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ISO7731FDW

Public Made by Adom

by adom

Texas Instruments Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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iso7731fdw-etched.glb iso7731fdw: factory component page (tier=lcsc) · Ray 1d ago
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package.json iso7731fdw: LCSC part number C5216488 (was published as the bare integer) · Ray 8h ago
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ISO7731FDW

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); iso7731fdw.step / iso7731fdw.glb are 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, 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