# ISO7321CQDQ1

**Texas Instruments** · Digital Isolators · SOIC-8

ISO7321CQDQ1 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 for the VCC1 (input) side; recommended supply range is 3 V to 5.5 V, and absolute maximum is 6 V. |
| 2 | OUTA | output | Output, channel A; recommended IOH of -4 mA and IOL of 4 mA. |
| 3 | INB | input | Input, channel B; VIH 2 V to 5.5 V and VIL 0 V to 0.8 V (TTL thresholds). |
| 4 | GND1 | power_in | Ground connection for VCC1. |
| 5 | GND2 | power_in | Ground connection for VCC2. |
| 6 | OUTB | output | Output, channel B; recommended IOH of -4 mA and IOL of 4 mA. |
| 7 | INA | input | Input, channel A; VIH 2 V to 5.5 V and VIL 0 V to 0.8 V (TTL thresholds). |
| 8 | VCC2 | power_in | Power supply for the VCC2 (output) side; recommended supply range is 3 V to 5.5 V, and absolute maximum is 6 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `ISO7321CQDQ1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `iso7321cqdq1-etched.step` / `iso7321cqdq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `iso7321cqdq1.step` / `iso7321cqdq1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/iso7321-q1) (27 pp, sha256 `36b7b45161a595d1`, retrieved 2026-10-08, 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 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (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](docs/iso7321cqdq1-datasheet.pdf)