SN74LV244ADBR

@@ -0,0 +1,124 @@+# SN74LV244ADBR++**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · SSOP-20++SN74LV244ADBR from Texas Instruments, in a SSOP-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 | Output enable for the first four-bit buffer section (1Y1 to 1Y4); the extracted text does not state the enable polarity. |+| 2 | 1A1 | input | Data input to buffer 1 of the first section, which drives output 1Y1 when 1OE is enabled; absolute input voltage limits are -0.5 V to 7 V (page 4). |+| 3 | 2Y4 | output | Three-state output of buffer 4 of the second section, driven from 2A4; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4). |+| 4 | 1A2 | input | Data input to buffer 2 of the first section, which drives output 1Y2; absolute input voltage limits are -0.5 V to 7 V (page 4). |+| 5 | 2Y3 | output | Three-state output of buffer 3 of the second section, driven from 2A3; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4). |+| 6 | 1A3 | input | Data input to buffer 3 of the first section, which drives output 1Y3; absolute input voltage limits are -0.5 V to 7 V (page 4). |+| 7 | 2Y2 | output | Three-state output of buffer 2 of the second section, driven from 2A2; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4). |+| 8 | 1A4 | input | Data input to buffer 4 of the first section, which drives output 1Y4; absolute input voltage limits are -0.5 V to 7 V (page 4). |+| 9 | 2Y1 | output | Three-state output of buffer 1 of the second section, driven from 2A1; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4). |+| 10 | GND | power_in | Ground reference pin for the device. |+| 11 | 2A1 | input | Data input to buffer 1 of the second section, which drives output 2Y1; absolute input voltage limits are -0.5 V to 7 V (page 4). |+| 12 | 1Y4 | output | Three-state output of buffer 4 of the first section, driven from 1A4; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4). |+| 13 | 2A2 | input | Data input to buffer 2 of the second section, which drives output 2Y2; absolute input voltage limits are -0.5 V to 7 V (page 4). |+| 14 | 1Y3 | output | Three-state output of buffer 3 of the first section, driven from 1A3; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4). |+| 15 | 2A3 | input | Data input to buffer 3 of the second section, which drives output 2Y3; absolute input voltage limits are -0.5 V to 7 V (page 4). |+| 16 | 1Y2 | output | Three-state output of buffer 2 of the first section, driven from 1A2; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4). |+| 17 | 2A4 | input | Data input to buffer 4 of the second section, which drives output 2Y4; absolute input voltage limits are -0.5 V to 7 V (page 4). |+| 18 | 1Y1 | output | Three-state output of buffer 1 of the first section, driven from 1A1; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4). |+| 19 | 2OE | input | Output enable for the second four-bit buffer section (2Y1 to 2Y4); the extracted text does not state the enable polarity. |+| 20 | VCC | power_in | Supply pin; the device operates from 2 V to 5.5 V (page 1), and the absolute maximum supply is -0.5 V to 7 V (page 4). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-20 |+| Category | Logic |+| Pins | 20 |++## Electrical characteristics++Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).++| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |+|---|---|---|---|---|---|---|---|+| Supply voltage | VCC | -0.5 |  | 7 | V |  | 4 |+| Input voltage | VI | -0.5 |  | 7 | V |  | 4 |+| Voltage range applied to any output in the high-impedance or power-off state | VO | -0.5 |  | 7 | V |  | 4 |+| Output voltage | VO | -0.5 |  |  | V | Max printed as VCC + 0.5; footnote 3: value limited to 5.5-V maximum | 4 |+| Input clamp current | IIK | -20 |  |  | mA | VI < 0 | 4 |+| Output clamp current | IOK | -50 |  |  | mA | VO < 0 | 4 |+| Continuous output current | IO | -35 |  | 35 | mA | VO = 0 to VCC | 4 |+| Continuous current through VCC or GND |  | -70 |  | 70 | mA |  | 4 |+| Junction temperature | Tj | -65 |  | 150 | °C |  | 4 |+| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |+| Supply voltage | VCC | 2 |  | 5.5 | V |  | 5 |+| High-level input voltage | VIH | 1.5 |  |  | V | VCC = 2 V | 5 |+| Low-level input voltage | VIL |  |  | 0.5 | V | VCC = 2 V | 5 |+| Input voltage | VI | 0 |  | 5.5 | V |  | 5 |+| Output voltage | VO | 0 |  |  | V | High or low state; max printed as VCC | 5 |+| Output voltage | VO | 0 |  | 5.5 | V | 3-state | 5 |+| High-level output current | IOH | -50 |  |  | µA | VCC = 2 V | 5 |+| High-level output current | IOH | -2 |  |  | mA | VCC = 2.3 V to 2.7 V | 5 |+| High-level output current | IOH | -8 |  |  | mA | VCC = 3 V to 3.6 V | 5 |+| High-level output current | IOH | -16 |  |  | mA | VCC = 4.5 V to 5.5 V | 5 |+| Low-level output current | IOL |  |  | 50 | µA | VCC = 2 V | 5 |+| Low-level output current | IOL |  |  | 2 | mA | VCC = 2.3 V to 2.7 V | 5 |+| Low-level output current | IOL |  |  | 8 | mA | VCC = 3 V to 3.6 V | 5 |+| Low-level output current | IOL |  |  | 16 | mA | VCC = 4.5 V to 5.5 V | 5 |+| Input transition rise or fall rate | Δt/Δv |  |  | 200 | ns/V | VCC = 2.3 V to 2.7 V | 5 |+| Input transition rise or fall rate | Δt/Δv |  |  | 100 | ns/V | VCC = 3 V to 3.6 V | 5 |+| Input transition rise or fall rate | Δt/Δv |  |  | 20 | ns/V | VCC = 4.5 V to 5.5 V | 5 |+| Operating free-air temperature | TA | -40 |  | 125 | °C |  | 5 |+| High level output voltage | VOH | 2 |  |  | V | IOH = -2 mA; VCC = 2.3 V | 7 |+| High level output voltage | VOH | 2.48 |  |  | V | IOH = -8 mA; VCC = 3 V | 7 |+| High level output voltage | VOH | 3.8 |  |  | V | IOH = 16 mA; VCC = 4.5 V | 7 |+| Low level output voltage | VOL |  |  | 0.1 | V | IOL = 50 µA; VCC = 2 V to 5.5 V | 7 |+| Low level output voltage | VOL |  |  | 0.4 | V | IOL = 2 mA; VCC = 2.3 V | 7 |+| Low level output voltage | VOL |  |  | 0.44 | V | IOL = 8 mA; VCC = 3 V | 7 |+| Low level output voltage | VOL |  |  | 0.55 | V | IOL = 16 mA; VCC = 4.5 V | 7 |+| Input leakage current | II | -1 |  | 1 | µA | VI = 5.5 V or GND; VCC = 0 to 5.5 V | 7 |+| Off-state (high-impedance state) output current | IOZ | -5 |  | 5 | µA | VO = VCC or GND; VCC = 5.5 V | 7 |+| Supply current | ICC |  |  | 20 | µA | VI = VCC or GND, IO = 0; VCC = 5.5 V | 7 |+| Input/output power-off leakage current | Ioff |  |  | 5 | µA | VI or VO = 0 to 5.5 V; VCC = 0 | 7 |+| Propagation delay time, A to Y | tpd | 1 |  | 15 | ns | CL = 15 pF; VCC = 2.5 V ± 0.2 V; -40°C to 125°C | 8 |+| Propagation delay time, A to Y | tpd | 1 |  | 18 | ns | CL = 50 pF; VCC = 2.5 V ± 0.2 V; -40°C to 125°C | 8 |+| Enable time, OE to Y | ten | 1 |  | 17 | ns | CL = 15 pF; VCC = 2.5 V ± 0.2 V; -40°C to 125°C | 8 |+| Enable time, OE to Y | ten | 1 |  | 21 | ns | CL = 50 pF; VCC = 2.5 V ± 0.2 V; -40°C to 125°C | 8 |+| Disable time, OE to Y | tdis | 1 |  | 16 | ns | CL = 15 pF; VCC = 2.5 V ± 0.2 V; -40°C to 125°C | 8 |+| Disable time, OE to Y | tdis | 1 |  | 21 | ns | CL = 50 pF; VCC = 2.5 V ± 0.2 V; -40°C to 125°C | 8 |+| Propagation delay time, A to Y | tpd | 1 |  | 10 | ns | CL = 15 pF; VCC = 3.3 V ± 0.3 V; -40°C to 125°C | 8 |+| Propagation delay time, A to Y | tpd | 1 |  | 13.5 | ns | CL = 50 pF; VCC = 3.3 V ± 0.3 V; -40°C to 125°C | 8 |+| Enable time, OE to Y | ten | 1 |  | 12.5 | ns | CL = 15 pF; VCC = 3.3 V ± 0.3 V; -40°C to 125°C | 8 |+| Enable time, OE to Y | ten | 1 |  | 16 | ns | CL = 50 pF; VCC = 3.3 V ± 0.3 V; -40°C to 125°C | 8 |+| Disable time, OE to Y | tdis | 1 |  | 13 | ns | CL = 15 pF; VCC = 3.3 V ± 0.3 V; -40°C to 125°C | 8 |+| Disable time, OE to Y | tdis | 1 |  | 18 | ns | CL = 50 pF; VCC = 3.3 V ± 0.3 V; -40°C to 125°C | 8 |+| Propagation delay time, A to Y | tpd | 1 |  | 6.5 | ns | CL = 15 pF; VCC = 5 V ± 0.5 V; -40°C to 125°C | 8 |+| Propagation delay time, A to Y | tpd | 1 |  | 8.5 | ns | CL = 50 pF; VCC = 5 V ± 0.5 V; -40°C to 125°C | 8 |+| Enable time, OE to Y | ten | 1 |  | 8.5 | ns | CL = 15 pF; VCC = 5 V ± 0.5 V; -40°C to 125°C | 8 |+| Enable time, OE to Y | ten | 1 |  | 10.5 | ns | CL = 50 pF; VCC = 5 V ± 0.5 V; -40°C to 125°C | 8 |+| Disable time, OE to Y | tdis | 1 |  | 13.5 | ns | CL = 15 pF; VCC = 5 V ± 0.5 V; -40°C to 125°C | 8 |+| Disable time, OE to Y | tdis | 1 |  | 15.5 | ns | CL = 50 pF; VCC = 5 V ± 0.5 V; -40°C to 125°C | 8 |+| Junction-to-ambient thermal resistance (DB SSOP) | RθJA |  | 94.7 |  | °C/W |  | 5 |+| Junction-to-case (top) thermal resistance (DB SSOP) | RθJC(top) |  | 56.7 |  | °C/W |  | 5 |+| Junction-to-board thermal resistance (DB SSOP) | RθJB |  | 49.9 |  | °C/W |  | 5 |++## CAD (KiCad official)++- Symbol: `SN74LV244ADBR`+- Footprint: `Adom_Gen:Texas_Instruments_SN74`+- 3D model: SSOP-20 (KiCad packages3D, STEP)+- 3D model files: `sn74lv244adbr-etched.step` / `sn74lv244adbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lv244adbr.step` / `sn74lv244adbr.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/sn74lv244adbr.pdf) (43 pp, sha256 `ee9a8c6b17f23c55`, retrieved 2026-10-18, tier: manufacturer)+- **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-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/sn74lv244adbr-datasheet.pdf)

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Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "logic",+    "sn74lv244adbr",+    "factory-2.0.0",+    "extractor-text"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "sn74lv244adbr.kicad_sym",+    "sn74lv244adbr.kicad_mod",+    "sn74lv244adbr.glb",+    "sn74lv244adbr.step",+    "sn74lv244adbr.lbr",+    "docs/hero.png",+    "docs/sn74lv244adbr-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "component": {+    "mpn": "SN74LV244ADBR",+    "manufacturer": "Texas Instruments",+    "package": "SSOP-20",+    "pin_count": 20,+    "category": "Logic",+    "subcategory": "Buffers, Drivers, Receivers, Transceivers",+    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74lv244adbr.pdf",+    "parts": {+      "symbol": "sn74lv244adbr.kicad_sym",+      "footprint": "sn74lv244adbr.kicad_mod",+      "model_3d": "sn74lv244adbr-etched.glb",+      "model_3d_plain": "sn74lv244adbr.glb",+      "model_3d_step": "sn74lv244adbr-etched.step",+      "model_3d_step_plain": "sn74lv244adbr.step",+      "lbr": "sn74lv244adbr.lbr"+    },+    "distributor_links": {+      "lcsc": "C2676031",+      "digikey": "296-3804-2-ND",+      "mouser": "595-SN74LV244ADBR"+    },+    "distributor_check": {+      "checked_at": "2026-10-18T06:13:40Z",+      "source": "Component Ocean /api/assign-pns",+      "digikey": {+        "pn": "296-3804-2-ND",+        "status": "found"+      },+      "mouser": {+        "pn": "595-SN74LV244ADBR",+        "status": "found"+      }+    },+    "pins": [+      {+        "number": "1",+        "name": "1OE",+        "type": "input",+        "description": "Output enable for the first four-bit buffer section (1Y1 to 1Y4); the extracted text does not state the enable polarity."+      },+      {+        "number": "2",+        "name": "1A1",+        "type": "input",+        "description": "Data input to buffer 1 of the first section, which drives output 1Y1 when 1OE is enabled; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "3",+        "name": "2Y4",+        "type": "output",+        "description": "Three-state output of buffer 4 of the second section, driven from 2A4; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "4",+        "name": "1A2",+        "type": "input",+        "description": "Data input to buffer 2 of the first section, which drives output 1Y2; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "5",+        "name": "2Y3",+        "type": "output",+        "description": "Three-state output of buffer 3 of the second section, driven from 2A3; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "6",+        "name": "1A3",+        "type": "input",+        "description": "Data input to buffer 3 of the first section, which drives output 1Y3; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "7",+        "name": "2Y2",+        "type": "output",+        "description": "Three-state output of buffer 2 of the second section, driven from 2A2; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "8",+        "name": "1A4",+        "type": "input",+        "description": "Data input to buffer 4 of the first section, which drives output 1Y4; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "9",+        "name": "2Y1",+        "type": "output",+        "description": "Three-state output of buffer 1 of the second section, driven from 2A1; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "10",+        "name": "GND",+        "type": "power_in",+        "description": "Ground reference pin for the device."+      },+      {+        "number": "11",+        "name": "2A1",+        "type": "input",+        "description": "Data input to buffer 1 of the second section, which drives output 2Y1; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "12",+        "name": "1Y4",+        "type": "output",+        "description": "Three-state output of buffer 4 of the first section, driven from 1A4; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "13",+        "name": "2A2",+        "type": "input",+        "description": "Data input to buffer 2 of the second section, which drives output 2Y2; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "14",+        "name": "1Y3",+        "type": "output",+        "description": "Three-state output of buffer 3 of the first section, driven from 1A3; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "15",+        "name": "2A3",+        "type": "input",+        "description": "Data input to buffer 3 of the second section, which drives output 2Y3; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "16",+        "name": "1Y2",+        "type": "output",+        "description": "Three-state output of buffer 2 of the first section, driven from 1A2; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "17",+        "name": "2A4",+        "type": "input",+        "description": "Data input to buffer 4 of the second section, which drives output 2Y4; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "18",+        "name": "1Y1",+        "type": "output",+        "description": "Three-state output of buffer 1 of the first section, driven from 1A1; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "19",+        "name": "2OE",+        "type": "input",+        "description": "Output enable for the second four-bit buffer section (2Y1 to 2Y4); the extracted text does not state the enable polarity."+      },+      {+        "number": "20",+        "name": "VCC",+        "type": "power_in",+        "description": "Supply pin; the device operates from 2 V to 5.5 V (page 1), and the absolute maximum supply is -0.5 V to 7 V (page 4)."+      }+    ],+    "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 extracted text gives only the pin names and the generic 'Output enable' label for 1OE and 2OE. I; The pin-to-function mapping (which input drives which output) comes from the logic diagram on page 1; The pin table on page 3 is shared by the DB, DGV, DW, NS, PW and DGS packages. The DB (SSOP-20) assi"+        ],+        "pages_sent": 8,+        "cost_usd": 0.0509,+        "at": "2026-10-18T06:08:38"+      },+      "datasheet": {+        "url": "https://www.ti.com/lit/ds/symlink/sn74lv244adbr.pdf",+        "pages": 43,+        "sha256": "ee9a8c6b17f23c55",+        "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": "sn74lv244adbr.step",+        "role": "plain",+        "up": "Z",+        "units": "mm",+        "origin": "footprint origin = pad-pattern centre",+        "seat": "z = 0",+        "extents_mm": [+          5.3,+          10.2,+          1.98+        ],+        "zmin_mm": 0.02,+        "centre_offset_mm": 0.0,+        "footprint_binding": "identity",+        "sha256": "6dff36ebd77080baba066b7aca3416ba1a817c310d24eec7f7cd42b41d1e0c8d",+        "checked": "2026-10-18",+        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+      },+      {+        "file": "sn74lv244adbr-etched.step",+        "role": "eda",+        "up": "Z",+        "units": "mm",+        "origin": "footprint origin = pad-pattern centre",+        "seat": "z = 0",+        "extents_mm": [+          5.3,+          10.2,+          1.98+        ],+        "zmin_mm": 0.02,+        "centre_offset_mm": 0.0,+        "footprint_binding": "identity",+        "sha256": "803bd2cabbedbe323b5d42809ae062007ff703c9ccbf414db78733cf749b075b",+        "checked": "2026-10-18",+        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+      }+    ]+  }+}

@@ -0,0 +1,269 @@+{+  "slug": "sn74lv244adbr",+  "version": "0.1.0",+  "type": "component",+  "description": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, SSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "logic",+    "sn74lv244adbr",+    "factory-2.0.0",+    "extractor-text"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "sn74lv244adbr.kicad_sym",+    "sn74lv244adbr.kicad_mod",+    "sn74lv244adbr.glb",+    "sn74lv244adbr.step",+    "sn74lv244adbr.lbr",+    "docs/hero.png",+    "docs/sn74lv244adbr-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "component": {+    "mpn": "SN74LV244ADBR",+    "manufacturer": "Texas Instruments",+    "package": "SSOP-20",+    "pin_count": 20,+    "category": "Logic",+    "subcategory": "Buffers, Drivers, Receivers, Transceivers",+    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74lv244adbr.pdf",+    "parts": {+      "symbol": "sn74lv244adbr.kicad_sym",+      "footprint": "sn74lv244adbr.kicad_mod",+      "model_3d": "sn74lv244adbr-etched.glb",+      "model_3d_plain": "sn74lv244adbr.glb",+      "model_3d_step": "sn74lv244adbr-etched.step",+      "model_3d_step_plain": "sn74lv244adbr.step",+      "lbr": "sn74lv244adbr.lbr"+    },+    "distributor_links": {+      "lcsc": "C2676031",+      "digikey": "296-3804-2-ND",+      "mouser": "595-SN74LV244ADBR"+    },+    "distributor_check": {+      "checked_at": "2026-10-18T06:13:40Z",+      "source": "Component Ocean /api/assign-pns",+      "digikey": {+        "pn": "296-3804-2-ND",+        "status": "found"+      },+      "mouser": {+        "pn": "595-SN74LV244ADBR",+        "status": "found"+      }+    },+    "pins": [+      {+        "number": "1",+        "name": "1OE",+        "type": "input",+        "description": "Output enable for the first four-bit buffer section (1Y1 to 1Y4); the extracted text does not state the enable polarity."+      },+      {+        "number": "2",+        "name": "1A1",+        "type": "input",+        "description": "Data input to buffer 1 of the first section, which drives output 1Y1 when 1OE is enabled; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "3",+        "name": "2Y4",+        "type": "output",+        "description": "Three-state output of buffer 4 of the second section, driven from 2A4; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "4",+        "name": "1A2",+        "type": "input",+        "description": "Data input to buffer 2 of the first section, which drives output 1Y2; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "5",+        "name": "2Y3",+        "type": "output",+        "description": "Three-state output of buffer 3 of the second section, driven from 2A3; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "6",+        "name": "1A3",+        "type": "input",+        "description": "Data input to buffer 3 of the first section, which drives output 1Y3; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "7",+        "name": "2Y2",+        "type": "output",+        "description": "Three-state output of buffer 2 of the second section, driven from 2A2; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "8",+        "name": "1A4",+        "type": "input",+        "description": "Data input to buffer 4 of the first section, which drives output 1Y4; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "9",+        "name": "2Y1",+        "type": "output",+        "description": "Three-state output of buffer 1 of the second section, driven from 2A1; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "10",+        "name": "GND",+        "type": "power_in",+        "description": "Ground reference pin for the device."+      },+      {+        "number": "11",+        "name": "2A1",+        "type": "input",+        "description": "Data input to buffer 1 of the second section, which drives output 2Y1; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "12",+        "name": "1Y4",+        "type": "output",+        "description": "Three-state output of buffer 4 of the first section, driven from 1A4; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "13",+        "name": "2A2",+        "type": "input",+        "description": "Data input to buffer 2 of the second section, which drives output 2Y2; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "14",+        "name": "1Y3",+        "type": "output",+        "description": "Three-state output of buffer 3 of the first section, driven from 1A3; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "15",+        "name": "2A3",+        "type": "input",+        "description": "Data input to buffer 3 of the second section, which drives output 2Y3; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "16",+        "name": "1Y2",+        "type": "output",+        "description": "Three-state output of buffer 2 of the first section, driven from 1A2; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "17",+        "name": "2A4",+        "type": "input",+        "description": "Data input to buffer 4 of the second section, which drives output 2Y4; absolute input voltage limits are -0.5 V to 7 V (page 4)."+      },+      {+        "number": "18",+        "name": "1Y1",+        "type": "output",+        "description": "Three-state output of buffer 1 of the first section, driven from 1A1; continuous output current is limited to ±35 mA for VO = 0 to VCC (page 4)."+      },+      {+        "number": "19",+        "name": "2OE",+        "type": "input",+        "description": "Output enable for the second four-bit buffer section (2Y1 to 2Y4); the extracted text does not state the enable polarity."+      },+      {+        "number": "20",+        "name": "VCC",+        "type": "power_in",+        "description": "Supply pin; the device operates from 2 V to 5.5 V (page 1), and the absolute maximum supply is -0.5 V to 7 V (page 4)."+      }+    ],+    "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 extracted text gives only the pin names and the generic 'Output enable' label for 1OE and 2OE. 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The DB (SSOP-20) assi"+        ],+        "pages_sent": 8,+        "cost_usd": 0.0509,+        "at": "2026-10-18T06:08:38"+      },+      "datasheet": {+        "url": "https://www.ti.com/lit/ds/symlink/sn74lv244adbr.pdf",+        "pages": 43,+        "sha256": "ee9a8c6b17f23c55",+        "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": "sn74lv244adbr.step",+        "role": "plain",+        "up": "Z",+        "units": "mm",+        "origin": "footprint origin = pad-pattern centre",+        "seat": "z = 0",+        "extents_mm": [+          5.3,+          10.2,+          1.98+        ],+        "zmin_mm": 0.02,+        "centre_offset_mm": 0,+        "footprint_binding": "identity",+        "sha256": "6dff36ebd77080baba066b7aca3416ba1a817c310d24eec7f7cd42b41d1e0c8d",+        "checked": "2026-10-18",+        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+      },+      {+        "file": "sn74lv244adbr-etched.step",+        "role": "eda",+        "up": "Z",+        "units": "mm",+        "origin": "footprint origin = pad-pattern centre",+        "seat": "z = 0",+        "extents_mm": [+          5.3,+          10.2,+          1.98+        ],+        "zmin_mm": 0.02,+        "centre_offset_mm": 0,+        "footprint_binding": "identity",+        "sha256": "803bd2cabbedbe323b5d42809ae062007ff703c9ccbf414db78733cf749b075b",+        "checked": "2026-10-18",+        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+      }+    ]+  },+  "visibility": "public",+  "org": "adom",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file

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gate="G$1" pin="2Y4" pad="3"/>+        <connect gate="G$1" pin="1A2" pad="4"/>+        <connect gate="G$1" pin="2Y3" pad="5"/>+        <connect gate="G$1" pin="1A3" pad="6"/>+        <connect gate="G$1" pin="2Y2" pad="7"/>+        <connect gate="G$1" pin="1A4" pad="8"/>+        <connect gate="G$1" pin="2Y1" pad="9"/>+        <connect gate="G$1" pin="GND" pad="10"/>+        <connect gate="G$1" pin="VCC" pad="20"/>+        <connect gate="G$1" pin="2OE" pad="19"/>+        <connect gate="G$1" pin="1Y1" pad="18"/>+        <connect gate="G$1" pin="2A4" pad="17"/>+        <connect gate="G$1" pin="1Y2" pad="16"/>+        <connect gate="G$1" pin="2A3" pad="15"/>+        <connect gate="G$1" pin="1Y3" pad="14"/>+        <connect gate="G$1" pin="2A2" pad="13"/>+        <connect gate="G$1" pin="1Y4" pad="12"/>+        <connect gate="G$1" pin="2A1" pad="11"/>+      </connects>+      <technologies><technology name=""/></technologies>+    </device>+  </devices>+</deviceset>+</devicesets>+</library>+</drawing>+</eagle>\ No newline at end of file

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