# SN74LS19ANSR

**Texas Instruments** · Inverters · SOIC-14-208mil

SN74LS19ANSR from Texas Instruments, in a SOIC-14-208mil. 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 | Schmitt-trigger inverter 1 input; input voltage max 7 V. |
| 2 | 1Y | output | Inverter 1 totem-pole output; recommended IOH -400 µA max, IOL 8 mA max. |
| 3 | 2A | input | Schmitt-trigger inverter 2 input; input voltage max 7 V. |
| 4 | 2Y | output | Inverter 2 totem-pole output; recommended IOH -400 µA max, IOL 8 mA max. |
| 5 | 3A | input | Schmitt-trigger inverter 3 input; input voltage max 7 V. |
| 6 | 3Y | output | Inverter 3 totem-pole output; recommended IOH -400 µA max, IOL 8 mA max. |
| 7 | GND | power_in | Ground reference for the device. |
| 8 | 4Y | output | Inverter 4 totem-pole output; recommended IOH -400 µA max, IOL 8 mA max. |
| 9 | 4A | input | Schmitt-trigger inverter 4 input; input voltage max 7 V. |
| 10 | 5Y | output | Inverter 5 totem-pole output; recommended IOH -400 µA max, IOL 8 mA max. |
| 11 | 5A | input | Schmitt-trigger inverter 5 input; input voltage max 7 V. |
| 12 | 6Y | output | Inverter 6 totem-pole output; recommended IOH -400 µA max, IOL 8 mA max. |
| 13 | 6A | input | Schmitt-trigger inverter 6 input; input voltage max 7 V. |
| 14 | VCC | power_in | Supply voltage, recommended 4.75 V to 5.25 V (5 V nominal), absolute max 7 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14-208mil |
| Category | Logic |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `SN74LS19ANSR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14-208mil (KiCad packages3D, STEP)
- 3D model files: `sn74ls19ansr-etched.step` / `sn74ls19ansr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74ls19ansr.step` / `sn74ls19ansr.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/sn74ls19a) (15 pp, sha256 `fc1675149d70aa92`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/sn74ls19ansr-datasheet.pdf)