# SN74AHC573DWR

**Texas Instruments** · Signal Switches, Multiplexers, Decoders · SOP-20-300mil

SN74AHC573DWR from Texas Instruments, in a SOP-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 | OE | input | Output Enable input control for tri-state outputs. |
| 2 | 1D | input | Data input for latch channel 1. |
| 3 | 2D | input | Data input for latch channel 2. |
| 4 | 3D | input | Data input for latch channel 3. |
| 5 | 4D | input | Data input for latch channel 4. |
| 6 | 5D | input | Data input for latch channel 5. |
| 7 | 6D | input | Data input for latch channel 6. |
| 8 | 7D | input | Data input for latch channel 7. |
| 9 | 8D | input | Data input for latch channel 8. |
| 10 | GND | power_in | Ground, 0V reference. |
| 11 | LE | input | Latch Enable input control. |
| 12 | 8Q | output | Tri-state data output for latch channel 8. |
| 13 | 7Q | output | Tri-state data output for latch channel 7. |
| 14 | 6Q | output | Tri-state data output for latch channel 6. |
| 15 | 5Q | output | Tri-state data output for latch channel 5. |
| 16 | 4Q | output | Tri-state data output for latch channel 4. |
| 17 | 3Q | output | Tri-state data output for latch channel 3. |
| 18 | 2Q | output | Tri-state data output for latch channel 2. |
| 19 | 1Q | output | Tri-state data output for latch channel 1. |
| 20 | VCC | power_in | Positive power supply pin, rated 2V to 5.5V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SN74AHC573DWR`
- Footprint: `Package_SO:SOP-20_7.5x12.8mm_P1.27mm`
- 3D model: SOP-20-300mil (KiCad packages3D, STEP)
- 3D model files: `sn74ahc573dwr-etched.step` / `sn74ahc573dwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74ahc573dwr.step` / `sn74ahc573dwr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](http://www.ti.com/cn/lit/gpn/sn74ahc573) (43 pp, sha256 `8417ec29eb1ca6ae`, retrieved 2026-10-01, 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-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/sn74ahc573dwr-datasheet.pdf)