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SN74AHC541QPWRQ1
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Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+57@@ -0,0 +1,57 @@+# SN74AHC541QPWRQ1++**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · TSSOP-20++SN74AHC541QPWRQ1 from Texas Instruments, in a TSSOP-20. 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 | OE1 | input | Active-low output enable input that enables buffered outputs Y1-Y8 when OE1=L and OE2=L, putting outputs into high-impedance state when OE1=H. |+| 2 | A1 | input | Data input to buffer/driver stage A1, buffered to output Y1 when outputs enabled (OE1=L and OE2=L). |+| 3 | A2 | input | Data input to buffer/driver stage A2, buffered to output Y2 when outputs enabled (OE1=L and OE2=L). |+| 4 | A3 | input | Data input to buffer/driver stage A3, buffered to output Y3 when outputs enabled (OE1=L and OE2=L). |+| 5 | A4 | input | Data input to buffer/driver stage A4, buffered to output Y4 when outputs enabled (OE1=L and OE2=L). |+| 6 | A5 | input | Data input to buffer/driver stage A5, buffered to output Y5 when outputs enabled (OE1=L and OE2=L). |+| 7 | A6 | input | Data input to buffer/driver stage A6, buffered to output Y6 when outputs enabled (OE1=L and OE2=L). |+| 8 | A7 | input | Data input to buffer/driver stage A7, buffered to output Y7 when outputs enabled (OE1=L and OE2=L). |+| 9 | A8 | input | Data input to buffer/driver stage A8, buffered to output Y8 when outputs enabled (OE1=L and OE2=L). |+| 10 | GND | power_in | Ground connection providing logic reference voltage of 0V. |+| 11 | Y8 | tri_state | Buffered output Y8, non-inverted copy of A8 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H. |+| 12 | Y7 | tri_state | Buffered output Y7, non-inverted copy of A7 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H. |+| 13 | Y6 | tri_state | Buffered output Y6, non-inverted copy of A6 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H. |+| 14 | Y5 | tri_state | Buffered output Y5, non-inverted copy of A5 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H. |+| 15 | Y4 | tri_state | Buffered output Y4, non-inverted copy of A4 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H. |+| 16 | Y3 | tri_state | Buffered output Y3, non-inverted copy of A3 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H. |+| 17 | Y2 | tri_state | Buffered output Y2, non-inverted copy of A2 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H. |+| 18 | Y1 | tri_state | Buffered output Y1, non-inverted copy of A1 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H. |+| 19 | OE2 | input | Active-low output enable input that enables buffered outputs Y1-Y8 when OE2=L and OE1=L, putting outputs into high-impedance state when OE2=H. |+| 20 | VCC | power_in | Positive power supply pin accepting 2.0V to 5.5V per recommended operating conditions. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `SN74AHC541QPWRQ1`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)+- 3D model files: `sn74ahc541qpwrq1-etched.step` / `sn74ahc541qpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74ahc541qpwrq1.step` / `sn74ahc541qpwrq1.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/sn74ahc541-q1) (24 pp, sha256 `2f0a0b9c531d6613`, retrieved 2026-10-06, 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-4-5-20251001` (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/sn74ahc541qpwrq1-datasheet.pdf)
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"sn74ahc541qpwrq1-hero.glb",+ "model_3d_plain": "sn74ahc541qpwrq1.glb",+ "model_3d_step": "sn74ahc541qpwrq1-etched.step",+ "model_3d_step_plain": "sn74ahc541qpwrq1.step",+ "lbr": "sn74ahc541qpwrq1.lbr"+ },+ "distributor_links": {+ "lcsc": 2864136,+ "digikey": "296-SN74AHC541QPWRQ1TR-ND",+ "mouser": "595-SN74AHC541QPWRQ1"+ },+ "distributor_check": {+ "checked_at": "2026-10-05T23:59:59Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-SN74AHC541QPWRQ1TR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-SN74AHC541QPWRQ1",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "OE1",+ "type": "input",+ "description": "Active-low output enable input that enables buffered outputs Y1-Y8 when OE1=L and OE2=L, putting outputs into high-impedance state when OE1=H."+ },+ {+ "number": "2",+ "name": "A1",+ "type": "input",+ "description": "Data input to buffer/driver stage A1, buffered to output Y1 when outputs enabled (OE1=L and OE2=L)."+ },+ {+ "number": "3",+ "name": "A2",+ "type": "input",+ "description": "Data input to buffer/driver stage A2, buffered to output Y2 when outputs enabled (OE1=L and OE2=L)."+ },+ {+ "number": "4",+ "name": "A3",+ "type": "input",+ "description": "Data input to buffer/driver stage A3, buffered to output Y3 when outputs enabled (OE1=L and OE2=L)."+ },+ {+ "number": "5",+ "name": "A4",+ "type": "input",+ "description": "Data input to buffer/driver stage A4, buffered to output Y4 when outputs enabled (OE1=L and OE2=L)."+ },+ {+ "number": "6",+ "name": "A5",+ "type": "input",+ "description": "Data input to buffer/driver stage A5, buffered to output Y5 when outputs enabled (OE1=L and OE2=L)."+ },+ {+ "number": "7",+ "name": "A6",+ "type": "input",+ "description": "Data input to buffer/driver stage A6, buffered to output Y6 when outputs enabled (OE1=L and OE2=L)."+ },+ {+ "number": "8",+ "name": "A7",+ "type": "input",+ "description": "Data input to buffer/driver stage A7, buffered to output Y7 when outputs enabled (OE1=L and OE2=L)."+ },+ {+ "number": "9",+ "name": "A8",+ "type": "input",+ "description": "Data input to buffer/driver stage A8, buffered to output Y8 when outputs enabled (OE1=L and OE2=L)."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground connection providing logic reference voltage of 0V."+ },+ {+ "number": "11",+ "name": "Y8",+ "type": "tri_state",+ "description": "Buffered output Y8, non-inverted copy of A8 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H."+ },+ {+ "number": "12",+ "name": "Y7",+ "type": "tri_state",+ "description": "Buffered output Y7, non-inverted copy of A7 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H."+ },+ {+ "number": "13",+ "name": "Y6",+ "type": "tri_state",+ "description": "Buffered output Y6, non-inverted copy of A6 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H."+ },+ {+ "number": "14",+ "name": "Y5",+ "type": "tri_state",+ "description": "Buffered output Y5, non-inverted copy of A5 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H."+ },+ {+ "number": "15",+ "name": "Y4",+ "type": "tri_state",+ "description": "Buffered output Y4, non-inverted copy of A4 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H."+ },+ {+ "number": "16",+ "name": "Y3",+ "type": "tri_state",+ "description": "Buffered output Y3, non-inverted copy of A3 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H."+ },+ {+ "number": "17",+ "name": "Y2",+ "type": "tri_state",+ "description": "Buffered output Y2, non-inverted copy of A2 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H."+ },+ {+ "number": "18",+ "name": "Y1",+ "type": "tri_state",+ "description": "Buffered output Y1, non-inverted copy of A1 input when outputs enabled (OE1=L and OE2=L), high-impedance when OE1=H or OE2=H."+ },+ {+ "number": "19",+ "name": "OE2",+ "type": "input",+ "description": "Active-low output enable input that enables buffered outputs Y1-Y8 when OE2=L and OE1=L, putting outputs into high-impedance state when OE2=H."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive power supply pin accepting 2.0V to 5.5V per recommended operating conditions."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 24,+ "cost_usd": 0.1414,+ "at": "2026-10-05T23:59:42"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn74ahc541-q1",+ "pages": 24,+ "sha256": "2f0a0b9c531d6613",+ "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"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}