component
ISOW7821DWER
Public Made by Adomby adom
Texas Instruments Digital Isolators (With Power), 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
markdownISOW7821DWER
Texas Instruments · Digital Isolators (With Power) · SOIC-16-300mil
ISOW7821DWER 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 | VCC | power_in | Supply voltage for the primary side, referenced to GND1; recommended range is 3 V to 5.5 V. |
| 2 | GND1 | power_in | Ground connection for VCC (primary side). |
| 3 | INA | input | Input channel A (VCC-side logic input). |
| 4 | OUTB | output | Output channel B; the datasheet's pin table labels this pin as I, which conflicts with its name, so the direction shown here follows the name and should be verified. |
| 5 | NC | unconnected | Not connected. |
| 6 | NC | unconnected | Not connected. |
| 7 | EN1 | input | Output enable for side 1: side-1 outputs are enabled when EN1 is high or open and are high impedance when EN1 is low. |
| 8 | GND1 | power_in | Ground connection for VCC (primary side). |
| 9 | GND2 | power_in | Ground connection for VISO (isolated secondary side). |
| 10 | NC | unconnected | Not connected. |
| 11 | SEL | input | VISO selection pin: tie to VISO for a 5 V isolated output, or tie to GND2 or leave floating for 3.3 V. |
| 12 | NC | unconnected | Not connected. |
| 13 | INB | input | Input channel B (isolated-side logic input); the datasheet's pin table labels this pin as O, which conflicts with its name, so the direction shown here follows the name and should be verified. |
| 14 | OUTA | output | Output channel A (isolated-side logic output). |
| 15 | GND2 | power_in | Ground connection for VISO (isolated secondary side). |
| 16 | VISO | power_out | Isolated supply output from the internal DC-DC converter, set to 5 V or 3.3 V by the SEL pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISOW7821DWER - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
isow7821dwer-etched.step/isow7821dwer-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);isow7821dwer.step/isow7821dwer.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (43 pp, sha256
f5fa5e6f336a811b, retrieved 2026-10-10, 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).