component
ISO7731FDW
Public Made by Adomby adom
Texas Instruments Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownISO7731FDW
Texas Instruments · Digital Isolators · SOIC-16
ISO7731FDW from Texas Instruments, in a SOIC-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 | VCC1 | power_in | Supply voltage input for input side of digital isolator; recommended operating range 2.25V to 5.5V. |
| 2 | GND1 | power_in | Ground connection for input side supply voltage VCC1. |
| 3 | INA | input | Digital input signal for isolation channel A. |
| 4 | INB | input | Digital input signal for isolation channel B. |
| 5 | OUTC | output | Digital output signal for isolation channel C. |
| 6 | NC | unconnected | Not connected internally. |
| 7 | EN1 | input | Output enable control for input side; enables outputs when high or open, places outputs in high-impedance when low. |
| 8 | GND1 | power_in | Ground connection for input side supply voltage VCC1. |
| 9 | GND2 | power_in | Ground connection for output side supply voltage VCC2. |
| 10 | EN2 | input | Output enable control for output side; enables outputs when high or open, places outputs in high-impedance when low. |
| 11 | NC | unconnected | Not connected internally. |
| 12 | INC | input | Digital input signal for isolation channel C. |
| 13 | OUTB | output | Digital output signal for isolation channel B. |
| 14 | OUTA | output | Digital output signal for isolation channel A. |
| 15 | GND2 | power_in | Ground connection for output side supply voltage VCC2. |
| 16 | VCC2 | power_in | Supply voltage input for output side of digital isolator; recommended operating range 2.25V to 5.5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISO7731FDW - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
iso7731fdw-etched.step/iso7731fdw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7731fdw.step/iso7731fdw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (49 pp, sha256
6d47a7b1277198b2, retrieved 2026-10-05, 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, 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).