component
ISO7221MDR
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
markdownISO7221MDR
Texas Instruments · Digital Isolators · SOIC-8
ISO7221MDR 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 | Power supply input for input-side isolation channels, 3V to 5.5V operating range. |
| 2 | OUTA | output | Isolated digital output for channel A, 4mA CMOS output stage. |
| 3 | INB | input | Isolated digital input for channel B with CMOS VCC/2 threshold and failsafe high on power loss. |
| 4 | GND1 | power_in | Ground reference for input-side power supply VCC1. |
| 5 | GND2 | power_in | Ground reference for output-side power supply VCC2. |
| 6 | OUTB | output | Isolated digital output for channel B, 4mA CMOS output stage. |
| 7 | INA | input | Isolated digital input for channel A with CMOS VCC/2 threshold and failsafe high on power loss. |
| 8 | VCC2 | power_in | Power supply input for output-side isolation channels, 3V to 5.5V operating range. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Signal Isolation Devices |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
ISO7221MDR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
iso7221mdr-etched.step/iso7221mdr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7221mdr.step/iso7221mdr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (39 pp, sha256
64d2f4d0c91c1ed3, retrieved 2026-09-24, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).