component
SN75ALS172ADWR
Public Made by Adomby adom
Texas Instruments RS-485 / RS-422 ICs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+57@@ -0,0 +1,57 @@+# SN75ALS172ADWR++**Texas Instruments** · RS-485 / RS-422 ICs · SOIC-20-300mil++SN75ALS172ADWR from Texas Instruments, in a SOIC-20-300mil. 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 | Driver 1 input; the logic level on this pin sets the driver 1 outputs 1Y and 1Z when the drivers are enabled. |+| 2 | 1Y | output | Driver 1 non-inverted differential output, which is high-impedance when the drivers are disabled. |+| 3 | NC | unconnected | No internal connection on the DW package. |+| 4 | 1Z | output | Driver 1 inverted differential output, which is high-impedance when the drivers are disabled. |+| 5 | G | input | Active-high enable for all drivers; the outputs are high-impedance when G is low and the active-low enable G is inactive. |+| 6 | 2Z | output | Driver 2 inverted differential output, which is high-impedance when the drivers are disabled. |+| 7 | NC | unconnected | No internal connection on the DW package. |+| 8 | 2Y | output | Driver 2 non-inverted differential output, which is high-impedance when the drivers are disabled. |+| 9 | 2A | input | Driver 2 input; the logic level on this pin sets the driver 2 outputs 2Y and 2Z when the drivers are enabled. |+| 10 | GND | power_in | Ground pin for the device; all voltage limits are referenced to network ground. |+| 11 | 3A | input | Driver 3 input; the logic level on this pin sets the driver 3 outputs 3Y and 3Z when the drivers are enabled. |+| 12 | 3Y | output | Driver 3 non-inverted differential output, which is high-impedance when the drivers are disabled. |+| 13 | NC | unconnected | No internal connection on the DW package. |+| 14 | 3Z | output | Driver 3 inverted differential output, which is high-impedance when the drivers are disabled. |+| 15 | G | input | Active-low enable for all drivers (printed with an overbar in the datasheet); the outputs are enabled when this pin is low together with the active-high enable G. |+| 16 | 4Z | output | Driver 4 inverted differential output, which is high-impedance when the drivers are disabled. |+| 17 | NC | unconnected | No internal connection on the DW package. |+| 18 | 4Y | output | Driver 4 non-inverted differential output, which is high-impedance when the drivers are disabled. |+| 19 | 4A | input | Driver 4 input; the logic level on this pin sets the driver 4 outputs 4Y and 4Z when the drivers are enabled. |+| 20 | VCC | power_in | Power pin; recommended supply voltage is 4.75 V to 5.25 V (5 V nominal). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-20-300mil |+| Category | Interface |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `SN75ALS172ADWR`+- Footprint: `Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm`+- 3D model: SOIC-20-300mil (KiCad packages3D, STEP)+- 3D model files: `sn75als172adwr-etched.step` / `sn75als172adwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn75als172adwr.step` / `sn75als172adwr.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/sn75als172a) (19 pp, sha256 `7aced5ec4e5ab4bd`, retrieved 2026-10-08, 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-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/sn75als172adwr-datasheet.pdf)
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the logic level on this pin sets the driver 1 outputs 1Y and 1Z when the drivers are enabled."+ },+ {+ "number": "2",+ "name": "1Y",+ "type": "output",+ "description": "Driver 1 non-inverted differential output, which is high-impedance when the drivers are disabled."+ },+ {+ "number": "3",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection on the DW package."+ },+ {+ "number": "4",+ "name": "1Z",+ "type": "output",+ "description": "Driver 1 inverted differential output, which is high-impedance when the drivers are disabled."+ },+ {+ "number": "5",+ "name": "G",+ "type": "input",+ "description": "Active-high enable for all drivers; the outputs are high-impedance when G is low and the active-low enable G is inactive."+ },+ {+ "number": "6",+ "name": "2Z",+ "type": "output",+ "description": "Driver 2 inverted differential output, which is high-impedance when the drivers are disabled."+ },+ {+ "number": "7",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection on the DW package."+ },+ {+ "number": "8",+ "name": "2Y",+ "type": "output",+ "description": "Driver 2 non-inverted differential output, which is high-impedance when the drivers are disabled."+ },+ {+ "number": "9",+ "name": "2A",+ "type": "input",+ "description": "Driver 2 input; the logic level on this pin sets the driver 2 outputs 2Y and 2Z when the drivers are enabled."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground pin for the device; all voltage limits are referenced to network ground."+ },+ {+ "number": "11",+ "name": "3A",+ "type": "input",+ "description": "Driver 3 input; the logic level on this pin sets the driver 3 outputs 3Y and 3Z when the drivers are enabled."+ },+ {+ "number": "12",+ "name": "3Y",+ "type": "output",+ "description": "Driver 3 non-inverted differential output, which is high-impedance when the drivers are disabled."+ },+ {+ "number": "13",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection on the DW package."+ },+ {+ "number": "14",+ "name": "3Z",+ "type": "output",+ "description": "Driver 3 inverted differential output, which is high-impedance when the drivers are disabled."+ },+ {+ "number": "15",+ "name": "G",+ "type": "input",+ "description": "Active-low enable for all drivers (printed with an overbar in the datasheet); the outputs are enabled when this pin is low together with the active-high enable G."+ },+ {+ "number": "16",+ "name": "4Z",+ "type": "output",+ "description": "Driver 4 inverted differential output, which is high-impedance when the drivers are disabled."+ },+ {+ "number": "17",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection on the DW package."+ },+ {+ "number": "18",+ "name": "4Y",+ "type": "output",+ "description": "Driver 4 non-inverted differential output, which is high-impedance when the drivers are disabled."+ },+ {+ "number": "19",+ "name": "4A",+ "type": "input",+ "description": "Driver 4 input; the logic level on this pin sets the driver 4 outputs 4Y and 4Z when the drivers are enabled."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Power pin; recommended supply voltage is 4.75 V to 5.25 V (5 V nominal)."+ }+ ],+ "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 datasheet prints both enables as 'G'; pin 15 is the active-low enable (overbar in the original),; NC pins are listed as no internal connection per the datasheet; the pinout is taken from the DW (SOI; The datasheet's enable descriptions are one-line functional summaries; the exact enable logic is giv"+ ],+ "pages_sent": 19,+ "cost_usd": 0.0728,+ "at": "2026-10-08T16:00:58"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn75als172a",+ "pages": 19,+ "sha256": "7aced5ec4e5ab4bd",+ "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"+ },+ "models_3d": [+ {+ "file": "sn75als172adwr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 10.3,+ 12.8,+ 2.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "sn75als172adwr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 10.3,+ 12.8,+ 2.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "c6da673ea7e5d9417d9ef628d012b216fa90f53023a70203c65f1f41d8afa70a",+ "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]"+ }+}