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ISO7721DWR
Public Made by Adomby adom
Texas Instruments Digital Isolators, SOIC-16-300mil. Datasheet-verified pinout, 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
markdownISO7721DWR
Texas Instruments · Digital Isolators · SOIC-16-300mil
ISO7721DWR from Texas Instruments, in a SOIC-16-300mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND1 | power_in | Ground connection for VCC1 input stage; primary current return path and reference potential for input-side circuitry. |
| 2 | NC | unconnected | No internal connection; leave unconnected or tie to ground. |
| 3 | VCC1 | power_in | Power supply for input stage; 2.25V to 5.5V with 0.1µF decoupling capacitor required per design guidelines. |
| 4 | OUTA | output | Output channel A (non-inverted); VCCO − 0.4V (typ) high at 5V, 0.2-0.4V (max) low; drives 4mA at 5V with 100Mbps max data rate and 11ns propagation delay. |
| 5 | INB | input | Input channel B (inverted); accepts 0 to VCCI logic with 0.7×VCCI rising and 0.3×VCCI falling thresholds; 100kV/µs CMTI rated. |
| 6 | NC | unconnected | No internal connection; leave unconnected or tie to ground. |
| 7 | GND1 | power_in | Ground connection for VCC1 input stage; primary current return path and reference potential for input-side circuitry. |
| 8 | NC | unconnected | No internal connection; leave unconnected or tie to ground. |
| 9 | GND2 | power_in | Ground connection for VCC2 output stage; primary current return path and reference potential for output-side circuitry. |
| 10 | NC | unconnected | No internal connection; leave unconnected or tie to ground. |
| 11 | NC | unconnected | No internal connection; leave unconnected or tie to ground. |
| 12 | OUTB | output | Output channel B (inverted); VCCO − 0.4V (typ) high at 5V, 0.2-0.4V (max) low; drives 4mA at 5V with 100Mbps max data rate and 11ns propagation delay. |
| 13 | INA | input | Input channel A (non-inverted); accepts 0 to VCCI logic with 0.7×VCCI rising and 0.3×VCCI falling thresholds; 100kV/µs CMTI rated. |
| 14 | VCC2 | power_in | Power supply for output stage; 2.25V to 5.5V with 0.1µF decoupling capacitor required per design guidelines. |
| 15 | NC | unconnected | No internal connection; leave unconnected or tie to ground. |
| 16 | GND2 | power_in | Ground connection for VCC2 output stage; primary current return path and reference potential for output-side circuitry. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISO7721DWR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
iso7721dwr-etched.step/iso7721dwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7721dwr.step/iso7721dwr.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 2026-09-22, 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).