# M74VHC1GT126DF2G

**onsemi** · Buffers, Drivers, Receivers, Transceivers · SOT-353

M74VHC1GT126DF2G from onsemi, in a SOT-353. 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: when OE is high the output Y is placed in the high-impedance (Z) state, and when OE is low Y follows A per the function table. |
| 2 | A | input | Data input of the noninverting buffer, with input structures that tolerate up to 5.5 V regardless of VCC; this MC74VHC1GT126 variant has TTL-level thresholds (VIH minimum 2.0 V and VIL maximum 0.8 V at VCC of 4.5 V to 5.5 V). |
| 3 | GND | power_in | Ground reference pin for the device. |
| 4 | Y | tri_state | Buffered 3-state output rated for 8 mA source/sink at 3.0 V and an absolute maximum output current of ±25 mA. |
| 5 | VCC | power_in | Positive supply pin; recommended operating range is 2.0 V to 5.5 V, with an absolute maximum DC supply voltage of 6.5 V for this package. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-353 |
| Category | Logic |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `M74VHC1GT126DF2G`
- Footprint: `Package_TO_SOT_SMD:SOT-353_SC-70-5`
- 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files: `m74vhc1gt126df2g-etched.step` / `m74vhc1gt126df2g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `m74vhc1gt126df2g.step` / `m74vhc1gt126df2g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590222162830528512) (16 pp, sha256 `6acd080235b60c60`, retrieved 2026-10-09, 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/m74vhc1gt126df2g-datasheet.pdf)