# ISO3086TDWR

**Texas Instruments** · Isolated RS-485/422 Transceivers · SOIC-16-300mil

ISO3086TDWR 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 | D1 | output | Transformer driver terminal 1, open-drain output that drives the isolation transformer primary; the datasheet gives a maximum voltage of 14 V on D1 and D2 and a transformer driver output current of 450 mA. |
| 2 | D2 | output | Transformer driver terminal 2, open-drain output that drives the isolation transformer primary; the datasheet gives a maximum voltage of 14 V on D1 and D2 and a transformer driver output current of 450 mA. |
| 3 | GND1 | power_in | Logic-side ground reference for the isolated logic-side circuitry. |
| 4 | VCC1 | power_in | Logic-side power supply; recommended 3 V to 3.6 V for 3.3 V operation and 4.5 V to 5.5 V for 5 V operation. |
| 5 | R | output | Receiver output; the absolute maximum receiver output current is ±10 mA. |
| 6 | RE | input | Receiver enable input with complementary logic; VIH is at least 2 V and VIL is at most 0.8 V for RE inputs. |
| 7 | DE | input | Driver enable input; VIH is at least 0.7×VCC and VIL is at most 0.3×VCC for D and DE inputs. |
| 8 | D | input | Driver input; VIH is at least 0.7×VCC and VIL is at most 0.3×VCC for D and DE inputs. |
| 9 | GND2 | power_in | Bus-side ground reference; pins 9 and 15 are internally connected to each other. |
| 10 | NC | unconnected | No connect; this pin is not connected to any internal circuitry. |
| 11 | Y | output | Non-inverting driver output on the bus side; driver output current is limited to ±60 mA. |
| 12 | Z | output | Inverting driver output on the bus side; driver output current is limited to ±60 mA. |
| 13 | B | input | Inverting receiver input on the bus side; differential input voltage A with respect to B is rated -12 V to 12 V. |
| 14 | A | input | Non-inverting receiver input on the bus side; differential input voltage A with respect to B is rated -12 V to 12 V. |
| 15 | GND2 | power_in | Bus-side ground reference; internally connected to pin 9. |
| 16 | VCC2 | power_in | Bus-side power supply; recommended 4.5 V to 5.5 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `ISO3086TDWR`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files: `iso3086tdwr-etched.step` / `iso3086tdwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `iso3086tdwr.step` / `iso3086tdwr.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/iso3086t) (35 pp, sha256 `90c29f107a476e4d`, retrieved 2026-10-09, 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/iso3086tdwr-datasheet.pdf)