# SN75ALS197DR

**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · SOIC-16

SN75ALS197DR from Texas Instruments, in a SOIC-16. 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 | 1B | input | Channel 1 differential receiver inverting input. |
| 2 | 1A | input | Channel 1 differential receiver non-inverting input; differential input voltage is specified as ±12 V (recommended) and common-mode input voltage as ±7 V. |
| 3 | 1Y | tri_state | Channel 1 single-ended 3-state output. |
| 4 | G | input | Active-high enable, common to the four channels. |
| 5 | 2Y | tri_state | Channel 2 single-ended 3-state output. |
| 6 | 2A | input | Channel 2 differential receiver non-inverting input. |
| 7 | 2B | input | Channel 2 differential receiver inverting input. |
| 8 | GND | power_in | Device ground. |
| 9 | 3B | input | Channel 3 differential receiver inverting input. |
| 10 | 3A | input | Channel 3 differential receiver non-inverting input. |
| 11 | 3Y | tri_state | Channel 3 single-ended 3-state output. |
| 12 | G | input | Active-low enable, common to the four channels. |
| 13 | 4Y | tri_state | Channel 4 single-ended 3-state output. |
| 14 | 4A | input | Channel 4 differential receiver non-inverting input. |
| 15 | 4B | input | Channel 4 differential receiver inverting input. |
| 16 | VCC | power_in | Device supply voltage, specified at 4.75 V to 5.25 V (5 V nominal). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SN75ALS197DR`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files: `sn75als197dr-etched.step` / `sn75als197dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn75als197dr.step` / `sn75als197dr.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/sn75als197.pdf) (25 pp, sha256 `0d5cc24847d0bc20`, retrieved 2026-10-11, 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/sn75als197dr-datasheet.pdf)