# ISO7741FBDWR

**Texas Instruments** · Digital Isolators · SOIC-16-300mil

ISO7741FBDWR from Texas Instruments, in a SOIC-16-300mil. 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 | Side 1 supply pin; VCC1 operates from 2.25 V to 5.5 V and should be decoupled to GND1 with 0.1 µF placed close to the pin. |
| 2 | GND1 | power_in | Side 1 ground connection for VCC1 (one of two GND1 pins, both connected together). |
| 3 | INA | input | Channel A data input on side 1; VIH is 0.7 x VCCI minimum and VIL is 0.3 x VCCI maximum. |
| 4 | INB | input | Channel B data input on side 1; VIH is 0.7 x VCCI minimum and VIL is 0.3 x VCCI maximum. |
| 5 | INC | input | Channel C data input on side 1; VIH is 0.7 x VCCI minimum and VIL is 0.3 x VCCI maximum. |
| 6 | OUTD | output | Channel D output on side 1 (the reverse-direction channel of ISO7741, whose input IND is on pin 11); output drives to VCCO with VOH of at least VCCO - 0.4 V and VOL of at most 0.4 V at 5 V. |
| 7 | EN1 | input | Output enable for side 1: when EN1 is high or open the side 1 outputs are enabled, and when EN1 is low they are forced to high impedance. |
| 8 | GND1 | power_in | Side 1 ground connection for VCC1 (one of two GND1 pins, both connected together). |
| 9 | GND2 | power_in | Side 2 ground connection for VCC2 (one of two GND2 pins, both connected together). |
| 10 | EN2 | input | Output enable for side 2: when EN2 is high or open the side 2 outputs are enabled, and when EN2 is low they are forced to high impedance. |
| 11 | IND | input | Channel D data input on side 2 (the reverse-direction channel of ISO7741); VIH is 0.7 x VCCI minimum and VIL is 0.3 x VCCI maximum. |
| 12 | OUTC | output | Channel C output on side 2; VOH is at least VCCO - 0.4 V and VOL is at most 0.4 V at 5 V. |
| 13 | OUTB | output | Channel B output on side 2; VOH is at least VCCO - 0.4 V and VOL is at most 0.4 V at 5 V. |
| 14 | OUTA | output | Channel A output on side 2; VOH is at least VCCO - 0.4 V and VOL is at most 0.4 V at 5 V. |
| 15 | GND2 | power_in | Side 2 ground connection for VCC2 (one of two GND2 pins, both connected together). |
| 16 | VCC2 | power_in | Side 2 supply pin; VCC2 operates from 2.25 V to 5.5 V and should be decoupled to GND2 with 0.1 µF placed close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `ISO7741FBDWR`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files: `iso7741fbdwr-etched.step` / `iso7741fbdwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `iso7741fbdwr.step` / `iso7741fbdwr.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/iso7740) (51 pp, sha256 `d6ac6b90609c88c4`, 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/iso7741fbdwr-datasheet.pdf)