# SN65LBC179P

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

SN65LBC179P from Texas Instruments, in a PDIP-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 | VCC | power_in | 5 V supply pin, with a recommended supply range of 4.75 V to 5.25 V and an absolute maximum of 7 V. |
| 2 | R | output | RS-485 receiver logic output, rated for a high-level output current of -8 mA and a low-level output current of 8 mA, with an absolute maximum current of ±10 mA. |
| 3 | D | input | RS-485 driver logic input, requiring a high level of at least 2 V and a low level of at most 0.8 V. |
| 4 | GND | power_in | Ground reference for the device; all voltages are referenced to this pin. |
| 5 | Y | output | Non-inverting RS-485 bus driver output, with output current limited to ±250 mA short-circuit and bus voltage range of -7 V to 12 V. |
| 6 | Z | output | Inverted RS-485 bus driver output, with output current limited to ±250 mA short-circuit and bus voltage range of -7 V to 12 V. |
| 7 | B | input | Inverted RS-485 bus receiver input, with bus voltage range of -7 V to 12 V. |
| 8 | A | input | Non-inverting RS-485 bus receiver input, with bus voltage range of -7 V to 12 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SN65LBC179P`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files: `sn65lbc179p-etched.step` / `sn65lbc179p-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn65lbc179p.step` / `sn65lbc179p.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/sn65lbc179) (25 pp, sha256 `7d3bfd61bb5629cb`, retrieved 2026-10-08, 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/sn65lbc179p-datasheet.pdf)