# 74AHCT1G126GW

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

74AHCT1G126GW from Nexperia, 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 LOW the output Y is forced to high-impedance (Z), and when HIGH the output follows input A (Table 4 function table). |
| 2 | A | input | Data input A, overvoltage tolerant to 5.5 V; recommended input voltage range is 0 V to 5.5 V (Table 6). |
| 3 | GND | power_in | Ground (0 V) reference for all voltages on the device. |
| 4 | Y | tri_state | Data output Y, a 3-state output with IO limited to ±25 mA (Table 5) and output voltage between 0 V and VCC. |
| 5 | VCC | power_in | Supply voltage: 4.5 V to 5.5 V recommended for 74AHCT1G126 (Table 6), with an absolute maximum of 7.0 V (Table 5). |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| supply voltage (recommended) | VCC | 4.5 | 5 | 5.5 | V |  | 4 |
| input voltage (recommended) | VI | 0 |  | 5.5 | V |  | 4 |
| output voltage (recommended) | VO | 0 |  |  | V |  | 4 |
| ambient temperature | Tamb | -40 | 25 | 125 | °C |  | 4 |
| input transition rise and fall rate | Δt/ΔV |  |  | 20 | ns/V | VCC = 5.0 V ± 0.5 V | 4 |
| supply voltage (absolute maximum) | VCC | -0.5 |  | 7 | V |  | 3 |
| input voltage (absolute maximum) | VI | -0.5 |  | 7 | V |  | 3 |
| input clamping current | IIK | -20 |  |  | mA | VI < -0.5 V | 3 |
| output clamping current | IOK | -20 |  | 20 | mA | VO < -0.5 V or VO > VCC + 0.5 V | 3 |
| output current | IO | -25 |  | 25 | mA | -0.5 V < VO < VCC + 0.5 V | 3 |
| supply current | ICC |  |  | 75 | mA |  | 3 |
| ground current | IGND | -75 |  |  | mA |  | 3 |
| storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| total power dissipation | Ptot |  |  | 250 | mW | Tamb = -40 °C to +125 °C | 3 |
| HIGH-level input voltage | VIH | 2 |  |  | V | VCC = 4.5 V to 5.5 V; 25 °C | 5 |
| LOW-level input voltage | VIL |  |  | 0.8 | V | VCC = 4.5 V to 5.5 V; 25 °C | 5 |
| HIGH-level output voltage | VOH | 4.4 | 4.5 |  | V | VI = VIH or VIL; VCC = 4.5 V; IO = -50 μA; 25 °C | 5 |
| HIGH-level output voltage | VOH | 4.4 |  |  | V | VI = VIH or VIL; VCC = 4.5 V; IO = -50 μA; -40 °C to +125 °C | 5 |
| HIGH-level output voltage | VOH | 3.94 |  |  | V | VI = VIH or VIL; VCC = 4.5 V; IO = -8.0 mA; 25 °C | 5 |
| HIGH-level output voltage | VOH | 3.8 |  |  | V | VI = VIH or VIL; VCC = 4.5 V; IO = -8.0 mA; -40 °C to +85 °C | 5 |
| HIGH-level output voltage | VOH | 3.7 |  |  | V | VI = VIH or VIL; VCC = 4.5 V; IO = -8.0 mA; -40 °C to +125 °C | 5 |
| LOW-level output voltage | VOL |  | 0 | 0.1 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 50 μA; 25 °C | 5 |
| LOW-level output voltage | VOL |  |  | 0.1 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 50 μA; -40 °C to +125 °C | 5 |
| LOW-level output voltage | VOL |  |  | 0.36 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 8.0 mA; 25 °C | 5 |
| LOW-level output voltage | VOL |  |  | 0.44 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 8.0 mA; -40 °C to +85 °C | 5 |
| LOW-level output voltage | VOL |  |  | 0.55 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 8.0 mA; -40 °C to +125 °C | 5 |
| OFF-state output current | IOZ | -0.25 |  | 0.25 | μA | VI = VIH or VIL; VO = VCC or GND; VCC = 5.5 V; 25 °C | 5 |
| OFF-state output current | IOZ | -2.5 |  | 2.5 | μA | VI = VIH or VIL; VO = VCC or GND; VCC = 5.5 V; -40 °C to +85 °C | 5 |
| OFF-state output current | IOZ | -10 |  | 10 | μA | VI = VIH or VIL; VO = VCC or GND; VCC = 5.5 V; -40 °C to +125 °C | 5 |
| input leakage current | II |  |  | 0.1 | μA | VI = 5.5 V or GND; VCC = 0 V to 5.5 V; 25 °C | 5 |
| input leakage current | II |  |  | 1 | μA | VI = 5.5 V or GND; VCC = 0 V to 5.5 V; -40 °C to +85 °C | 5 |
| input leakage current | II |  |  | 2 | μA | VI = 5.5 V or GND; VCC = 0 V to 5.5 V; -40 °C to +125 °C | 5 |
| supply current | ICC |  |  | 2 | μA | VI = VCC or GND; IO = 0 A; VCC = 5.5 V; 25 °C | 5 |
| supply current | ICC |  |  | 20 | μA | VI = VCC or GND; IO = 0 A; VCC = 5.5 V; -40 °C to +85 °C | 5 |
| supply current | ICC |  |  | 40 | μA | VI = VCC or GND; IO = 0 A; VCC = 5.5 V; -40 °C to +125 °C | 5 |
| additional supply current | ΔICC |  |  | 1.35 | mA | per input pin; VI = VCC - 2.1 V; other inputs at VCC or GND; IO = 0 A; VCC = 4.5 V to 5.5 V; 25 °C | 5 |
| additional supply current | ΔICC |  |  | 1.5 | mA | per input pin; VI = VCC - 2.1 V; other inputs at VCC or GND; IO = 0 A; VCC = 4.5 V to 5.5 V; -40 °C to +85 °C | 5 |
| input capacitance | CI |  | 3 | 10 | pF | 25 °C | 5 |
| input capacitance | CI |  |  | 10 | pF | -40 °C to +125 °C | 5 |
| propagation delay A to Y | tpd |  | 3.4 | 5.5 | ns | A to Y; VCC = 4.5 V to 5.5 V; CL = 15 pF; 25 °C | 7 |
| propagation delay A to Y | tpd | 1 |  | 6.5 | ns | A to Y; VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +85 °C | 7 |
| propagation delay A to Y | tpd | 1 |  | 7 | ns | A to Y; VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +125 °C | 7 |
| propagation delay A to Y | tpd |  | 4.7 | 7.5 | ns | A to Y; VCC = 4.5 V to 5.5 V; CL = 50 pF; 25 °C | 7 |
| propagation delay A to Y | tpd | 1 |  | 8.5 | ns | A to Y; VCC = 4.5 V to 5.5 V; CL = 50 pF; -40 °C to +85 °C | 7 |
| propagation delay A to Y | tpd | 1 |  | 9.5 | ns | A to Y; VCC = 4.5 V to 5.5 V; CL = 50 pF; -40 °C to +125 °C | 7 |
| enable time OE to Y | ten |  | 3.4 | 5.6 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 15 pF; 25 °C | 7 |
| enable time OE to Y | ten | 1 |  | 6.3 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +85 °C | 7 |
| enable time OE to Y | ten | 1 |  | 6.5 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +125 °C | 7 |
| enable time OE to Y | ten |  | 4.8 | 8 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 50 pF; 25 °C | 7 |
| enable time OE to Y | ten | 1 |  | 9 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 50 pF; -40 °C to +85 °C | 7 |
| disable time OE to Y | tdis |  | 4 | 6.8 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 15 pF; 25 °C | 7 |
| disable time OE to Y | tdis | 1 |  | 8 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +85 °C | 7 |
| disable time OE to Y | tdis | 1 |  | 8.5 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +125 °C | 7 |
| disable time OE to Y | tdis |  | 5.7 | 8.8 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 50 pF; 25 °C | 7 |
| disable time OE to Y | tdis | 1 |  | 10 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 50 pF; -40 °C to +85 °C | 7 |
| disable time OE to Y | tdis | 1 |  | 11.5 | ns | OE to Y; VCC = 4.5 V to 5.5 V; CL = 50 pF; -40 °C to +125 °C | 7 |

## CAD (KiCad official)

- Symbol: `74AHCT1G126GW`
- Footprint: `Package_TO_SOT_SMD:SOT-353_SC-70-5`
- 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files: `74ahct1g126gw-etched.step` / `74ahct1g126gw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74ahct1g126gw.step` / `74ahct1g126gw.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586203468348731392) (16 pp, sha256 `4c97f93b5d6a26e4`, retrieved 2026-10-17, 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/74ahct1g126gw-datasheet.pdf)