# 74HC14-TD

**TDSEMIC** · Inverters · SOP-14

74HC14-TD from TDSEMIC, in a SOP-14. 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 | Data input of Schmitt-trigger inverter 1 (drives output 1Y on pin 2). |
| 2 | 1Y | output | Data output of Schmitt-trigger inverter 1, the inverse of 1A. |
| 3 | 2A | input | Data input of Schmitt-trigger inverter 2 (drives output 2Y on pin 4). |
| 4 | 2Y | output | Data output of Schmitt-trigger inverter 2, the inverse of 2A. |
| 5 | 3A | input | Data input of Schmitt-trigger inverter 3 (drives output 3Y on pin 6). |
| 6 | 3Y | output | Data output of Schmitt-trigger inverter 3, the inverse of 3A. |
| 7 | GND | power_in | System ground (0 V reference). |
| 8 | 4Y | output | Data output of Schmitt-trigger inverter 4, the inverse of 4A. |
| 9 | 4A | input | Data input of Schmitt-trigger inverter 4 (drives output 4Y on pin 8). |
| 10 | 5Y | output | Data output of Schmitt-trigger inverter 5, the inverse of 5A. |
| 11 | 5A | input | Data input of Schmitt-trigger inverter 5 (drives output 5Y on pin 10). |
| 12 | 6Y | output | Data output of Schmitt-trigger inverter 6, the inverse of 6A. |
| 13 | 6A | input | Data input of Schmitt-trigger inverter 6 (drives output 6Y on pin 12). |
| 14 | VCC | power_in | Positive supply; recommended 2.0 V to 6.0 V (typ. 5.0 V), absolute maximum +7 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TDSEMIC |
| Package | SOP-14 |
| Category | Logic |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `74HC14-TD`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOP-14 (KiCad packages3D, STEP)
- 3D model files: `74hc14-td-etched.step` / `74hc14-td-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74hc14-td.step` / `74hc14-td.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TDSEMIC datasheet](docs/74hc14-td-datasheet.pdf) (9 pp, sha256 `728c6915fd1c08bb`, retrieved 2026-10-09, 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-sonnet-5-5` (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/74hc14-td-datasheet.pdf)