component
SN75ALS174ADWR
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 @@+# SN75ALS174ADWR++**Texas Instruments** · RS-485 / RS-422 ICs · SOIC-20-300mil++SN75ALS174ADWR 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 logic input; high level 2 V to VCC, low level 0 to 0.8 V. |+| 2 | 1Y | tri_state | Driver 1 non-inverting differential output, high-impedance when 1,2EN is low. |+| 3 | NC | unconnected | No internal connection. |+| 4 | 1Z | tri_state | Driver 1 inverting differential output, high-impedance when 1,2EN is low. |+| 5 | 1,2EN | input | Active-high enable for drivers 1 and 2; low puts outputs 1Y/1Z/2Y/2Z in high impedance. |+| 6 | 2Z | tri_state | Driver 2 inverting differential output, high-impedance when 1,2EN is low. |+| 7 | NC | unconnected | No internal connection. |+| 8 | 2Y | tri_state | Driver 2 non-inverting differential output, high-impedance when 1,2EN is low. |+| 9 | 2A | input | Driver 2 logic input; high level 2 V to VCC, low level 0 to 0.8 V. |+| 10 | GND | power_in | Ground; all voltage values are referenced to network GND. |+| 11 | 3A | input | Driver 3 logic input; high level 2 V to VCC, low level 0 to 0.8 V. |+| 12 | 3Y | tri_state | Driver 3 non-inverting differential output, high-impedance when 3,4EN is low. |+| 13 | NC | unconnected | No internal connection. |+| 14 | 3Z | tri_state | Driver 3 inverting differential output, high-impedance when 3,4EN is low. |+| 15 | 3,4EN | input | Active-high enable for drivers 3 and 4; low puts outputs 3Y/3Z/4Y/4Z in high impedance. |+| 16 | 4Z | tri_state | Driver 4 inverting differential output, high-impedance when 3,4EN is low. |+| 17 | NC | unconnected | No internal connection. |+| 18 | 4Y | tri_state | Driver 4 non-inverting differential output, high-impedance when 3,4EN is low. |+| 19 | 4A | input | Driver 4 logic input; high level 2 V to VCC, low level 0 to 0.8 V. |+| 20 | VCC | power_in | Supply voltage, 4.75 V to 5.25 V recommended (absolute maximum 7 V). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-20-300mil |+| Category | Interface |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `SN75ALS174ADWR`+- Footprint: `Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm`+- 3D model: SOIC-20-300mil (KiCad packages3D, STEP)+- 3D model files: `sn75als174adwr-etched.step` / `sn75als174adwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn75als174adwr.step` / `sn75als174adwr.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/sn75als174a) (22 pp, sha256 `ec23df57df066878`, 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/sn75als174adwr-datasheet.pdf)
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The pin map is c"+ ],+ "pages_sent": 22,+ "cost_usd": 0.0881,+ "at": "2026-10-08T17:04:27"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn75als174a",+ "pages": 22,+ "sha256": "ec23df57df066878",+ "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": "sn75als174adwr.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": "sn75als174adwr-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": "43960c7ff90f7467850403ab7c8b81a495d2d290be42e8187dec844cd46d2574",+ "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]"+ }+}