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SN74LVC540APWT
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+57@@ -0,0 +1,57 @@+# SN74LVC540APWT++**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · TSSOP-20++SN74LVC540APWT 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 | OE1 | input | Output Enable 1 (active low) that enables outputs when low with OE2 low and disables to high impedance when high. |+| 2 | A1 | input | Channel 1 input accepting input voltage from 0V to 5.5V. |+| 3 | A2 | input | Channel 2 input accepting input voltage from 0V to 5.5V. |+| 4 | A3 | input | Channel 3 input accepting input voltage from 0V to 5.5V. |+| 5 | A4 | input | Channel 4 input accepting input voltage from 0V to 5.5V. |+| 6 | A5 | input | Channel 5 input accepting input voltage from 0V to 5.5V. |+| 7 | A6 | input | Channel 6 input accepting input voltage from 0V to 5.5V. |+| 8 | A7 | input | Channel 7 input accepting input voltage from 0V to 5.5V. |+| 9 | A8 | input | Channel 8 input accepting input voltage from 0V to 5.5V. |+| 10 | GND | power_in | Ground providing reference voltage for the device. |+| 11 | Y8 | tri_state | Channel 8 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage. |+| 12 | Y7 | tri_state | Channel 7 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage. |+| 13 | Y6 | tri_state | Channel 6 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage. |+| 14 | Y5 | tri_state | Channel 5 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage. |+| 15 | Y4 | tri_state | Channel 4 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage. |+| 16 | Y3 | tri_state | Channel 3 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage. |+| 17 | Y2 | tri_state | Channel 2 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage. |+| 18 | Y1 | tri_state | Channel 1 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage. |+| 19 | OE2 | input | Output Enable 2 (active low) that enables outputs when low with OE1 low and disables to high impedance when high. |+| 20 | VCC | power_in | Positive power supply requiring 1.65V to 3.6V operating voltage. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `SN74LVC540APWT`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)+- 3D model files: `sn74lvc540apwt-etched.step` / `sn74lvc540apwt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvc540apwt.step` / `sn74lvc540apwt.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/sn74lvc540a) (41 pp, sha256 `c6e028cbd21e8c7e`, retrieved 2026-10-05, 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 0.3`, 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/sn74lvc540apwt-datasheet.pdf)
page.jsonadded+230@@ -0,0 +1,230 @@+{+ "slug": "sn74lvc540apwt",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "logic",+ "sn74lvc540apwt",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "sn74lvc540apwt.kicad_sym",+ "sn74lvc540apwt.kicad_mod",+ "sn74lvc540apwt.glb",+ "sn74lvc540apwt.step",+ "sn74lvc540apwt.lbr",+ "docs/hero.png",+ "docs/sn74lvc540apwt-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "sn74lvc540apwt-hero.glb",+ "sn74lvc540apwt-hero.overlay.json"+ ],+ "component": {+ "mpn": "SN74LVC540APWT",+ "manufacturer": "Texas Instruments",+ "package": "TSSOP-20",+ "pin_count": 20,+ "category": "Logic",+ "subcategory": "Buffers, Drivers, Receivers, Transceivers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/sn74lvc540a",+ "parts": {+ "symbol": "sn74lvc540apwt.kicad_sym",+ "footprint": "sn74lvc540apwt.kicad_mod",+ "model_3d": "sn74lvc540apwt-hero.glb",+ "model_3d_plain": "sn74lvc540apwt.glb",+ "model_3d_step": "sn74lvc540apwt-etched.step",+ "model_3d_step_plain": "sn74lvc540apwt.step",+ "lbr": "sn74lvc540apwt.lbr"+ },+ "distributor_links": {+ "lcsc": 1848205,+ "digikey": "296-SN74LVC540APWTTR-ND",+ "mouser": "595-SN74LVC540APWT"+ },+ "distributor_check": {+ "checked_at": "2026-10-05T23:50:17Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-SN74LVC540APWTTR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-SN74LVC540APWT",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "OE1",+ "type": "input",+ "description": "Output Enable 1 (active low) that enables outputs when low with OE2 low and disables to high impedance when high."+ },+ {+ "number": "2",+ "name": "A1",+ "type": "input",+ "description": "Channel 1 input accepting input voltage from 0V to 5.5V."+ },+ {+ "number": "3",+ "name": "A2",+ "type": "input",+ "description": "Channel 2 input accepting input voltage from 0V to 5.5V."+ },+ {+ "number": "4",+ "name": "A3",+ "type": "input",+ "description": "Channel 3 input accepting input voltage from 0V to 5.5V."+ },+ {+ "number": "5",+ "name": "A4",+ "type": "input",+ "description": "Channel 4 input accepting input voltage from 0V to 5.5V."+ },+ {+ "number": "6",+ "name": "A5",+ "type": "input",+ "description": "Channel 5 input accepting input voltage from 0V to 5.5V."+ },+ {+ "number": "7",+ "name": "A6",+ "type": "input",+ "description": "Channel 6 input accepting input voltage from 0V to 5.5V."+ },+ {+ "number": "8",+ "name": "A7",+ "type": "input",+ "description": "Channel 7 input accepting input voltage from 0V to 5.5V."+ },+ {+ "number": "9",+ "name": "A8",+ "type": "input",+ "description": "Channel 8 input accepting input voltage from 0V to 5.5V."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground providing reference voltage for the device."+ },+ {+ "number": "11",+ "name": "Y8",+ "type": "tri_state",+ "description": "Channel 8 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."+ },+ {+ "number": "12",+ "name": "Y7",+ "type": "tri_state",+ "description": "Channel 7 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."+ },+ {+ "number": "13",+ "name": "Y6",+ "type": "tri_state",+ "description": "Channel 6 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."+ },+ {+ "number": "14",+ "name": "Y5",+ "type": "tri_state",+ "description": "Channel 5 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."+ },+ {+ "number": "15",+ "name": "Y4",+ "type": "tri_state",+ "description": "Channel 4 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."+ },+ {+ "number": "16",+ "name": "Y3",+ "type": "tri_state",+ "description": "Channel 3 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."+ },+ {+ "number": "17",+ "name": "Y2",+ "type": "tri_state",+ "description": "Channel 2 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."+ },+ {+ "number": "18",+ "name": "Y1",+ "type": "tri_state",+ "description": "Channel 1 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."+ },+ {+ "number": "19",+ "name": "OE2",+ "type": "input",+ "description": "Output Enable 2 (active low) that enables outputs when low with OE1 low and disables to high impedance when high."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive power supply requiring 1.65V to 3.6V operating voltage."+ }+ ],+ "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": [],+ "pages_sent": 18,+ "cost_usd": 0.185,+ "at": "2026-10-05T23:50:01"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn74lvc540a",+ "pages": 41,+ "sha256": "c6e028cbd21e8c7e",+ "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]"+ }+}