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ISOW7742FQDFMRQ1
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Texas Instruments Digital Isolators (With Power), SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+56@@ -0,0 +1,56 @@+# ISOW7742FQDFMRQ1++**Texas Instruments** · Digital Isolators (With Power) · SOIC-20++ISOW7742FQDFMRQ1 from Texas Instruments, in a SOIC-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 | VIO | power_in | Side 1 logic supply, with a recommended range of 1.71 V to 5.5 V. |+| 2 | INA | input | Input channel A. |+| 3 | INB | input | Input channel B. |+| 4 | OUTC | output | Output channel C on ISOW7742-Q1. |+| 5 | OUTD | output | Output channel D. |+| 6 | GNDIO | power_in | Ground connection for VIO; GND1 and GNDIO need to be shorted on board. |+| 7 | EN_IO1 | input | Output Enable 1: high or open enables side 1 channel outputs; low puts them in high impedance and disables the side 1 input transmitters. |+| 8 | EN/FLT | bidirectional | Multi-function pin used either as power converter enable input (high to the VIO level enables, low at GND1 level disables) or as an active-low fault output needing a pull-up of 5 kΩ or greater. |+| 9 | VDD | power_in | Side 1 DC-DC converter power supply, with a range of 3 V to 5.5 V. |+| 10 | GND1 | power_in | Ground connection for VDD; GND1 and GNDIO need to be shorted on board. |+| 11 | GND2 | power_in | Ground connection for VISOOUT; GND2 and GISOIN can be shorted on board or connected through a ferrite bead. |+| 12 | VISOOUT | power_out | Isolated power converter output voltage; VISOIN and VISOOUT can be shorted on board or connected through a ferrite bead. |+| 13 | VSEL | input | VISOOUT selection pin: VISOOUT = 5 V when shorted to VISOOUT, 3.3 V when shorted to GND2. |+| 14 | EN_IO2 | input | Output Enable 2: high or open enables side 2 channel outputs; low puts them in high impedance and disables the side 2 input transmitters. |+| 15 | GISOIN | power_in | Ground connection for VISOIN; GND2 and GISOIN can be shorted on board or connected through a ferrite bead. |+| 16 | IND | input | Input channel D. |+| 17 | INC | input | Input channel C on ISOW7742-Q1. |+| 18 | OUTB | output | Output channel B. |+| 19 | OUTA | output | Output channel A. |+| 20 | VISOIN | power_in | Side 2 supply voltage for isolation channels; VISOIN and VISOOUT can be shorted on board or connected through a ferrite bead. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-20 |+| Category | Signal Isolation Devices |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `ISOW7742FQDFMRQ1`+- Footprint: `Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm`+- 3D model: SOIC-20 (KiCad packages3D, STEP)+- 3D model files: `isow7742fqdfmrq1-etched.step` / `isow7742fqdfmrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `isow7742fqdfmrq1.step` / `isow7742fqdfmrq1.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8597547903233900544) (59 pp, sha256 `5f94cde786001b58`, retrieved 2026-10-03, tier: lcsc)+- **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/isow7742fqdfmrq1-datasheet.pdf)
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GND1 and GNDIO need to be shorted on board."+ },+ {+ "number": "7",+ "name": "EN_IO1",+ "type": "input",+ "description": "Output Enable 1: high or open enables side 1 channel outputs; low puts them in high impedance and disables the side 1 input transmitters."+ },+ {+ "number": "8",+ "name": "EN/FLT",+ "type": "bidirectional",+ "description": "Multi-function pin used either as power converter enable input (high to the VIO level enables, low at GND1 level disables) or as an active-low fault output needing a pull-up of 5 kΩ or greater."+ },+ {+ "number": "9",+ "name": "VDD",+ "type": "power_in",+ "description": "Side 1 DC-DC converter power supply, with a range of 3 V to 5.5 V."+ },+ {+ "number": "10",+ "name": "GND1",+ "type": "power_in",+ "description": "Ground connection for VDD; GND1 and GNDIO need to be shorted on board."+ },+ {+ "number": "11",+ "name": "GND2",+ "type": "power_in",+ "description": "Ground connection for VISOOUT; GND2 and GISOIN can be shorted on board or connected through a ferrite bead."+ },+ {+ "number": "12",+ "name": "VISOOUT",+ "type": "power_out",+ "description": "Isolated power converter output voltage; VISOIN and VISOOUT can be shorted on board or connected through a ferrite bead."+ },+ {+ "number": "13",+ "name": "VSEL",+ "type": "input",+ "description": "VISOOUT selection pin: VISOOUT = 5 V when shorted to VISOOUT, 3.3 V when shorted to GND2."+ },+ {+ "number": "14",+ "name": "EN_IO2",+ "type": "input",+ "description": "Output Enable 2: high or open enables side 2 channel outputs; low puts them in high impedance and disables the side 2 input transmitters."+ },+ {+ "number": "15",+ "name": "GISOIN",+ "type": "power_in",+ "description": "Ground connection for VISOIN; GND2 and GISOIN can be shorted on board or connected through a ferrite bead."+ },+ {+ "number": "16",+ "name": "IND",+ "type": "input",+ "description": "Input channel D."+ },+ {+ "number": "17",+ "name": "INC",+ "type": "input",+ "description": "Input channel C on ISOW7742-Q1."+ },+ {+ "number": "18",+ "name": "OUTB",+ "type": "output",+ "description": "Output channel B."+ },+ {+ "number": "19",+ "name": "OUTA",+ "type": "output",+ "description": "Output channel A."+ },+ {+ "number": "20",+ "name": "VISOIN",+ "type": "power_in",+ "description": "Side 2 supply voltage for isolation channels; VISOIN and VISOOUT can be shorted on board or connected through a ferrite bead."+ }+ ],+ "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": 8,+ "cost_usd": 0.0851,+ "at": "2026-10-03T04:02:02"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8597547903233900544",+ "pages": 59,+ "sha256": "5f94cde786001b58",+ "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]"+ }+}