ISO7721DWVR

@@ -0,0 +1,51 @@+# ISO7721DWVR++**Texas Instruments** · Digital Isolators · SOIC-8++ISO7721DWVR from Texas Instruments, in a SOIC-8. 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 | VCC1 | power_in | Power supply for side 1 (input for channel B, output for channel A). Operating range 2.25 V to 5.5 V referenced to GND1. Decouple with a low-ESR ceramic capacitor (e.g. 0.1 µF) close to the pin. |+| 2 | OUTA | output | Digital output of channel A on side 1. Channel A is the reverse channel; this pin mirrors the logic level applied to INA on side 2. Drives push-pull CMOS levels referenced to VCC1/GND1 with IOH up to −4 mA at VCC = 5 V. |+| 3 | INB | input | Digital input of channel B on side 1. Channel B is the forward channel; the logic level driven here appears at OUTB on side 2. LVCMOS input thresholds referenced to VCC1 (VIH ≥ 0.7·VCC1, VIL ≤ 0.3·VCC1). Default output state (no F suffix) is high when input is lost. |+| 4 | GND1 | power_in | Ground reference for side 1 (VCC1 return). Isolated from GND2 across the SiO2 isolation barrier. |+| 5 | GND2 | power_in | Ground reference for side 2 (VCC2 return). Isolated from GND1 across the SiO2 isolation barrier. |+| 6 | OUTB | output | Digital output of channel B on side 2. Mirrors the logic level driven at INB on side 1. Push-pull CMOS output referenced to VCC2/GND2 with IOH up to −4 mA at VCC = 5 V. |+| 7 | INA | input | Digital input of channel A on side 2 (reverse channel). Logic level driven here appears at OUTA on side 1. LVCMOS thresholds referenced to VCC2 (VIH ≥ 0.7·VCC2, VIL ≤ 0.3·VCC2). |+| 8 | VCC2 | power_in | Power supply for side 2 (input for channel A, output for channel B). Operating range 2.25 V to 5.5 V referenced to GND2. Decouple with a low-ESR ceramic capacitor (e.g. 0.1 µF) close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Comm/UART |+| Pins | 8 |++## Ordering variants++- `ISO7721DWVR`+- `ISO7721DWVRDR`+- `ISO7721DWVRD`+- `ISO7721DWVRDWR`++## CAD (KiCad official)++- Symbol: `ISO7721DWVR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](docs/iso7721dwvr-datasheet.pdf) (38 pp, sha256 `6cd4876010fb4841`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/iso7721dwvr-datasheet.pdf)

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