# SN74LVC1G123DCUT

**Texas Instruments** · Monostable Multivibrators · VSSOP-8-0.5mm

SN74LVC1G123DCUT from Texas Instruments, in a VSSOP-8-0.5mm. 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 | A | input | Falling-edge sensitive input; requires B and CLR to remain high for proper operation. |
| 2 | B | input | Rising-edge sensitive input; requires A to remain low and CLR to remain high for proper operation. |
| 3 | CLR | input | Active-low clear input; can also function as rising-edge sensitive input when A remains low and B remains high. |
| 4 | GND | power_in | Ground connection. |
| 5 | Q | output | Output providing the monostable pulse. |
| 6 | Cext | passive | External timing capacitor connection point. |
| 7 | Rext/Cext | passive | External timing network connection; connects to external capacitor and resistor. |
| 8 | VCC | power_in | Power supply; supports 1.65V to 5.5V supply voltage. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.5mm |
| Category | Logic |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `SN74LVC1G123DCUT`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8-0.5mm (KiCad packages3D, STEP)
- 3D model files: `sn74lvc1g123dcut-etched.step` / `sn74lvc1g123dcut-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvc1g123dcut.step` / `sn74lvc1g123dcut.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/sn74lvc1g123) (33 pp, sha256 `6a0cde0b37ee8ff1`, retrieved 2026-10-03, 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/sn74lvc1g123dcut-datasheet.pdf)