component
ISOW7742FQDFMRQ1
Public Made by Adomby adom
Texas Instruments Digital Isolators (With Power), SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownISOW7742FQDFMRQ1
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);isow7742fqdfmrq1.step/isow7742fqdfmrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (59 pp, sha256
5f94cde786001b58, retrieved 2026-10-03, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).