# ISO7740FDBQR

**Texas Instruments** · Digital Isolators · SSOP-16-150mil

ISO7740FDBQR from Texas Instruments, in a SSOP-16-150mil. 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 input for input side, rated 2.25 V to 5.5 V |
| 2 | GND1 | power_in | Ground return for input side |
| 3 | INA | input | Digital input for channel A, accepts CMOS logic levels |
| 4 | INB | input | Digital input for channel B, accepts CMOS logic levels |
| 5 | INC | input | Digital input for channel C, accepts CMOS logic levels |
| 6 | IND | input | Digital input for channel D, accepts CMOS logic levels |
| 7 | NC | unconnected | Not connected |
| 8 | GND1 | power_in | Ground return for input side |
| 9 | GND2 | power_in | Ground return for output side |
| 10 | EN2 | input | Output enable for side 2; high or open enables outputs, low forces high impedance |
| 11 | OUTD | output | Digital output for channel D, provides CMOS logic levels |
| 12 | OUTC | output | Digital output for channel C, provides CMOS logic levels |
| 13 | OUTB | output | Digital output for channel B, provides CMOS logic levels |
| 14 | OUTA | output | Digital output for channel A, provides CMOS logic levels |
| 15 | GND2 | power_in | Ground return for output side |
| 16 | VCC2 | power_in | Power supply input for output side, rated 2.25 V to 5.5 V |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-150mil |
| Category | Signal Isolation Devices |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `ISO7740FDBQR`
- Footprint: `Package_SO:SSOP-16_5.3x6.2mm_P0.65mm`
- 3D model: SSOP-16-150mil (KiCad packages3D, STEP)
- 3D model files: `iso7740fdbqr-etched.step` / `iso7740fdbqr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `iso7740fdbqr.step` / `iso7740fdbqr.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 2026-09-23, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-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).

[Datasheet PDF](docs/iso7740fdbqr-datasheet.pdf)