component
ISO7731BDWR
Public Made by Adomby adom
Texas Instruments Digital Isolators, SOIC-16-300mil. 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
markdownISO7731BDWR
Texas Instruments · Digital Isolators · SOIC-16-300mil
ISO7731BDWR from Texas Instruments, in a SOIC-16-300mil. 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 | Side-1 (input-side) power supply; recommended operating range is 2.25 V to 5.5 V, and a 0.1 µF bypass capacitor should be placed as close to the pin as possible. |
| 2 | GND1 | power_in | Ground connection for VCC1 on the input side. |
| 3 | INA | input | Channel A logic input on side 1, referenced to VCC1. |
| 4 | INB | input | Channel B logic input on side 1, referenced to VCC1. |
| 5 | OUTC | output | Channel C (reverse-direction) output on side 1; it is high impedance when EN1 is low. |
| 6 | NC | unconnected | Not connected. |
| 7 | EN1 | input | Output enable for side 1: high or open enables the side-1 outputs, and low puts them in high impedance. |
| 8 | GND1 | power_in | Ground connection for VCC1 on the input side. |
| 9 | GND2 | power_in | Ground connection for VCC2 on the output side. |
| 10 | EN2 | input | Output enable for side 2: high or open enables the side-2 outputs, and low puts them in high impedance. |
| 11 | NC | unconnected | Not connected. |
| 12 | INC | input | Channel C logic input on side 2 (reverse-direction channel), referenced to VCC2. |
| 13 | OUTB | output | Channel B output on side 2; it is high impedance when EN2 is low. |
| 14 | OUTA | output | Channel A output on side 2; it is high impedance when EN2 is low. |
| 15 | GND2 | power_in | Ground connection for VCC2 on the output side. |
| 16 | VCC2 | power_in | Side-2 (output-side) power supply; recommended operating range is 2.25 V to 5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISO7731BDWR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
iso7731bdwr-etched.step/iso7731bdwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7731bdwr.step/iso7731bdwr.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 2026-10-08, 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-5-5(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).