component
ISO7831DWWR
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
markdownISO7831DWWR
Texas Instruments · Digital Isolators · SOIC-16-300mil
ISO7831DWWR 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 supply pin; VCC1 operates from 2.25 V to 5.5 V and should have a 0.1 µF decoupling capacitor within 2 mm of the pin. |
| 2 | GND1 | power_in | Ground connection for VCC1 (side 1); pin 2 and pin 8 are both side-1 grounds. |
| 3 | INA | input | Logic input for channel A, referenced to the side-1 supply VCCI; high-level input requires at least 0.7 × VCCI and low-level input must not exceed 0.3 × VCCI. |
| 4 | INB | input | Logic input for channel B, referenced to the side-1 supply VCCI; high-level input requires at least 0.7 × VCCI and low-level input must not exceed 0.3 × VCCI. |
| 5 | OUTC | output | Output for channel C; the output is high-impedance when the associated enable is low, and it drives VCCO-referenced levels with IOH/IOL limited to ±4 mA at 5 V, ±2 mA at 3.3 V and ±1 mA at 2.5 V. |
| 6 | NC | unconnected | Not connected internally; leave this pin unconnected. |
| 7 | EN1 | input | Output enable for side 1; high or open enables the side-1 outputs, and low places them in high impedance. |
| 8 | GND1 | power_in | Ground connection for VCC1 (side 1); pin 8 and pin 2 are both side-1 grounds. |
| 9 | GND2 | power_in | Ground connection for VCC2 (side 2); pin 9 and pin 15 are both side-2 grounds. |
| 10 | EN2 | input | Output enable for side 2; high or open enables the side-2 outputs, and low places them in high impedance. |
| 11 | NC | unconnected | Not connected internally; leave this pin unconnected. |
| 12 | INC | input | Logic input for channel C, referenced to the side-2 supply VCCI; high-level input requires at least 0.7 × VCCI and low-level input must not exceed 0.3 × VCCI. |
| 13 | OUTB | output | Output for channel B; the output is high-impedance when the associated enable is low, and it drives VCCO-referenced levels with IOH/IOL limited to ±4 mA at 5 V, ±2 mA at 3.3 V and ±1 mA at 2.5 V. |
| 14 | OUTA | output | Output for channel A; the output is high-impedance when the associated enable is low, and it drives VCCO-referenced levels with IOH/IOL limited to ±4 mA at 5 V, ±2 mA at 3.3 V and ±1 mA at 2.5 V. |
| 15 | GND2 | power_in | Ground connection for VCC2 (side 2); pin 15 and pin 9 are both side-2 grounds. |
| 16 | VCC2 | power_in | Side-2 supply pin; VCC2 operates from 2.25 V to 5.5 V and should have a 0.1 µF decoupling capacitor within 2 mm of the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISO7831DWWR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
iso7831dwwr-etched.step/iso7831dwwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7831dwwr.step/iso7831dwwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (38 pp, sha256
938fbc0ad53e0111, 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).