "type": "input",+ "description": "Direction control input; selects data path direction (low = B to A, high = A to B)."+ },+ {+ "number": "2",+ "name": "A1",+ "type": "bidirectional",+ "description": "Data input/output terminal A1; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "3",+ "name": "A2",+ "type": "bidirectional",+ "description": "Data input/output terminal A2; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "4",+ "name": "A3",+ "type": "bidirectional",+ "description": "Data input/output terminal A3; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "5",+ "name": "A4",+ "type": "bidirectional",+ "description": "Data input/output terminal A4; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "6",+ "name": "A5",+ "type": "bidirectional",+ "description": "Data input/output terminal A5; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "7",+ "name": "A6",+ "type": "bidirectional",+ "description": "Data input/output terminal A6; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "8",+ "name": "A7",+ "type": "bidirectional",+ "description": "Data input/output terminal A7; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "9",+ "name": "A8",+ "type": "bidirectional",+ "description": "Data input/output terminal A8; output when /OE low and DIR = 1, input when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Logic ground (0 V reference)."+ },+ {+ "number": "11",+ "name": "B8",+ "type": "bidirectional",+ "description": "Data input/output terminal B8; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "12",+ "name": "B7",+ "type": "bidirectional",+ "description": "Data input/output terminal B7; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "13",+ "name": "B6",+ "type": "bidirectional",+ "description": "Data input/output terminal B6; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "14",+ "name": "B5",+ "type": "bidirectional",+ "description": "Data input/output terminal B5; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "15",+ "name": "B4",+ "type": "bidirectional",+ "description": "Data input/output terminal B4; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "16",+ "name": "B3",+ "type": "bidirectional",+ "description": "Data input/output terminal B3; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "17",+ "name": "B2",+ "type": "bidirectional",+ "description": "Data input/output terminal B2; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "18",+ "name": "B1",+ "type": "bidirectional",+ "description": "Data input/output terminal B1; input when /OE low and DIR = 1, output when /OE low and DIR = 0, high-impedance when /OE high."+ },+ {+ "number": "19",+ "name": "/OE",+ "type": "input",+ "description": "Output enable input (active low); when low enables tri-state outputs, when high places A and B buses in high impedance."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Logic power supply; operates from 3.0 to 5.5 V."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 8,+ "cost_usd": 0.1917,+ "at": "2026-09-17T18:10:56"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590910725999583232",+ "pages": 8,+ "sha256": "8547b64d6a0bcdd9",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 20,+ "described": 20,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}