# SN75LBC182DR

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

SN75LBC182DR from Texas Instruments, in a SOIC-8. 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 | Receiver output that goes high when VID ≥ 0.2 V, low when VID ≤ −0.2 V, and high when the inputs are open (fail-safe), and is high-impedance when RE is high. |
| 2 | RE | input | Active-low receiver enable input; driving it high places the receiver output R in the high-impedance (Z) state. |
| 3 | DE | input | Active-high driver enable input; driving it low places the driver outputs A and B in the high-impedance (Z) state. |
| 4 | D | input | Driver data input; with DE high, a high on D drives A high and B low, and a low on D drives A low and B high. |
| 5 | GND | power_in | Device ground, to which all input and output voltages are referenced. |
| 6 | A | bidirectional | Non-inverting differential bus I/O; the bus voltage must stay within −7 V to 12 V (common mode, recommended) and within −15 V to 15 V (absolute maximum). |
| 7 | B | bidirectional | Inverting differential bus I/O; the bus voltage must stay within −7 V to 12 V (common mode, recommended) and within −15 V to 15 V (absolute maximum). |
| 8 | VCC | power_in | Device supply voltage, which must be between 4.75 V and 5.25 V (5 V nominal). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SN75LBC182DR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `sn75lbc182dr-etched.step` / `sn75lbc182dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn75lbc182dr.step` / `sn75lbc182dr.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/sn75lbc182.pdf) (24 pp, sha256 `f83ef4d9e449a65f`, retrieved 2026-10-08, tier: manufacturer)
- **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/sn75lbc182dr-datasheet.pdf)