component
CY74FCT646ATQCT
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, SSOP-24-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+60@@ -0,0 +1,60 @@+# CY74FCT646ATQCT++**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · SSOP-24-150mil++CY74FCT646ATQCT from Texas Instruments, in a SSOP-24-150mil. 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 | CPAB | input | Clock-pulse input that stores A-bus data in the A-to-B register on the low-to-high transition. |+| 2 | SAB | input | Output data-source-select input that selects real-time (low) or stored (high) data for the B bus. |+| 3 | DIR | input | Direction output-enable input that determines which bus receives data when G is low (high = A to B, low = B to A). |+| 4 | A1 | bidirectional | Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 5 | A2 | bidirectional | Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 6 | A3 | bidirectional | Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 7 | A4 | bidirectional | Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 8 | A5 | bidirectional | Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 9 | A6 | bidirectional | Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 10 | A7 | bidirectional | Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 11 | A8 | bidirectional | Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 12 | GND | power_in | Ground pin (0 V reference). |+| 13 | B8 | bidirectional | Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 14 | B7 | bidirectional | Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 15 | B6 | bidirectional | Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 16 | B5 | bidirectional | Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 17 | B4 | bidirectional | Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 18 | B3 | bidirectional | Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 19 | B2 | bidirectional | Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 20 | B1 | bidirectional | Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T. |+| 21 | G | input | Output-enable input; outputs are enabled when low and the device is in isolation mode when high. |+| 22 | SBA | input | Output data-source-select input that selects real-time (low) or stored (high) data for the A bus. |+| 23 | CPBA | input | Clock-pulse input that stores B-bus data in the B-to-A register on the low-to-high transition. |+| 24 | VCC | power_in | Supply voltage, 4.75 V to 5.25 V recommended for CY74FCT646T. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-24-150mil |+| Category | Logic |+| Pins | 24 |++## CAD (KiCad official)++- Symbol: `CY74FCT646ATQCT`+- Footprint: `Package_SO:SSOP-24_5.3x8.2mm_P0.65mm`+- 3D model: SSOP-24-150mil (KiCad packages3D, STEP)+- 3D model files: `cy74fct646atqct-etched.step` / `cy74fct646atqct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cy74fct646atqct.step` / `cy74fct646atqct.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/cy74fct646t) (15 pp, sha256 `13b3f72899297c10`, retrieved 2026-10-01, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/cy74fct646atqct-datasheet.pdf)
page.jsonadded+255@@ -0,0 +1,255 @@+{+ "slug": "cy74fct646atqct",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, SSOP-24-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "logic",+ "cy74fct646atqct",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "cy74fct646atqct.kicad_sym",+ "cy74fct646atqct.kicad_mod",+ "cy74fct646atqct.glb",+ "cy74fct646atqct.step",+ "cy74fct646atqct.lbr",+ "docs/hero.png",+ "docs/cy74fct646atqct-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "CY74FCT646ATQCT",+ "manufacturer": "Texas Instruments",+ "package": "SSOP-24-150mil",+ "pin_count": 24,+ "category": "Logic",+ "subcategory": "Buffers, Drivers, Receivers, Transceivers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/cy74fct646t",+ "parts": {+ "symbol": "cy74fct646atqct.kicad_sym",+ "footprint": "cy74fct646atqct.kicad_mod",+ "model_3d": "cy74fct646atqct-etched.glb",+ "model_3d_plain": "cy74fct646atqct.glb",+ "model_3d_step": "cy74fct646atqct-etched.step",+ "model_3d_step_plain": "cy74fct646atqct.step",+ "lbr": "cy74fct646atqct.lbr"+ },+ "distributor_links": {+ "lcsc": "C2873070",+ "digikey": "296-14582-2-ND",+ "mouser": "595-CY74FCT646ATQCT"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T04:52:44Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-14582-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-CY74FCT646ATQCT",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "CPAB",+ "type": "input",+ "description": "Clock-pulse input that stores A-bus data in the A-to-B register on the low-to-high transition."+ },+ {+ "number": "2",+ "name": "SAB",+ "type": "input",+ "description": "Output data-source-select input that selects real-time (low) or stored (high) data for the B bus."+ },+ {+ "number": "3",+ "name": "DIR",+ "type": "input",+ "description": "Direction output-enable input that determines which bus receives data when G is low (high = A to B, low = B to A)."+ },+ {+ "number": "4",+ "name": "A1",+ "type": "bidirectional",+ "description": "Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "5",+ "name": "A2",+ "type": "bidirectional",+ "description": "Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "6",+ "name": "A3",+ "type": "bidirectional",+ "description": "Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "7",+ "name": "A4",+ "type": "bidirectional",+ "description": "Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "8",+ "name": "A5",+ "type": "bidirectional",+ "description": "Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "9",+ "name": "A6",+ "type": "bidirectional",+ "description": "Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "10",+ "name": "A7",+ "type": "bidirectional",+ "description": "Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "11",+ "name": "A8",+ "type": "bidirectional",+ "description": "Data register A input / data register B output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "12",+ "name": "GND",+ "type": "power_in",+ "description": "Ground pin (0 V reference)."+ },+ {+ "number": "13",+ "name": "B8",+ "type": "bidirectional",+ "description": "Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "14",+ "name": "B7",+ "type": "bidirectional",+ "description": "Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "15",+ "name": "B6",+ "type": "bidirectional",+ "description": "Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "16",+ "name": "B5",+ "type": "bidirectional",+ "description": "Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "17",+ "name": "B4",+ "type": "bidirectional",+ "description": "Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "18",+ "name": "B3",+ "type": "bidirectional",+ "description": "Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "19",+ "name": "B2",+ "type": "bidirectional",+ "description": "Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "20",+ "name": "B1",+ "type": "bidirectional",+ "description": "Data register B input / data register A output, 3-state, with 64-mA sink and 32-mA source drive for CY74FCT646T."+ },+ {+ "number": "21",+ "name": "G",+ "type": "input",+ "description": "Output-enable input; outputs are enabled when low and the device is in isolation mode when high."+ },+ {+ "number": "22",+ "name": "SBA",+ "type": "input",+ "description": "Output data-source-select input that selects real-time (low) or stored (high) data for the A bus."+ },+ {+ "number": "23",+ "name": "CPBA",+ "type": "input",+ "description": "Clock-pulse input that stores B-bus data in the B-to-A register on the low-to-high transition."+ },+ {+ "number": "24",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply voltage, 4.75 V to 5.25 V recommended for CY74FCT646T."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: The ASCII representation of the pinout diagram on PAGE 1 was difficult to parse definitively. While ",+ "1/24 pins cited to the wrong page (name found elsewhere): ['24:VCC@p5']"+ ],+ "pages_sent": 15,+ "cost_usd": 0.1764,+ "at": "2026-10-01T04:52:25"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/cy74fct646t",+ "pages": 15,+ "sha256": "13b3f72899297c10",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 24,+ "described": 24,+ "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]"+ }+}