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SN74CB3Q3345DBQR
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Texas Instruments Analog Switches, Multiplexers, QSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+57@@ -0,0 +1,57 @@+# SN74CB3Q3345DBQR++**Texas Instruments** · Analog Switches, Multiplexers · QSOP-20++SN74CB3Q3345DBQR from Texas Instruments, in a QSOP-20. 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 | OE | input | Active-low control logic input; pulling this pin low connects all switch A side to B side. |+| 2 | A1 | bidirectional | Port A pin 1; can be input or output; supports signals from 0 to 5V. |+| 3 | A2 | bidirectional | Port A pin 2; can be input or output; supports signals from 0 to 5V. |+| 4 | A3 | bidirectional | Port A pin 3; can be input or output; supports signals from 0 to 5V. |+| 5 | A4 | bidirectional | Port A pin 4; can be input or output; supports signals from 0 to 5V. |+| 6 | A5 | bidirectional | Port A pin 5; can be input or output; supports signals from 0 to 5V. |+| 7 | A6 | bidirectional | Port A pin 6; can be input or output; supports signals from 0 to 5V. |+| 8 | A7 | bidirectional | Port A pin 7; can be input or output; supports signals from 0 to 5V. |+| 9 | A8 | bidirectional | Port A pin 8; can be input or output; supports signals from 0 to 5V. |+| 10 | GND | power_in | Ground (0V) reference. |+| 11 | B8 | bidirectional | Port B pin 8; can be input or output; supports signals from 0 to 5V. |+| 12 | B7 | bidirectional | Port B pin 7; can be input or output; supports signals from 0 to 5V. |+| 13 | B6 | bidirectional | Port B pin 6; can be input or output; supports signals from 0 to 5V. |+| 14 | B5 | bidirectional | Port B pin 5; can be input or output; supports signals from 0 to 5V. |+| 15 | B4 | bidirectional | Port B pin 4; can be input or output; supports signals from 0 to 5V. |+| 16 | B3 | bidirectional | Port B pin 3; can be input or output; supports signals from 0 to 5V. |+| 17 | B2 | bidirectional | Port B pin 2; can be input or output; supports signals from 0 to 5V. |+| 18 | B1 | bidirectional | Port B pin 1; can be input or output; supports signals from 0 to 5V. |+| 19 | OE | input | Active-high control logic input; pulling this pin high connects all switch A side to B side. |+| 20 | VCC | power_in | Positive power supply (2.3 to 3.6 V); connect 0.1 to 10 µF decoupling capacitor between VCC and GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | QSOP-20 |+| Category | Interface |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `SN74CB3Q3345DBQR`+- Footprint: `Package_SO:QSOP-20_3.9x8.7mm_P0.635mm`+- 3D model: QSOP-20 (KiCad packages3D, STEP)+- 3D model files: `sn74cb3q3345dbqr-etched.step` / `sn74cb3q3345dbqr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74cb3q3345dbqr.step` / `sn74cb3q3345dbqr.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/sn74cb3q3345) (20 pp, sha256 `b65cc6b2f5126dfe`, retrieved 2026-09-26, 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/sn74cb3q3345dbqr-datasheet.pdf)
page.jsonadded+228@@ -0,0 +1,228 @@+{+ "slug": "sn74cb3q3345dbqr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Analog Switches, Multiplexers, QSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "interface",+ "sn74cb3q3345dbqr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "sn74cb3q3345dbqr.kicad_sym",+ "sn74cb3q3345dbqr.kicad_mod",+ "sn74cb3q3345dbqr.glb",+ "sn74cb3q3345dbqr.step",+ "sn74cb3q3345dbqr.lbr",+ "docs/hero.png",+ "docs/sn74cb3q3345dbqr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "SN74CB3Q3345DBQR",+ "manufacturer": "Texas Instruments",+ "package": "QSOP-20",+ "pin_count": 20,+ "category": "Interface",+ "subcategory": "Analog Switches, Multiplexers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/sn74cb3q3345",+ "parts": {+ "symbol": "sn74cb3q3345dbqr.kicad_sym",+ "footprint": "sn74cb3q3345dbqr.kicad_mod",+ "model_3d": "sn74cb3q3345dbqr-etched.glb",+ "model_3d_plain": "sn74cb3q3345dbqr.glb",+ "model_3d_step": "sn74cb3q3345dbqr-etched.step",+ "model_3d_step_plain": "sn74cb3q3345dbqr.step",+ "lbr": "sn74cb3q3345dbqr.lbr"+ },+ "distributor_links": {+ "lcsc": "C2878922",+ "digikey": "296-19139-2-ND",+ "mouser": "595-SN74CB3Q3345DBQR"+ },+ "distributor_check": {+ "checked_at": "2026-09-26T11:51:27Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-19139-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-SN74CB3Q3345DBQR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "OE",+ "type": "input",+ "description": "Active-low control logic input; pulling this pin low connects all switch A side to B side."+ },+ {+ "number": "2",+ "name": "A1",+ "type": "bidirectional",+ "description": "Port A pin 1; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "3",+ "name": "A2",+ "type": "bidirectional",+ "description": "Port A pin 2; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "4",+ "name": "A3",+ "type": "bidirectional",+ "description": "Port A pin 3; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "5",+ "name": "A4",+ "type": "bidirectional",+ "description": "Port A pin 4; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "6",+ "name": "A5",+ "type": "bidirectional",+ "description": "Port A pin 5; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "7",+ "name": "A6",+ "type": "bidirectional",+ "description": "Port A pin 6; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "8",+ "name": "A7",+ "type": "bidirectional",+ "description": "Port A pin 7; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "9",+ "name": "A8",+ "type": "bidirectional",+ "description": "Port A pin 8; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground (0V) reference."+ },+ {+ "number": "11",+ "name": "B8",+ "type": "bidirectional",+ "description": "Port B pin 8; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "12",+ "name": "B7",+ "type": "bidirectional",+ "description": "Port B pin 7; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "13",+ "name": "B6",+ "type": "bidirectional",+ "description": "Port B pin 6; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "14",+ "name": "B5",+ "type": "bidirectional",+ "description": "Port B pin 5; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "15",+ "name": "B4",+ "type": "bidirectional",+ "description": "Port B pin 4; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "16",+ "name": "B3",+ "type": "bidirectional",+ "description": "Port B pin 3; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "17",+ "name": "B2",+ "type": "bidirectional",+ "description": "Port B pin 2; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "18",+ "name": "B1",+ "type": "bidirectional",+ "description": "Port B pin 1; can be input or output; supports signals from 0 to 5V."+ },+ {+ "number": "19",+ "name": "OE",+ "type": "input",+ "description": "Active-high control logic input; pulling this pin high connects all switch A side to B side."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive power supply (2.3 to 3.6 V); connect 0.1 to 10 µF decoupling capacitor between VCC and GND."+ }+ ],+ "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": 20,+ "cost_usd": 0.2331,+ "at": "2026-09-26T11:51:02"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn74cb3q3345",+ "pages": 20,+ "sha256": "b65cc6b2f5126dfe",+ "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",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}