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ISO7721FDWV
Public Made by Adomby adom
Texas Instruments Digital Isolators, SOIC-8. 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
markdownISO7721FDWV
Texas Instruments · Digital Isolators · SOIC-8
ISO7721FDWV from Texas Instruments, in a SOIC-8. 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 | Input-side power supply, operating range 2.25V to 5.5V; decouple with 0.1μF capacitor to GND1. |
| 2 | OUTA | output | Non-inverting output from channel A through isolation barrier; drives −4mA at 5V, −2mA at 3.3V, or −1mA at 2.5V; propagation delay 11ns typical. |
| 3 | INB | input | Inverting input to channel B; accepts CMOS/LVCMOS logic, input high ≥0.7×VCCI, input low ≤0.3×VCCI. |
| 4 | GND1 | power_in | Input-side ground reference for VCC1; provides return path on primary side of 5000VRMS isolation barrier. |
| 5 | GND2 | power_in | Output-side ground reference for VCC2; provides return path on secondary side of 5000VRMS isolation barrier. |
| 6 | OUTB | output | Inverting output from channel B through isolation barrier; sinks 4mA at 5V, 2mA at 3.3V, or 1mA at 2.5V; propagation delay 11ns typical. |
| 7 | INA | input | Non-inverting input to channel A; accepts CMOS/LVCMOS logic, input high ≥0.7×VCCI, input low ≤0.3×VCCI. |
| 8 | VCC2 | power_in | Output-side power supply, operating range 2.25V to 5.5V; decouple with 0.1μF capacitor to GND2. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Signal Isolation Devices |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
ISO7721FDWV - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
iso7721fdwv-etched.step/iso7721fdwv-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7721fdwv.step/iso7721fdwv.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (51 pp, sha256
7158bdf150cc2c73, retrieved 2026-09-26, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).