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SN74LVC2G157DCU3
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, VSSOP-8-0.5mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# SN74LVC2G157DCU3++**Texas Instruments** · Signal Switches, Multiplexers, Decoders · VSSOP-8-0.5mm++SN74LVC2G157DCU3 from Texas Instruments, in a VSSOP-8-0.5mm. 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 | A | input | Data input A; the datasheet gives the input voltage range as 0 V to 5.5 V. |+| 2 | B | input | Data input B; the datasheet gives the input voltage range as 0 V to 5.5 V. |+| 3 | Y | output | Inverted output (complement of Y, shown as Y-bar in the datasheet, which the text extraction drops); when the strobe G is high this output is high. Output voltage is limited to 0 V to VCC. |+| 4 | GND | power_in | Ground reference for the device. |+| 5 | Y | output | True data output; when the strobe G is high this output is low. Output voltage is limited to 0 V to VCC. |+| 6 | A/B | input | Selector input that chooses between data input A and data input B when the strobe G is low; input voltage range is 0 V to 5.5 V. |+| 7 | G | input | Common active-high strobe input; when high it forces Y low and the inverted output high, and when low the selected input is passed to the outputs. Input voltage range is 0 V to 5.5 V. |+| 8 | VCC | power_in | Positive supply; operating range is 1.65 V to 5.5 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VSSOP-8-0.5mm |+| Category | Logic |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `SN74LVC2G157DCU3`+- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`+- 3D model: VSSOP-8-0.5mm (KiCad packages3D, STEP)+- 3D model files: `sn74lvc2g157dcu3-etched.step` / `sn74lvc2g157dcu3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvc2g157dcu3.step` / `sn74lvc2g157dcu3.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/sn74lvc2g157) (28 pp, sha256 `d8feceb35335bfbc`, 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/sn74lvc2g157dcu3-datasheet.pdf)
page.jsonadded+201@@ -0,0 +1,201 @@+{+ "slug": "sn74lvc2g157dcu3",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Signal Switches, Multiplexers, Decoders, VSSOP-8-0.5mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "logic",+ "sn74lvc2g157dcu3",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "sn74lvc2g157dcu3.kicad_sym",+ "sn74lvc2g157dcu3.kicad_mod",+ "sn74lvc2g157dcu3.glb",+ "sn74lvc2g157dcu3.step",+ "sn74lvc2g157dcu3.lbr",+ "docs/hero.png",+ "docs/sn74lvc2g157dcu3-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "sn74lvc2g157dcu3-hero.glb",+ "sn74lvc2g157dcu3-hero.overlay.json"+ ],+ "component": {+ "mpn": "SN74LVC2G157DCU3",+ "manufacturer": "Texas Instruments",+ "package": "VSSOP-8-0.5mm",+ "pin_count": 8,+ "category": "Logic",+ "subcategory": "Signal Switches, Multiplexers, Decoders",+ "datasheet": "https://www.ti.com/cn/lit/gpn/sn74lvc2g157",+ "parts": {+ "symbol": "sn74lvc2g157dcu3.kicad_sym",+ "footprint": "sn74lvc2g157dcu3.kicad_mod",+ "model_3d": "sn74lvc2g157dcu3-hero.glb",+ "model_3d_plain": "sn74lvc2g157dcu3.glb",+ "model_3d_step": "sn74lvc2g157dcu3-etched.step",+ "model_3d_step_plain": "sn74lvc2g157dcu3.step",+ "lbr": "sn74lvc2g157dcu3.lbr"+ },+ "distributor_links": {+ "lcsc": "C1850269",+ "digikey": "296-SN74LVC2G157DCU3TR-ND",+ "mouser": "595-SN74LVC2G157DCU3"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T00:44:56Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-SN74LVC2G157DCU3TR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-SN74LVC2G157DCU3",+ "status": "found",+ "lifecycle": "End of Life"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "A",+ "type": "input",+ "description": "Data input A; the datasheet gives the input voltage range as 0 V to 5.5 V."+ },+ {+ "number": "2",+ "name": "B",+ "type": "input",+ "description": "Data input B; the datasheet gives the input voltage range as 0 V to 5.5 V."+ },+ {+ "number": "3",+ "name": "Y",+ "type": "output",+ "description": "Inverted output (complement of Y, shown as Y-bar in the datasheet, which the text extraction drops); when the strobe G is high this output is high. Output voltage is limited to 0 V to VCC."+ },+ {+ "number": "4",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference for the device."+ },+ {+ "number": "5",+ "name": "Y",+ "type": "output",+ "description": "True data output; when the strobe G is high this output is low. Output voltage is limited to 0 V to VCC."+ },+ {+ "number": "6",+ "name": "A/B",+ "type": "input",+ "description": "Selector input that chooses between data input A and data input B when the strobe G is low; input voltage range is 0 V to 5.5 V."+ },+ {+ "number": "7",+ "name": "G",+ "type": "input",+ "description": "Common active-high strobe input; when high it forces Y low and the inverted output high, and when low the selected input is passed to the outputs. Input voltage range is 0 V to 5.5 V."+ },+ {+ "number": "8",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply; operating range is 1.65 V to 5.5 V."+ }+ ],+ "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: Both outputs are printed as 'Y' in the pin table. The overbar on pin 3 is lost in text extraction. P; Only page 3 (Pin Configuration and Functions) was provided for the pinout. The DCU top-view drawing "+ ],+ "pages_sent": 8,+ "cost_usd": 0.0607,+ "at": "2026-10-08T00:44:39"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn74lvc2g157",+ "pages": 28,+ "sha256": "d8feceb35335bfbc",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "sn74lvc2g157dcu3.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 3.1,+ 2,+ 0.85+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "353552981eef35cb93635057d4aeb89aef22648c77af6fd095e328bfe6b834bd",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "sn74lvc2g157dcu3-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 3.1,+ 2,+ 0.85+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "fea846001dffd1b1194f285afa6a3bb2dd9412977fb4d13435494886711f795c",+ "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]"+ }+}