# ISO1042BDWR

**Texas Instruments** · CAN Transceivers · SOIC-16-300mil

ISO1042BDWR 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 | Digital side power supply voltage, 1 side; supports 1.71V to 5.5V |
| 2 | GND1 | power_in | Digital side ground reference, 1 side |
| 3 | TXD | input | CAN transmit data input; low in dominant bus state, high in recessive bus state |
| 4 | NC | unconnected | Not connected |
| 5 | RXD | output | CAN receive data output; low in dominant bus state, high in recessive bus state |
| 6 | NC | unconnected | Not connected |
| 7 | NC | unconnected | Not connected |
| 8 | GND1 | power_in | Digital side ground reference, 1 side |
| 9 | GND2 | power_in | Transceiver side ground reference, 2 side |
| 10 | GND2 | power_in | Transceiver side ground reference, 2 side |
| 11 | VCC2 | power_in | Transceiver side power supply voltage, 2 side (4.5V to 5.5V); must be externally connected to pin 16 |
| 12 | CANL | bidirectional | Low CAN bus line with absolute maximum voltage rating ±70V and common mode input range ±30V |
| 13 | CANH | bidirectional | High CAN bus line with absolute maximum voltage rating ±70V and common mode input range ±30V |
| 14 | NC | unconnected | Not connected |
| 15 | GND2 | power_in | Transceiver side ground reference, 2 side |
| 16 | VCC2 | power_in | Transceiver side power supply voltage, 2 side (4.5V to 5.5V); must be externally connected to pin 11 |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Interface |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `ISO1042BDWR`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files: `iso1042bdwr-etched.step` / `iso1042bdwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `iso1042bdwr.step` / `iso1042bdwr.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/iso1042) (47 pp, sha256 `6240b4ede1d98f88`, retrieved 2026-10-01, 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-4-5-20251001` (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/iso1042bdwr-datasheet.pdf)