# SN74LVTH2245DWR

**Texas Instruments** · Latches · SOIC-20-300mil

SN74LVTH2245DWR from Texas Instruments, in a SOIC-20-300mil. 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 | DIR | input | Direction control: low selects B-to-A transfer and high selects A-to-B transfer, per the function table. |
| 2 | A1 | bidirectional | A-port data I/O; recommended IOH is -32 mA and IOL is 64 mA for the SN74LVTH2245 A port. |
| 3 | A2 | bidirectional | A-port data I/O; recommended IOH is -32 mA and IOL is 64 mA for the SN74LVTH2245 A port. |
| 4 | A3 | bidirectional | A-port data I/O; recommended IOH is -32 mA and IOL is 64 mA for the SN74LVTH2245 A port. |
| 5 | A4 | bidirectional | A-port data I/O; recommended IOH is -32 mA and IOL is 64 mA for the SN74LVTH2245 A port. |
| 6 | A5 | bidirectional | A-port data I/O; recommended IOH is -32 mA and IOL is 64 mA for the SN74LVTH2245 A port. |
| 7 | A6 | bidirectional | A-port data I/O; recommended IOH is -32 mA and IOL is 64 mA for the SN74LVTH2245 A port. |
| 8 | A7 | bidirectional | A-port data I/O; recommended IOH is -32 mA and IOL is 64 mA for the SN74LVTH2245 A port. |
| 9 | A8 | bidirectional | A-port data I/O; recommended IOH is -32 mA and IOL is 64 mA for the SN74LVTH2245 A port. |
| 10 | GND | power_in | Ground reference pin for the device. |
| 11 | B8 | bidirectional | B-port data I/O with equivalent 22-ohm series resistors; designed to source or sink up to 12 mA, with recommended IOH of -12 mA and IOL of 12 mA. |
| 12 | B7 | bidirectional | B-port data I/O with equivalent 22-ohm series resistors; designed to source or sink up to 12 mA, with recommended IOH of -12 mA and IOL of 12 mA. |
| 13 | B6 | bidirectional | B-port data I/O with equivalent 22-ohm series resistors; designed to source or sink up to 12 mA, with recommended IOH of -12 mA and IOL of 12 mA. |
| 14 | B5 | bidirectional | B-port data I/O with equivalent 22-ohm series resistors; designed to source or sink up to 12 mA, with recommended IOH of -12 mA and IOL of 12 mA. |
| 15 | B4 | bidirectional | B-port data I/O with equivalent 22-ohm series resistors; designed to source or sink up to 12 mA, with recommended IOH of -12 mA and IOL of 12 mA. |
| 16 | B3 | bidirectional | B-port data I/O with equivalent 22-ohm series resistors; designed to source or sink up to 12 mA, with recommended IOH of -12 mA and IOL of 12 mA. |
| 17 | B2 | bidirectional | B-port data I/O with equivalent 22-ohm series resistors; designed to source or sink up to 12 mA, with recommended IOH of -12 mA and IOL of 12 mA. |
| 18 | B1 | bidirectional | B-port data I/O with equivalent 22-ohm series resistors; designed to source or sink up to 12 mA, with recommended IOH of -12 mA and IOL of 12 mA. |
| 19 | OE | input | Output enable: low enables the transfer path, high isolates the buses; tie OE to VCC through a pullup resistor to keep outputs high-impedance above 1.5 V. |
| 20 | VCC | power_in | Supply voltage pin; recommended operating range is 2.7 V to 3.6 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-20-300mil |
| Category | Logic |
| Pins | 20 |

## CAD (KiCad official)

- Symbol: `SN74LVTH2245DWR`
- Footprint: `Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm`
- 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files: `sn74lvth2245dwr-etched.step` / `sn74lvth2245dwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvth2245dwr.step` / `sn74lvth2245dwr.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/sn74lvth2245) (22 pp, sha256 `bf9e6e31c8384577`, retrieved 2026-10-08, tier: lcsc)
- **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/sn74lvth2245dwr-datasheet.pdf)