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SN74HCS244QPWRQ1
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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 @@+# SN74HCS244QPWRQ1++**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · TSSOP-20++SN74HCS244QPWRQ1 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 | 1OE | input | Bank 1 output enable (active low); Schmitt-trigger input with 0-VCC voltage range |+| 2 | 1A1 | input | Bank 1 channel 1 input; Schmitt-trigger input with 0-VCC voltage range |+| 3 | 2Y4 | tri_state | Bank 2 channel 4 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply |+| 4 | 1A2 | input | Bank 1 channel 2 input; Schmitt-trigger input with 0-VCC voltage range |+| 5 | 2Y3 | tri_state | Bank 2 channel 3 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply |+| 6 | 1A3 | input | Bank 1 channel 3 input; Schmitt-trigger input with 0-VCC voltage range |+| 7 | 2Y2 | tri_state | Bank 2 channel 2 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply |+| 8 | 1A4 | input | Bank 1 channel 4 input; Schmitt-trigger input with 0-VCC voltage range |+| 9 | 2Y1 | tri_state | Bank 2 channel 1 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply |+| 10 | GND | power_in | Ground reference (0V) |+| 11 | 2A1 | input | Bank 2 channel 1 input; Schmitt-trigger input with 0-VCC voltage range |+| 12 | 1Y4 | tri_state | Bank 1 channel 4 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply |+| 13 | 2A2 | input | Bank 2 channel 2 input; Schmitt-trigger input with 0-VCC voltage range |+| 14 | 1Y3 | tri_state | Bank 1 channel 3 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply |+| 15 | 2A3 | input | Bank 2 channel 3 input; Schmitt-trigger input with 0-VCC voltage range |+| 16 | 1Y2 | tri_state | Bank 1 channel 2 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply |+| 17 | 2A4 | input | Bank 2 channel 4 input; Schmitt-trigger input with 0-VCC voltage range |+| 18 | 1Y1 | tri_state | Bank 1 channel 1 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply |+| 19 | 2OE | input | Bank 2 output enable (active low); Schmitt-trigger input with 0-VCC voltage range |+| 20 | VCC | power_in | Positive supply voltage; 2V to 6V recommended operating range |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `SN74HCS244QPWRQ1`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)+- 3D model files: `sn74hcs244qpwrq1-etched.step` / `sn74hcs244qpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74hcs244qpwrq1.step` / `sn74hcs244qpwrq1.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/sn74hcs244-q1) (25 pp, sha256 `856fd127df5278ef`, retrieved 2026-09-27, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/sn74hcs244qpwrq1-datasheet.pdf)
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Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "2",+ "name": "1A1",+ "type": "input",+ "description": "Bank 1 channel 1 input; Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "3",+ "name": "2Y4",+ "type": "tri_state",+ "description": "Bank 2 channel 4 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply"+ },+ {+ "number": "4",+ "name": "1A2",+ "type": "input",+ "description": "Bank 1 channel 2 input; Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "5",+ "name": "2Y3",+ "type": "tri_state",+ "description": "Bank 2 channel 3 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply"+ },+ {+ "number": "6",+ "name": "1A3",+ "type": "input",+ "description": "Bank 1 channel 3 input; Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "7",+ "name": "2Y2",+ "type": "tri_state",+ "description": "Bank 2 channel 2 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply"+ },+ {+ "number": "8",+ "name": "1A4",+ "type": "input",+ "description": "Bank 1 channel 4 input; Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "9",+ "name": "2Y1",+ "type": "tri_state",+ "description": "Bank 2 channel 1 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply"+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference (0V)"+ },+ {+ "number": "11",+ "name": "2A1",+ "type": "input",+ "description": "Bank 2 channel 1 input; Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "12",+ "name": "1Y4",+ "type": "tri_state",+ "description": "Bank 1 channel 4 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply"+ },+ {+ "number": "13",+ "name": "2A2",+ "type": "input",+ "description": "Bank 2 channel 2 input; Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "14",+ "name": "1Y3",+ "type": "tri_state",+ "description": "Bank 1 channel 3 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply"+ },+ {+ "number": "15",+ "name": "2A3",+ "type": "input",+ "description": "Bank 2 channel 3 input; Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "16",+ "name": "1Y2",+ "type": "tri_state",+ "description": "Bank 1 channel 2 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply"+ },+ {+ "number": "17",+ "name": "2A4",+ "type": "input",+ "description": "Bank 2 channel 4 input; Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "18",+ "name": "1Y1",+ "type": "tri_state",+ "description": "Bank 1 channel 1 tri-state output; VOH 5.4V minimum, VOL 0.33V maximum at ±7.8mA drive with 6V supply"+ },+ {+ "number": "19",+ "name": "2OE",+ "type": "input",+ "description": "Bank 2 output enable (active low); Schmitt-trigger input with 0-VCC voltage range"+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply voltage; 2V to 6V recommended operating range"+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 25,+ "cost_usd": 0.2862,+ "at": "2026-09-27T10:37:30"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn74hcs244-q1",+ "pages": 25,+ "sha256": "856fd127df5278ef",+ "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]"+ }+}