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ISO7721QDRQ1

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Texas Instruments Digital Isolators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs iso7721qdrq1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
viewers iso7721qdrq1: viewers · Ray 12d ago
iso7721qdrq1-etched.fit.json iso7721qdrq1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
iso7721qdrq1-etched.glb iso7721qdrq1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
iso7721qdrq1-etched.step iso7721qdrq1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
iso7721qdrq1.glb Publish 0.1.0 · Ray 12d ago
iso7721qdrq1.kicad_mod Publish 0.1.0 · Ray 12d ago
iso7721qdrq1.kicad_sym Publish 0.1.0 · Ray 12d ago
iso7721qdrq1.lbr Publish 0.1.0 · Ray 12d ago
iso7721qdrq1.step Publish 0.1.0 · Ray 12d ago
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page.json Set visibility: public · Ray 12d ago
README.md Initial commit: component/iso7721qdrq1 · Ray 12d ago

ISO7721QDRQ1

Texas Instruments · Digital Isolators · SOIC-8

ISO7721QDRQ1 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 Primary-side power supply input with operating voltage range 2.25V to 5.5V.
2 OUTA output Isolated Channel A output with 11ns typical propagation delay and 4mA maximum drive current at 5V.
3 INB input Channel B digital input with high threshold at 0.7×VCCI and low threshold at 0.3×VCCI with 0.1-0.2×VCCI hysteresis.
4 GND1 power_in Ground reference for primary-side power supply and input logic circuits.
5 GND2 power_in Secondary-side ground reference isolated from GND1 by minimum 3000V RMS in D package.
6 OUTB output Isolated Channel B output with 11ns typical propagation delay and 4mA maximum drive current at 5V.
7 INA input Channel A digital input with high threshold at 0.7×VCCI and low threshold at 0.3×VCCI with 0.1-0.2×VCCI hysteresis.
8 VCC2 power_in Secondary-side power supply input with operating voltage range 2.25V to 5.5V independent from VCC1.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Signal Isolation Devices
Pins 8

CAD (KiCad official)

  • Symbol: ISO7721QDRQ1
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: iso7721qdrq1-etched.step / iso7721qdrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); iso7721qdrq1.step / iso7721qdrq1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (52 pp, sha256 fbb553de6ff2b6fe, retrieved 2026-09-24, 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, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-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).

Datasheet PDF