component
SN74LVCH245APWR
Public Made by Adomby adom
Texas Instruments 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 @@+# SN74LVCH245APWR++**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · TSSOP-20++SN74LVCH245APWR from Texas Instruments, in a TSSOP-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 | DIR | input | Direction select input that sets whether data flows from A to B or B to A. |+| 2 | A1 | bidirectional | A1 input or output; inputs accept voltages to 5.5 V and the pin has bus hold. |+| 3 | A2 | bidirectional | A2 input or output; inputs accept voltages to 5.5 V and the pin has bus hold. |+| 4 | A3 | bidirectional | A3 input or output; inputs accept voltages to 5.5 V and the pin has bus hold. |+| 5 | A4 | bidirectional | A4 input or output; inputs accept voltages to 5.5 V and the pin has bus hold. |+| 6 | A5 | bidirectional | A5 input or output; inputs accept voltages to 5.5 V and the pin has bus hold. |+| 7 | A6 | bidirectional | A6 input or output; inputs accept voltages to 5.5 V and the pin has bus hold. |+| 8 | A7 | bidirectional | A7 input or output; inputs accept voltages to 5.5 V and the pin has bus hold. |+| 9 | A8 | bidirectional | A8 input or output; inputs accept voltages to 5.5 V and the pin has bus hold. |+| 10 | GND | power_in | Ground. |+| 11 | B8 | bidirectional | B8 input or output (the pin table labels it Y8); inputs accept voltages to 5.5 V and the pin has bus hold. |+| 12 | B7 | bidirectional | B7 input or output (the pin table labels it Y7); inputs accept voltages to 5.5 V and the pin has bus hold. |+| 13 | B6 | bidirectional | B6 input or output (the pin table labels it Y6); inputs accept voltages to 5.5 V and the pin has bus hold. |+| 14 | B5 | bidirectional | B5 input or output (the pin table labels it Y5); inputs accept voltages to 5.5 V and the pin has bus hold. |+| 15 | B4 | bidirectional | B4 input or output (the pin table labels it Y4); inputs accept voltages to 5.5 V and the pin has bus hold. |+| 16 | B3 | bidirectional | B3 input or output (the pin table labels it Y3); inputs accept voltages to 5.5 V and the pin has bus hold. |+| 17 | B2 | bidirectional | B2 input or output (the pin table labels it Y2); inputs accept voltages to 5.5 V and the pin has bus hold. |+| 18 | B1 | bidirectional | B1 input or output (the pin table labels it Y1); inputs accept voltages to 5.5 V and the pin has bus hold. |+| 19 | OE | input | Output enable, active low. |+| 20 | VCC | power_in | Positive supply; SN74LVCH245A operates from 1.65 V to 3.6 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `SN74LVCH245APWR`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)+- 3D model files: `sn74lvch245apwr-etched.step` / `sn74lvch245apwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvch245apwr.step` / `sn74lvch245apwr.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/sn74lvch245a.pdf) (44 pp, sha256 `d6a53fff1f569e05`, retrieved 2026-10-08, tier: manufacturer)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (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/sn74lvch245apwr-datasheet.pdf)
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inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "3",+ "name": "A2",+ "type": "bidirectional",+ "description": "A2 input or output; inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "4",+ "name": "A3",+ "type": "bidirectional",+ "description": "A3 input or output; inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "5",+ "name": "A4",+ "type": "bidirectional",+ "description": "A4 input or output; inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "6",+ "name": "A5",+ "type": "bidirectional",+ "description": "A5 input or output; inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "7",+ "name": "A6",+ "type": "bidirectional",+ "description": "A6 input or output; inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "8",+ "name": "A7",+ "type": "bidirectional",+ "description": "A7 input or output; inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "9",+ "name": "A8",+ "type": "bidirectional",+ "description": "A8 input or output; inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground."+ },+ {+ "number": "11",+ "name": "B8",+ "type": "bidirectional",+ "description": "B8 input or output (the pin table labels it Y8); inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "12",+ "name": "B7",+ "type": "bidirectional",+ "description": "B7 input or output (the pin table labels it Y7); inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "13",+ "name": "B6",+ "type": "bidirectional",+ "description": "B6 input or output (the pin table labels it Y6); inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "14",+ "name": "B5",+ "type": "bidirectional",+ "description": "B5 input or output (the pin table labels it Y5); inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "15",+ "name": "B4",+ "type": "bidirectional",+ "description": "B4 input or output (the pin table labels it Y4); inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "16",+ "name": "B3",+ "type": "bidirectional",+ "description": "B3 input or output (the pin table labels it Y3); inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "17",+ "name": "B2",+ "type": "bidirectional",+ "description": "B2 input or output (the pin table labels it Y2); inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "18",+ "name": "B1",+ "type": "bidirectional",+ "description": "B1 input or output (the pin table labels it Y1); inputs accept voltages to 5.5 V and the pin has bus hold."+ },+ {+ "number": "19",+ "name": "OE",+ "type": "input",+ "description": "Output enable, active low."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply; SN74LVCH245A operates from 1.65 V to 3.6 V."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: The PW (TSSOP-20) pin numbering is taken from the 'Pin Functions' table on page 5, which applies to ; Naming conflict on the B-side bus: the page 4 top-view figure labels pins 11-18 as B8..B1, while the; The datasheet gives no per-pin electrical limits beyond the device-wide ratings (inputs to 5.5 V, bu"+ ],+ "pages_sent": 12,+ "cost_usd": 0.0786,+ "at": "2026-10-08T00:38:57"+ },+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/sn74lvch245a.pdf",+ "pages": 44,+ "sha256": "d6a53fff1f569e05",+ "source_tier": "mfr"+ },+ "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": "sn74lvch245apwr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 6.5,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "sn74lvch245apwr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 6.5,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "5efb4569ae99a2d67d67ed1269d69442a6cd91a1e31043114338f4df26244f93",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}