# SN74LVC2244ADBR

**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · SSOP-20-208mil

SN74LVC2244ADBR from Texas Instruments, in a SSOP-20-208mil. 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 | 1OE | input | Output Enable 1 input to control tri-state outputs 1Y1-1Y4. |
| 2 | 1A1 | input | First octal buffer input, channel 1. |
| 3 | 2Y4 | tri_state | Second octal buffer tri-state output, channel 4. |
| 4 | 1A2 | input | First octal buffer input, channel 2. |
| 5 | 2Y3 | tri_state | Second octal buffer tri-state output, channel 3. |
| 6 | 1A3 | input | First octal buffer input, channel 3. |
| 7 | 2Y2 | tri_state | Second octal buffer tri-state output, channel 2. |
| 8 | 1A4 | input | First octal buffer input, channel 4. |
| 9 | 2Y1 | tri_state | Second octal buffer tri-state output, channel 1. |
| 10 | GND | power_in | Ground pin; 0 V reference. |
| 11 | 2A1 | input | Second octal buffer input, channel 1. |
| 12 | 1Y4 | tri_state | First octal buffer tri-state output, channel 4. |
| 13 | 2A2 | input | Second octal buffer input, channel 2. |
| 14 | 1Y3 | tri_state | First octal buffer tri-state output, channel 3. |
| 15 | 2A3 | input | Second octal buffer input, channel 3. |
| 16 | 1Y2 | tri_state | First octal buffer tri-state output, channel 2. |
| 17 | 2A4 | input | Second octal buffer input, channel 4. |
| 18 | 1Y1 | tri_state | First octal buffer tri-state output, channel 1. |
| 19 | 2OE | input | Output Enable 2 input to control tri-state outputs 2Y1-2Y4. |
| 20 | VCC | power_in | Power supply pin; operating voltage range 1.65 V to 3.6 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-20-208mil |
| Category | Logic |
| Pins | 20 |

## CAD (KiCad official)

- Symbol: `SN74LVC2244ADBR`
- Footprint: `Package_SO:SSOP-20_5.3x7.2mm_P0.65mm`
- 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files: `sn74lvc2244adbr-etched.step` / `sn74lvc2244adbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvc2244adbr.step` / `sn74lvc2244adbr.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/sn74lvc2244a) (30 pp, sha256 `5ef8b4b7332c1b8f`, retrieved 2026-10-06, tier: lcsc)
- **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/sn74lvc2244adbr-datasheet.pdf)