# SN74LV123ADBR

**Texas Instruments** · Monostable Multivibrators · SSOP-16-208mil

SN74LV123ADBR from Texas Instruments, in a SSOP-16-208mil. 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 | 1A | input | Channel 1 falling edge trigger input when 1B = L; Hold low for other input methods |
| 2 | 1B | input | Channel 1 rising edge trigger input when 1A = H; Hold high for other input methods |
| 3 | 1CLR | input | Channel 1 rising edge trigger when 1A = H and 1B = L; Hold high for other input methods; Can cut pulse length short by driving low during output |
| 4 | 1Q | output | Channel 1 inverted output |
| 5 | 2Q | output | Channel 2 output |
| 6 | 2Cext | passive | Channel 2 external capacitor negative connection |
| 7 | 2Rext/Cext | passive | Channel 2 external capacitor and resistor junction connection |
| 8 | GND | power_in | Ground |
| 9 | 2A | input | Channel 2 falling edge trigger input when 2B = L; Hold low for other input methods |
| 10 | 2B | input | Channel 2 rising edge trigger input when 2A = H; Hold high for other input methods |
| 11 | 2CLR | input | Channel 2 rising edge trigger when 2A = H and 2B = L; Hold high for other input methods; Can cut pulse length short by driving low during output |
| 12 | 2Q | output | Channel 2 inverted output |
| 13 | 1Q | output | Channel 1 output |
| 14 | 1Cext | passive | Channel 1 external capacitor negative connection |
| 15 | 1Rext/Cext | passive | Channel 1 external capacitor and resistor junction connection |
| 16 | VCC | power_in | Power supply |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-208mil |
| Category | Logic |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `SN74LV123ADBR`
- Footprint: `Package_SO:SSOP-16_5.3x6.2mm_P0.65mm`
- 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
- 3D model files: `sn74lv123adbr-etched.step` / `sn74lv123adbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lv123adbr.step` / `sn74lv123adbr.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/sn74lv123a) (37 pp, sha256 `177536726ba54dee`, retrieved 2026-10-05, 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/sn74lv123adbr-datasheet.pdf)