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ISO7721FQDQ1
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
markdownISO7721FQDQ1
Texas Instruments · Digital Isolators · SOIC-8
ISO7721FQDQ1 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 positive supply voltage; operating voltage range 2.25V to 5.5V per section 6.3. |
| 2 | OUTA | output | Channel A digital output; sources and sinks up to 4mA at VCCO = 5V per section 6.9. |
| 3 | INB | input | Channel B input; accepts logic levels from 0V to VCCI with thresholds at 0.3×VCCI to 0.7×VCCI per section 6.9. |
| 4 | GND1 | power_in | Ground reference for input-side supply VCC1 per Table 5-1. |
| 5 | GND2 | power_in | Ground reference for output-side supply VCC2 per Table 5-1. |
| 6 | OUTB | output | Channel B digital output; sources and sinks up to 4mA at VCCO = 5V per section 6.9. |
| 7 | INA | input | Channel A input; accepts logic levels from 0V to VCCI with thresholds at 0.3×VCCI to 0.7×VCCI per section 6.9. |
| 8 | VCC2 | power_in | Output-side positive supply voltage; operating voltage range 2.25V to 5.5V per section 6.3. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Signal Isolation Devices |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
ISO7721FQDQ1 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
iso7721fqdq1-etched.step/iso7721fqdq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7721fqdq1.step/iso7721fqdq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (52 pp, sha256
fbb553de6ff2b6fe, 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).