component
CD74HC154M
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-24-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+60@@ -0,0 +1,60 @@+# CD74HC154M++**Texas Instruments** · Signal Switches, Multiplexers, Decoders · SOIC-24-300mil++CD74HC154M from Texas Instruments, in a SOIC-24-300mil. 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 | Y0 | output | Active-low decoded output 0, driven low when address A3-A0 = 0000 and both enables are low. |+| 2 | Y1 | output | Active-low decoded output 1, driven low when address A3-A0 = 0001 and both enables are low. |+| 3 | Y2 | output | Active-low decoded output 2, driven low when address A3-A0 = 0010 and both enables are low. |+| 4 | Y3 | output | Active-low decoded output 3, driven low when address A3-A0 = 0011 and both enables are low. |+| 5 | Y4 | output | Active-low decoded output 4, driven low when address A3-A0 = 0100 and both enables are low. |+| 6 | Y5 | output | Active-low decoded output 5, driven low when address A3-A0 = 0101 and both enables are low. |+| 7 | Y6 | output | Active-low decoded output 6, driven low when address A3-A0 = 0110 and both enables are low. |+| 8 | Y7 | output | Active-low decoded output 7, driven low when address A3-A0 = 0111 and both enables are low. |+| 9 | Y8 | output | Active-low decoded output 8, driven low when address A3-A0 = 1000 and both enables are low. |+| 10 | Y9 | output | Active-low decoded output 9, driven low when address A3-A0 = 1001 and both enables are low. |+| 11 | Y10 | output | Active-low decoded output 10, driven low when address A3-A0 = 1010 and both enables are low. |+| 12 | GND | power_in | Ground (0 V) reference pin. |+| 13 | Y11 | output | Active-low decoded output 11, driven low when address A3-A0 = 1011 and both enables are low. |+| 14 | Y12 | output | Active-low decoded output 12, driven low when address A3-A0 = 1100 and both enables are low. |+| 15 | Y13 | output | Active-low decoded output 13, driven low when address A3-A0 = 1101 and both enables are low. |+| 16 | Y14 | output | Active-low decoded output 14, driven low when address A3-A0 = 1110 and both enables are low. |+| 17 | Y15 | output | Active-low decoded output 15, driven low when address A3-A0 = 1111 and both enables are low. |+| 18 | E1 | input | Enable input 1; a high level forces all outputs high, and it can serve as the data input for demultiplexing while E2 is held low. |+| 19 | E2 | input | Enable input 2; a high level forces all outputs high, and it can serve as the data input for demultiplexing while E1 is held low. |+| 20 | A3 | input | Address select input A3 (most significant bit) selecting one of outputs Y0 to Y15. |+| 21 | A2 | input | Address select input A2 selecting one of outputs Y0 to Y15. |+| 22 | A1 | input | Address select input A1 selecting one of outputs Y0 to Y15. |+| 23 | A0 | input | Address select input A0 (least significant bit) selecting one of outputs Y0 to Y15. |+| 24 | VCC | power_in | Positive supply; 2V to 6V for HC types, with absolute maximum of 7V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-24-300mil |+| Category | Logic |+| Pins | 24 |++## CAD (KiCad official)++- Symbol: `CD74HC154M`+- Footprint: `Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm`+- 3D model: SOIC-24-300mil (KiCad packages3D, STEP)+- 3D model files: `cd74hc154m-etched.step` / `cd74hc154m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cd74hc154m.step` / `cd74hc154m.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/cd74hc154) (14 pp, sha256 `280e5cce6eb56861`, retrieved 2026-10-08, tier: lcsc)+- **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/cd74hc154m-datasheet.pdf)
page.jsonadded+297@@ -0,0 +1,297 @@+{+ "slug": "cd74hc154m",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-24-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "logic",+ "cd74hc154m",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "cd74hc154m.kicad_sym",+ "cd74hc154m.kicad_mod",+ "cd74hc154m.glb",+ "cd74hc154m.step",+ "cd74hc154m.lbr",+ "docs/hero.png",+ "docs/cd74hc154m-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "cd74hc154m-hero.glb",+ "cd74hc154m-hero.overlay.json"+ ],+ "component": {+ "mpn": "CD74HC154M",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-24-300mil",+ "pin_count": 24,+ "category": "Logic",+ "subcategory": "Signal Switches, Multiplexers, Decoders",+ "datasheet": "https://www.ti.com/cn/lit/gpn/cd74hc154",+ "parts": {+ "symbol": "cd74hc154m.kicad_sym",+ "footprint": "cd74hc154m.kicad_mod",+ "model_3d": "cd74hc154m-hero.glb",+ "model_3d_plain": "cd74hc154m.glb",+ "model_3d_step": "cd74hc154m-etched.step",+ "model_3d_step_plain": "cd74hc154m.step",+ "lbr": "cd74hc154m.lbr"+ },+ "distributor_links": {+ "lcsc": "C1547087",+ "digikey": "296-9182-5-ND",+ "mouser": "595-CD74HC154M"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T15:38:47Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-9182-5-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "595-CD74HC154M",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "Y0",+ "type": "output",+ "description": "Active-low decoded output 0, driven low when address A3-A0 = 0000 and both enables are low."+ },+ {+ "number": "2",+ "name": "Y1",+ "type": "output",+ "description": "Active-low decoded output 1, driven low when address A3-A0 = 0001 and both enables are low."+ },+ {+ "number": "3",+ "name": "Y2",+ "type": "output",+ "description": "Active-low decoded output 2, driven low when address A3-A0 = 0010 and both enables are low."+ },+ {+ "number": "4",+ "name": "Y3",+ "type": "output",+ "description": "Active-low decoded output 3, driven low when address A3-A0 = 0011 and both enables are low."+ },+ {+ "number": "5",+ "name": "Y4",+ "type": "output",+ "description": "Active-low decoded output 4, driven low when address A3-A0 = 0100 and both enables are low."+ },+ {+ "number": "6",+ "name": "Y5",+ "type": "output",+ "description": "Active-low decoded output 5, driven low when address A3-A0 = 0101 and both enables are low."+ },+ {+ "number": "7",+ "name": "Y6",+ "type": "output",+ "description": "Active-low decoded output 6, driven low when address A3-A0 = 0110 and both enables are low."+ },+ {+ "number": "8",+ "name": "Y7",+ "type": "output",+ "description": "Active-low decoded output 7, driven low when address A3-A0 = 0111 and both enables are low."+ },+ {+ "number": "9",+ "name": "Y8",+ "type": "output",+ "description": "Active-low decoded output 8, driven low when address A3-A0 = 1000 and both enables are low."+ },+ {+ "number": "10",+ "name": "Y9",+ "type": "output",+ "description": "Active-low decoded output 9, driven low when address A3-A0 = 1001 and both enables are low."+ },+ {+ "number": "11",+ "name": "Y10",+ "type": "output",+ "description": "Active-low decoded output 10, driven low when address A3-A0 = 1010 and both enables are low."+ },+ {+ "number": "12",+ "name": "GND",+ "type": "power_in",+ "description": "Ground (0 V) reference pin."+ },+ {+ "number": "13",+ "name": "Y11",+ "type": "output",+ "description": "Active-low decoded output 11, driven low when address A3-A0 = 1011 and both enables are low."+ },+ {+ "number": "14",+ "name": "Y12",+ "type": "output",+ "description": "Active-low decoded output 12, driven low when address A3-A0 = 1100 and both enables are low."+ },+ {+ "number": "15",+ "name": "Y13",+ "type": "output",+ "description": "Active-low decoded output 13, driven low when address A3-A0 = 1101 and both enables are low."+ },+ {+ "number": "16",+ "name": "Y14",+ "type": "output",+ "description": "Active-low decoded output 14, driven low when address A3-A0 = 1110 and both enables are low."+ },+ {+ "number": "17",+ "name": "Y15",+ "type": "output",+ "description": "Active-low decoded output 15, driven low when address A3-A0 = 1111 and both enables are low."+ },+ {+ "number": "18",+ "name": "E1",+ "type": "input",+ "description": "Enable input 1; a high level forces all outputs high, and it can serve as the data input for demultiplexing while E2 is held low."+ },+ {+ "number": "19",+ "name": "E2",+ "type": "input",+ "description": "Enable input 2; a high level forces all outputs high, and it can serve as the data input for demultiplexing while E1 is held low."+ },+ {+ "number": "20",+ "name": "A3",+ "type": "input",+ "description": "Address select input A3 (most significant bit) selecting one of outputs Y0 to Y15."+ },+ {+ "number": "21",+ "name": "A2",+ "type": "input",+ "description": "Address select input A2 selecting one of outputs Y0 to Y15."+ },+ {+ "number": "22",+ "name": "A1",+ "type": "input",+ "description": "Address select input A1 selecting one of outputs Y0 to Y15."+ },+ {+ "number": "23",+ "name": "A0",+ "type": "input",+ "description": "Address select input A0 (least significant bit) selecting one of outputs Y0 to Y15."+ },+ {+ "number": "24",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply; 2V to 6V for HC types, with absolute maximum of 7V."+ }+ ],+ "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 pinout text is scrambled in extraction. Pins 13–24 were mapped by reversing the TOP VIEW label o; The mechanical drawing in the text (MCDI004A) is for the CERDIP J package, not the SOIC. The SOIC bo; The TI package addendum lists CD74HC154M (the MPN requested) as Obsolete with no orderable quantity."+ ],+ "pages_sent": 14,+ "cost_usd": 0.0775,+ "at": "2026-10-08T15:38:30"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/cd74hc154",+ "pages": 14,+ "sha256": "280e5cce6eb56861",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 24,+ "described": 24,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "cd74hc154m.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 10.3,+ 15.4,+ 2.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "4b0d20f82f5b0124fecfe11c941274a3c865a30f7baee8b8fadd7df55972d4cd",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "cd74hc154m-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 10.3,+ 15.4,+ 2.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "90897f878e37ea5077aa10979426c1c7912114b3785ed36927c397813537e2f1",+ "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]"+ }+}