# AM26C31IDBR

**Texas Instruments** · RS-485 / RS-422 ICs · SSOP-16-208mil

AM26C31IDBR from Texas Instruments, in a SSOP-16-208mil. 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 | 1A | input | Driver 1 input. |
| 2 | 1Y | output | Driver 1 output (non-inverted side of the differential pair). |
| 3 | 1Z | output | Driver 1 inverted output (complementary side of the differential pair). |
| 4 | G | input | Active-high enable input for drivers 1 and 2 (the G pin at pin 4 is the active-high enable per Table 4-1). |
| 5 | 2Z | output | Driver 2 inverted output (complementary side of the differential pair). |
| 6 | 2Y | output | Driver 2 output (non-inverted side of the differential pair). |
| 7 | 2A | input | Driver 2 input. |
| 8 | GND | power_in | Ground pin (network ground reference for all voltages in the Absolute Maximum Ratings). |
| 9 | 3A | input | Driver 3 input. |
| 10 | 3Y | output | Driver 3 output (non-inverted side of the differential pair). |
| 11 | 3Z | output | Driver 3 inverted output (complementary side of the differential pair). |
| 12 | G | input | Active-low enable input for drivers 3 and 4 (the G pin at pin 12 is the active-low enable per Table 4-1). |
| 13 | 4Z | output | Driver 4 inverted output (complementary side of the differential pair). |
| 14 | 4Y | output | Driver 4 output (non-inverted side of the differential pair). |
| 15 | 4A | input | Driver 4 input. |
| 16 | VCC | power_in | Supply pin; recommended supply is 4.5 V to 5.5 V (5 V nominal), absolute maximum 7 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-208mil |
| Category | Interface |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `AM26C31IDBR`
- Footprint: `Package_SO:SSOP-16_5.3x6.2mm_P0.65mm`
- 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
- 3D model files: `am26c31idbr-etched.step` / `am26c31idbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `am26c31idbr.step` / `am26c31idbr.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/am26c31) (39 pp, sha256 `d44d22a33c5916bc`, retrieved 2026-10-11, 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/am26c31idbr-datasheet.pdf)