BL7141WH

@@ -0,0 +1,63 @@+# BL7141WH++**BL Shanghai Belling** · Digital Isolators · SOIC-16-300mil++BL7141WH from BL Shanghai Belling, 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 | VDD1 | power_in | Side-1 supply, 2.5 V to 5.5 V. Bypass to GND1 with 100 nF placed within 2 mm. |+| 2 | GND1 | power_in | Side-1 reference ground. Common to pin 8 internally. |+| 3 | VIA | input | Channel A digital input (side 1 → side 2 forward). Logic level referenced to VDD1: VIH = 0.7 x VDD1, VIL = 0.25 x VDD1. |+| 4 | VIB | input | Channel B digital input (side 1 → side 2 forward). Logic level referenced to VDD1. |+| 5 | VIC | input | Channel C digital input (side 1 → side 2 forward). Logic level referenced to VDD1. |+| 6 | VOD | output | Channel D digital output on side 1 (reverse channel, side 2 → side 1). Drive strength at 5 V: IOH = -4 mA, IOL = 4 mA. Default state is HIGH (WH variant) when input floats or VDDI is unpowered. |+| 7 | EN1 | input | Side-1 output enable. Active high or floating enables side-1 outputs (pin 6 VOD on BL7141); tie low to place side-1 outputs in high-impedance (Z) state. |+| 8 | GND1 | power_in | Side-1 reference ground (second GND1 pin, common with pin 2). |+| 9 | GND2 | power_in | Side-2 reference ground. Isolated from GND1 by the SiO2 barrier (5 kVrms working, 8 kVpk transient). |+| 10 | EN2 | input | Side-2 output enable. Active high or floating enables side-2 outputs (VOA, VOB, VOC); tie low to place side-2 outputs in high-impedance (Z) state. |+| 11 | VID | input | Channel D digital input on side 2 (reverse channel, side 2 → side 1). Logic level referenced to VDD2. |+| 12 | VOC | output | Channel C digital output on side 2 (forward channel). Drive strength at 5 V: IOH = -4 mA, IOL = 4 mA. Default HIGH (WH variant) when VIC is floating or VDDI is unpowered. |+| 13 | VOB | output | Channel B digital output on side 2 (forward). Default HIGH (WH variant) on floating input or unpowered VDDI. |+| 14 | VOA | output | Channel A digital output on side 2 (forward). Default HIGH (WH variant) on floating input or unpowered VDDI. |+| 15 | GND2 | power_in | Side-2 reference ground (second GND2 pin, common with pin 9). |+| 16 | VDD2 | power_in | Side-2 supply, 2.5 V to 5.5 V. Bypass to GND2 with 100 nF placed within 2 mm. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | SOIC-16-300mil |+| Category | Comm/UART |+| Pins | 16 |++## Ordering variants++Same part, different packaging or reel option.++- `BL7141WH`+- `BL7141WL`+- `BL7140WH`+- `BL7140WL`+- `BL7142WH`+- `BL7142WL`++## CAD (KiCad official)++- Symbol: `BL7141WH`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl7141wh-datasheet.pdf) (15 pp, sha256 `1bc81353fbdb9441`, 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/bl7141wh-datasheet.pdf)

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