# AM26LV31EIDR

**Texas Instruments** · RS-485 / RS-422 ICs · SOIC-16

AM26LV31EIDR from Texas Instruments, in a SOIC-16. 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 | 1A | input | Logic data input to RS422 driver 1 |
| 2 | 1Y | tri_state | RS-422 data line for driver 1 |
| 3 | 1Z | tri_state | RS-422 data line for driver 1 |
| 4 | G | input | Driver enable input (active high), transmitter outputs enabled when high |
| 5 | 2Z | tri_state | RS-422 data line for driver 2 |
| 6 | 2Y | tri_state | RS-422 data line for driver 2 |
| 7 | 2A | input | Logic data input to RS422 driver 2 |
| 8 | GND | power_in | Device ground pin |
| 9 | 3A | input | Logic data input to RS422 driver 3 |
| 10 | 3Y | tri_state | RS-422 data line for driver 3 |
| 11 | 3Z | tri_state | RS-422 data line for driver 3 |
| 12 | G | input | Driver enable input (active low), transmitter outputs enabled when low |
| 13 | 4Z | tri_state | RS-422 data line for driver 4 |
| 14 | 4Y | tri_state | RS-422 data line for driver 4 |
| 15 | 4A | input | Logic data input to RS422 driver 4 |
| 16 | VCC | power_in | Power supply input, 3.0V to 3.6V (nominal 3.3V) |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `AM26LV31EIDR`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files: `am26lv31eidr-etched.step` / `am26lv31eidr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `am26lv31eidr.step` / `am26lv31eidr.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/lit/ds/symlink/am26lv31e.pdf) (31 pp, sha256 `d65bbb838129672a`, retrieved 2026-09-22, tier: manufacturer)
- **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/am26lv31eidr-datasheet.pdf)