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SN74LS688DWR
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Texas Instruments Digital Comparators, SOIC-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 @@+# SN74LS688DWR++**Texas Instruments** · Digital Comparators · SOIC-20++SN74LS688DWR from Texas Instruments, in a SOIC-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 | G̅ | input | Active-low enable input that, when low, allows the P=Q output to go low on equality (function table enable G). |+| 2 | P0 | input | P word data input bit 0, compared with Q0. |+| 3 | Q0 | input | Q word data input bit 0, compared with P0. |+| 4 | P1 | input | P word data input bit 1, compared with Q1. |+| 5 | Q1 | input | Q word data input bit 1, compared with P1. |+| 6 | P2 | input | P word data input bit 2, compared with Q2. |+| 7 | Q2 | input | Q word data input bit 2, compared with P2. |+| 8 | P3 | input | P word data input bit 3, compared with Q3. |+| 9 | Q3 | input | Q word data input bit 3, compared with P3. |+| 10 | GND | power_in | Ground. |+| 11 | P4 | input | P word data input bit 4, compared with Q4. |+| 12 | Q4 | input | Q word data input bit 4, compared with P4. |+| 13 | P5 | input | P word data input bit 5, compared with Q5. |+| 14 | Q5 | input | Q word data input bit 5, compared with P5. |+| 15 | P6 | input | P word data input bit 6, compared with Q6. |+| 16 | Q6 | input | Q word data input bit 6, compared with P6. |+| 17 | P7 | input | P word data input bit 7, compared with Q7. |+| 18 | Q7 | input | Q word data input bit 7, compared with P7. |+| 19 | P=Q | output | Active-low totem-pole identity output, low when P equals Q and G is low. |+| 20 | VCC | power_in | Positive supply voltage. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-20 |+| Category | Logic |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `SN74LS688DWR`+- Footprint: `Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm`+- 3D model: SOIC-20 (KiCad packages3D, STEP)+- 3D model files: `sn74ls688dwr-etched.step` / `sn74ls688dwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74ls688dwr.step` / `sn74ls688dwr.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/sn54ls682) (26 pp, sha256 `a0bd34df5b6e904f`, retrieved 2026-10-07, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/sn74ls688dwr-datasheet.pdf)
page.jsonadded+273@@ -0,0 +1,273 @@+{+ "slug": "sn74ls688dwr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Digital Comparators, SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "logic",+ "sn74ls688dwr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "sn74ls688dwr.kicad_sym",+ "sn74ls688dwr.kicad_mod",+ "sn74ls688dwr.glb",+ "sn74ls688dwr.step",+ "sn74ls688dwr.lbr",+ "docs/hero.png",+ "docs/sn74ls688dwr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "sn74ls688dwr-hero.glb",+ "sn74ls688dwr-hero.overlay.json"+ ],+ "component": {+ "mpn": "SN74LS688DWR",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-20",+ "pin_count": 20,+ "category": "Logic",+ "subcategory": "Digital Comparators",+ "datasheet": "https://www.ti.com/cn/lit/gpn/sn54ls682",+ "parts": {+ "symbol": "sn74ls688dwr.kicad_sym",+ "footprint": "sn74ls688dwr.kicad_mod",+ "model_3d": "sn74ls688dwr-hero.glb",+ "model_3d_plain": "sn74ls688dwr.glb",+ "model_3d_step": "sn74ls688dwr-etched.step",+ "model_3d_step_plain": "sn74ls688dwr.step",+ "lbr": "sn74ls688dwr.lbr"+ },+ "distributor_links": {+ "lcsc": "C2878437",+ "digikey": "296-28515-2-ND",+ "mouser": "595-SN74LS688DWR"+ },+ "distributor_check": {+ "checked_at": "2026-10-07T02:44:24Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-28515-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-SN74LS688DWR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "G̅",+ "type": "input",+ "description": "Active-low enable input that, when low, allows the P=Q output to go low on equality (function table enable G)."+ },+ {+ "number": "2",+ "name": "P0",+ "type": "input",+ "description": "P word data input bit 0, compared with Q0."+ },+ {+ "number": "3",+ "name": "Q0",+ "type": "input",+ "description": "Q word data input bit 0, compared with P0."+ },+ {+ "number": "4",+ "name": "P1",+ "type": "input",+ "description": "P word data input bit 1, compared with Q1."+ },+ {+ "number": "5",+ "name": "Q1",+ "type": "input",+ "description": "Q word data input bit 1, compared with P1."+ },+ {+ "number": "6",+ "name": "P2",+ "type": "input",+ "description": "P word data input bit 2, compared with Q2."+ },+ {+ "number": "7",+ "name": "Q2",+ "type": "input",+ "description": "Q word data input bit 2, compared with P2."+ },+ {+ "number": "8",+ "name": "P3",+ "type": "input",+ "description": "P word data input bit 3, compared with Q3."+ },+ {+ "number": "9",+ "name": "Q3",+ "type": "input",+ "description": "Q word data input bit 3, compared with P3."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground."+ },+ {+ "number": "11",+ "name": "P4",+ "type": "input",+ "description": "P word data input bit 4, compared with Q4."+ },+ {+ "number": "12",+ "name": "Q4",+ "type": "input",+ "description": "Q word data input bit 4, compared with P4."+ },+ {+ "number": "13",+ "name": "P5",+ "type": "input",+ "description": "P word data input bit 5, compared with Q5."+ },+ {+ "number": "14",+ "name": "Q5",+ "type": "input",+ "description": "Q word data input bit 5, compared with P5."+ },+ {+ "number": "15",+ "name": "P6",+ "type": "input",+ "description": "P word data input bit 6, compared with Q6."+ },+ {+ "number": "16",+ "name": "Q6",+ "type": "input",+ "description": "Q word data input bit 6, compared with P6."+ },+ {+ "number": "17",+ "name": "P7",+ "type": "input",+ "description": "P word data input bit 7, compared with Q7."+ },+ {+ "number": "18",+ "name": "Q7",+ "type": "input",+ "description": "Q word data input bit 7, compared with P7."+ },+ {+ "number": "19",+ "name": "P=Q",+ "type": "output",+ "description": "Active-low totem-pole identity output, low when P equals Q and G is low."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply voltage."+ }+ ],+ "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": "vision",+ "consensus_model": "claude-opus-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Only pages 1-3 were read; electrical pages (4-12) were not checked, so pin descriptions contain no n; Datasheet shows the SN74LS688 in a combined 'DW or N package' pinout; DW (SOIC-20) is assumed for th",+ "vision extraction: provenance cannot be text-verified; needs consensus"+ ],+ "pages_sent": 12,+ "cost_usd": 0.2672,+ "at": "2026-10-07T02:43:59"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn54ls682",+ "pages": 26,+ "sha256": "a0bd34df5b6e904f",+ "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"+ },+ "models_3d": [+ {+ "file": "sn74ls688dwr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 10.3,+ 12.8,+ 2.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "sn74ls688dwr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 10.3,+ 12.8,+ 2.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "142bb9613b7d64c9c8d64452cd3912f529610b6252754f1006f27e54712ffcf5",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}