# SN75176BPSR

**Texas Instruments** · RS-485 / RS-422 ICs · SOIC-8-208mil

SN75176BPSR from Texas Instruments, in a SOIC-8-208mil. 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 | R | output | RS-485 receiver's logic data output |
| 2 | RE | input | Receiver enable input (low active) |
| 3 | DE | input | Driver enable input (high active) |
| 4 | D | input | RS-485 driver's logic data input |
| 5 | GND | power_in | Device ground pin |
| 6 | A | bidirectional | RS-422 or RS-485 differential data line (non-inverting) |
| 7 | B | bidirectional | RS-422 or RS-485 differential data line (inverting) |
| 8 | VCC | power_in | Power input, connect to 5V supply |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8-208mil |
| Category | Interface |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `SN75176BPSR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8-208mil (KiCad packages3D, STEP)
- 3D model files: `sn75176bpsr-etched.step` / `sn75176bpsr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn75176bpsr.step` / `sn75176bpsr.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/sn75176b) (30 pp, sha256 `1ad4a93a260fe7ae`, retrieved 2026-10-07, 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/sn75176bpsr-datasheet.pdf)