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74AC11138PWR
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Texas Instruments Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+52@@ -0,0 +1,52 @@+# 74AC11138PWR++**Texas Instruments** · Signal Switches, Multiplexers, Decoders · TSSOP-16++74AC11138PWR from Texas Instruments, in a TSSOP-16. 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 | Y1 | output | Active-low decoder data output Y1, driven low when its address is selected and the enables are active (Section 6.3 function table). |+| 2 | Y2 | output | Active-low decoder data output Y2, driven low when its address is selected and the enables are active (Section 6.3 function table). |+| 3 | Y3 | output | Active-low decoder data output Y3, driven low when its address is selected and the enables are active (Section 6.3 function table). |+| 4 | GND | power_in | Ground reference for the device. |+| 5 | Y4 | output | Active-low decoder data output Y4, driven low when its address is selected and the enables are active (Section 6.3 function table). |+| 6 | Y5 | output | Active-low decoder data output Y5, driven low when its address is selected and the enables are active (Section 6.3 function table). |+| 7 | Y6 | output | Active-low decoder data output Y6, driven low when its address is selected and the enables are active (Section 6.3 function table). |+| 8 | Y7 | output | Active-low decoder data output Y7, driven low when its address is selected and the enables are active (Section 6.3 function table). |+| 9 | G2B | input | Active-low enable input; must be low (together with G2A low and G1 high) for the decoder outputs to be active. |+| 10 | G2A | input | Active-low enable input; must be low (together with G2B low and G1 high) for the decoder outputs to be active. |+| 11 | G1 | input | Active-high enable input; must be high (together with G2A and G2B low) for the decoder outputs to be active. |+| 12 | VCC | power_in | Supply pin; recommended supply range is 3 V to 5.5 V, bypassed with a 0.1-µF capacitor placed as close as possible to the terminal for a single-supply device. |+| 13 | C | input | Binary select input C; together with A and B it selects which one of the eight outputs is addressed. |+| 14 | B | input | Binary select input B; together with A and C it selects which one of the eight outputs is addressed. |+| 15 | A | input | Binary select input A (least significant select bit); together with B and C it selects which one of the eight outputs is addressed. |+| 16 | Y0 | output | Active-low decoder data output Y0, driven low when its address is selected and the enables are active (Section 6.3 function table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-16 |+| Category | Logic |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `74AC11138PWR`+- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`+- 3D model: TSSOP-16 (KiCad packages3D, STEP)+- 3D model files: `74ac11138pwr-etched.step` / `74ac11138pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74ac11138pwr.step` / `74ac11138pwr.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/74ac11138.pdf) (27 pp, sha256 `1cc12b26f1f9c243`, retrieved 2026-10-08, tier: manufacturer)+- **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/74ac11138pwr-datasheet.pdf)
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must be low (together with G2A low and G1 high) for the decoder outputs to be active."+ },+ {+ "number": "10",+ "name": "G2A",+ "type": "input",+ "description": "Active-low enable input; must be low (together with G2B low and G1 high) for the decoder outputs to be active."+ },+ {+ "number": "11",+ "name": "G1",+ "type": "input",+ "description": "Active-high enable input; must be high (together with G2A and G2B low) for the decoder outputs to be active."+ },+ {+ "number": "12",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply pin; recommended supply range is 3 V to 5.5 V, bypassed with a 0.1-µF capacitor placed as close as possible to the terminal for a single-supply device."+ },+ {+ "number": "13",+ "name": "C",+ "type": "input",+ "description": "Binary select input C; together with A and B it selects which one of the eight outputs is addressed."+ },+ {+ "number": "14",+ "name": "B",+ "type": "input",+ "description": "Binary select input B; together with A and C it selects which one of the eight outputs is addressed."+ },+ {+ "number": "15",+ "name": "A",+ "type": "input",+ "description": "Binary select input A (least significant select bit); together with B and C it selects which one of the eight outputs is addressed."+ },+ {+ "number": "16",+ "name": "Y0",+ "type": "output",+ "description": "Active-low decoder data output Y0, driven low when its address is selected and the enables are active (Section 6.3 function table)."+ }+ ],+ "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: Pinout is taken from Table 3-1 and Figure 3-1 (D, N, or PW Package, Top View), which the datasheet s"+ ],+ "pages_sent": 27,+ "cost_usd": 0.0761,+ "at": "2026-10-08T16:05:07"+ },+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/74ac11138.pdf",+ "pages": 27,+ "sha256": "1cc12b26f1f9c243",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 16,+ "described": 16,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "74ac11138pwr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 5,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "74ac11138pwr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 5,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "2b7c5f68d2b6de6135cf5becabf88d982077c98d8d8768a74c3e2df6d9cdf341",+ "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]"+ }+}