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SN74ABT240APWR
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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 @@+# SN74ABT240APWR++**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · TSSOP-20++SN74ABT240APWR 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 | 1OE | input | Active-low output enable for buffer section 1; when low, outputs 1Y1 to 1Y4 pass inverted data from 1A1 to 1A4, and when high, they are in the high-impedance state. |+| 2 | 1A1 | input | Data input to buffer section 1, inverted to output 1Y1 when 1OE is low; unused inputs must be held at VCC or GND. |+| 3 | 2Y4 | tri_state | 3-state output of buffer section 2, the inverted version of 2A4 when 2OE is low and high-impedance when 2OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A. |+| 4 | 1A2 | input | Data input to buffer section 1, inverted to output 1Y2 when 1OE is low; unused inputs must be held at VCC or GND. |+| 5 | 2Y3 | tri_state | 3-state output of buffer section 2, the inverted version of 2A3 when 2OE is low and high-impedance when 2OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A. |+| 6 | 1A3 | input | Data input to buffer section 1, inverted to output 1Y3 when 1OE is low; unused inputs must be held at VCC or GND. |+| 7 | 2Y2 | tri_state | 3-state output of buffer section 2, the inverted version of 2A2 when 2OE is low and high-impedance when 2OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A. |+| 8 | 1A4 | input | Data input to buffer section 1, inverted to output 1Y4 when 1OE is low; unused inputs must be held at VCC or GND. |+| 9 | 2Y1 | tri_state | 3-state output of buffer section 2, the inverted version of 2A1 when 2OE is low and high-impedance when 2OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A. |+| 10 | GND | power_in | Ground reference for the device. |+| 11 | 2A1 | input | Data input to buffer section 2, inverted to output 2Y1 when 2OE is low; unused inputs must be held at VCC or GND. |+| 12 | 1Y4 | tri_state | 3-state output of buffer section 1, the inverted version of 1A4 when 1OE is low and high-impedance when 1OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A. |+| 13 | 2A2 | input | Data input to buffer section 2, inverted to output 2Y2 when 2OE is low; unused inputs must be held at VCC or GND. |+| 14 | 1Y3 | tri_state | 3-state output of buffer section 1, the inverted version of 1A3 when 1OE is low and high-impedance when 1OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A. |+| 15 | 2A3 | input | Data input to buffer section 2, inverted to output 2Y3 when 2OE is low; unused inputs must be held at VCC or GND. |+| 16 | 1Y2 | tri_state | 3-state output of buffer section 1, the inverted version of 1A2 when 1OE is low and high-impedance when 1OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A. |+| 17 | 2A4 | input | Data input to buffer section 2, inverted to output 2Y4 when 2OE is low; unused inputs must be held at VCC or GND. |+| 18 | 1Y1 | tri_state | 3-state output of buffer section 1, the inverted version of 1A1 when 1OE is low and high-impedance when 1OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A. |+| 19 | 2OE | input | Active-low output enable for buffer section 2; when low, outputs 2Y1 to 2Y4 pass inverted data from 2A1 to 2A4, and when high, they are in the high-impedance state. |+| 20 | VCC | power_in | Supply voltage, 4.5 V minimum to 5.5 V maximum per recommended operating conditions. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `SN74ABT240APWR`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)+- 3D model files: `sn74abt240apwr-etched.step` / `sn74abt240apwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74abt240apwr.step` / `sn74abt240apwr.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/sn74abt240a.pdf) (26 pp, sha256 `809f246e9ce5e1ce`, retrieved 2026-10-07, 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/sn74abt240apwr-datasheet.pdf)
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Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "logic",+ "sn74abt240apwr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "sn74abt240apwr.kicad_sym",+ "sn74abt240apwr.kicad_mod",+ "sn74abt240apwr.glb",+ "sn74abt240apwr.step",+ "sn74abt240apwr.lbr",+ "docs/hero.png",+ "docs/sn74abt240apwr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "sn74abt240apwr-hero.glb",+ "sn74abt240apwr-hero.overlay.json"+ ],+ "component": {+ "mpn": "SN74ABT240APWR",+ "manufacturer": "Texas Instruments",+ "package": "TSSOP-20",+ "pin_count": 20,+ "category": "Logic",+ "subcategory": "Buffers, Drivers, Receivers, Transceivers",+ "datasheet": "https://www.ti.com/lit/ds/symlink/sn74abt240a.pdf",+ "parts": {+ "symbol": "sn74abt240apwr.kicad_sym",+ "footprint": "sn74abt240apwr.kicad_mod",+ "model_3d": "sn74abt240apwr-hero.glb",+ "model_3d_plain": "sn74abt240apwr.glb",+ "model_3d_step": "sn74abt240apwr-etched.step",+ "model_3d_step_plain": "sn74abt240apwr.step",+ "lbr": "sn74abt240apwr.lbr"+ },+ "distributor_links": {+ "lcsc": "C2676095",+ "digikey": "296-3962-2-ND",+ "mouser": "595-SN74ABT240APWR"+ },+ "distributor_check": {+ "checked_at": "2026-10-07T23:33:02Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-3962-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-SN74ABT240APWR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "1OE",+ "type": "input",+ "description": "Active-low output enable for buffer section 1; when low, outputs 1Y1 to 1Y4 pass inverted data from 1A1 to 1A4, and when high, they are in the high-impedance state."+ },+ {+ "number": "2",+ "name": "1A1",+ "type": "input",+ "description": "Data input to buffer section 1, inverted to output 1Y1 when 1OE is low; unused inputs must be held at VCC or GND."+ },+ {+ "number": "3",+ "name": "2Y4",+ "type": "tri_state",+ "description": "3-state output of buffer section 2, the inverted version of 2A4 when 2OE is low and high-impedance when 2OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A."+ },+ {+ "number": "4",+ "name": "1A2",+ "type": "input",+ "description": "Data input to buffer section 1, inverted to output 1Y2 when 1OE is low; unused inputs must be held at VCC or GND."+ },+ {+ "number": "5",+ "name": "2Y3",+ "type": "tri_state",+ "description": "3-state output of buffer section 2, the inverted version of 2A3 when 2OE is low and high-impedance when 2OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A."+ },+ {+ "number": "6",+ "name": "1A3",+ "type": "input",+ "description": "Data input to buffer section 1, inverted to output 1Y3 when 1OE is low; unused inputs must be held at VCC or GND."+ },+ {+ "number": "7",+ "name": "2Y2",+ "type": "tri_state",+ "description": "3-state output of buffer section 2, the inverted version of 2A2 when 2OE is low and high-impedance when 2OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A."+ },+ {+ "number": "8",+ "name": "1A4",+ "type": "input",+ "description": "Data input to buffer section 1, inverted to output 1Y4 when 1OE is low; unused inputs must be held at VCC or GND."+ },+ {+ "number": "9",+ "name": "2Y1",+ "type": "tri_state",+ "description": "3-state output of buffer section 2, the inverted version of 2A1 when 2OE is low and high-impedance when 2OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference for the device."+ },+ {+ "number": "11",+ "name": "2A1",+ "type": "input",+ "description": "Data input to buffer section 2, inverted to output 2Y1 when 2OE is low; unused inputs must be held at VCC or GND."+ },+ {+ "number": "12",+ "name": "1Y4",+ "type": "tri_state",+ "description": "3-state output of buffer section 1, the inverted version of 1A4 when 1OE is low and high-impedance when 1OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A."+ },+ {+ "number": "13",+ "name": "2A2",+ "type": "input",+ "description": "Data input to buffer section 2, inverted to output 2Y2 when 2OE is low; unused inputs must be held at VCC or GND."+ },+ {+ "number": "14",+ "name": "1Y3",+ "type": "tri_state",+ "description": "3-state output of buffer section 1, the inverted version of 1A3 when 1OE is low and high-impedance when 1OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A."+ },+ {+ "number": "15",+ "name": "2A3",+ "type": "input",+ "description": "Data input to buffer section 2, inverted to output 2Y3 when 2OE is low; unused inputs must be held at VCC or GND."+ },+ {+ "number": "16",+ "name": "1Y2",+ "type": "tri_state",+ "description": "3-state output of buffer section 1, the inverted version of 1A2 when 1OE is low and high-impedance when 1OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A."+ },+ {+ "number": "17",+ "name": "2A4",+ "type": "input",+ "description": "Data input to buffer section 2, inverted to output 2Y4 when 2OE is low; unused inputs must be held at VCC or GND."+ },+ {+ "number": "18",+ "name": "1Y1",+ "type": "tri_state",+ "description": "3-state output of buffer section 1, the inverted version of 1A1 when 1OE is low and high-impedance when 1OE is high; high-drive, rated -32 mA IOH and 64 mA IOL for SN74ABT240A."+ },+ {+ "number": "19",+ "name": "2OE",+ "type": "input",+ "description": "Active-low output enable for buffer section 2; when low, outputs 2Y1 to 2Y4 pass inverted data from 2A1 to 2A4, and when high, they are in the high-impedance state."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply voltage, 4.5 V minimum to 5.5 V maximum per recommended operating conditions."+ }+ ],+ "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 top-view pin list in the text extraction is scrambled. Pin positions were rebuilt from the print; The datasheet gives no per-pin descriptions. The descriptions are built from the function table, the"+ ],+ "pages_sent": 26,+ "cost_usd": 0.099,+ "at": "2026-10-07T23:32:44"+ },+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/sn74abt240a.pdf",+ "pages": 26,+ "sha256": "809f246e9ce5e1ce",+ "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": "sn74abt240apwr.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": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "sn74abt240apwr-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": "a89d57704021982a253813461754c6ea568f5091c75bc7e2848f1d9df159cb98",+ "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]"+ }+}