# ISO1042QDWRQ1

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

ISO1042QDWRQ1 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 supply voltage, Side 1. |
| 2 | GND1 | power_in | Digital-side ground connection, Side 1. |
| 3 | TXD | input | CAN transmit data input (LOW for dominant and HIGH for recessive bus states). |
| 4 | NC | unconnected | Not connected. |
| 5 | RXD | output | CAN receive data output (LOW for dominant and HIGH for recessive bus states). |
| 6 | NC | unconnected | Not connected. |
| 7 | NC | unconnected | Not connected. |
| 8 | GND1 | power_in | Digital-side ground connection, Side 1. |
| 9 | GND2 | power_in | Transceiver-side ground connection, Side 2. |
| 10 | GND2 | power_in | Transceiver-side ground connection, Side 2. |
| 11 | VCC2 | power_in | Transceiver-side supply voltage, Side 2; must be externally connected to pin 16. |
| 12 | CANL | bidirectional | Low-level CAN bus line. |
| 13 | CANH | bidirectional | High-level CAN bus line. |
| 14 | NC | unconnected | Not connected. |
| 15 | GND2 | power_in | Transceiver-side ground connection, Side 2. |
| 16 | VCC2 | power_in | Transceiver-side supply voltage, Side 2; 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: `ISO1042QDWRQ1`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files: `iso1042qdwrq1-etched.step` / `iso1042qdwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `iso1042qdwrq1.step` / `iso1042qdwrq1.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-q1) (44 pp, sha256 `dd93a4779f554833`, retrieved 2026-10-05, 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/iso1042qdwrq1-datasheet.pdf)