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SN74LS51DR
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Texas Instruments Logic Gates, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+50@@ -0,0 +1,50 @@+# SN74LS51DR++**Texas Instruments** · Logic Gates · SOIC-14++SN74LS51DR from Texas Instruments, in a SOIC-14. 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 | 1A | input | Gate 1 input A, part of the first AND term (1A·1B·1C) of the 3-input AND-OR-invert gate. |+| 2 | 2A | input | Gate 2 input A, part of the first AND term (2A·2B) of the 2-input AND-OR-invert gate. |+| 3 | 2B | input | Gate 2 input B, part of the first AND term (2A·2B) of the 2-input AND-OR-invert gate. |+| 4 | 2C | input | Gate 2 input C, part of the second AND term (2C·2D) of the 2-input AND-OR-invert gate. |+| 5 | 2D | input | Gate 2 input D, part of the second AND term (2C·2D) of the 2-input AND-OR-invert gate. |+| 6 | 2Y | output | Gate 2 output, 2Y = NOT[(2A·2B)+(2C·2D)]. |+| 7 | GND | power_in | Ground. |+| 8 | 1Y | output | Gate 1 output, 1Y = NOT[(1A·1B·1C)+(1D·1E·1F)]. |+| 9 | 1D | input | Gate 1 input D, part of the second AND term (1D·1E·1F) of the 3-input AND-OR-invert gate. |+| 10 | 1E | input | Gate 1 input E, part of the second AND term (1D·1E·1F) of the 3-input AND-OR-invert gate. |+| 11 | 1F | input | Gate 1 input F, part of the second AND term (1D·1E·1F) of the 3-input AND-OR-invert gate. |+| 12 | 1B | input | Gate 1 input B, part of the first AND term (1A·1B·1C) of the 3-input AND-OR-invert gate. |+| 13 | 1C | input | Gate 1 input C, part of the first AND term (1A·1B·1C) of the 3-input AND-OR-invert gate. |+| 14 | VCC | power_in | Supply voltage. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-14 |+| Category | Logic |+| Pins | 14 |++## CAD (KiCad official)++- Symbol: `SN74LS51DR`+- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`+- 3D model: SOIC-14 (KiCad packages3D, STEP)+- 3D model files: `sn74ls51dr-etched.step` / `sn74ls51dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74ls51dr.step` / `sn74ls51dr.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/lit/ds/symlink/sn74ls51.pdf) (24 pp, sha256 `8dae26aa17b15caa`, retrieved 2026-10-07, tier: manufacturer)+- **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/sn74ls51dr-datasheet.pdf)
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D OR N PACKAGE' top-view diagram on page 1, which is an imag",+ "vision extraction: provenance cannot be text-verified; needs consensus"+ ],+ "pages_sent": 24,+ "cost_usd": 0.4225,+ "at": "2026-10-07T02:39:05"+ },+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/sn74ls51.pdf",+ "pages": 24,+ "sha256": "8dae26aa17b15caa",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 14,+ "described": 14,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "sn74ls51dr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 8.7,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "sn74ls51dr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 8.7,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "1d79cccaa252e9b2c40c5d9c494d688a0f8ae7fd76658888e56c7bad3d52cc0f",+ "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]"+ }+}