# M74VHC1GT126DF1G

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

M74VHC1GT126DF1G 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 | 3-state control input: Low places the output Y in high impedance, High enables the output; input tolerates up to 7 V regardless of supply. |
| 2 | IN A | input | Buffer data input with TTL-compatible thresholds (VIL = 0.8 V, VIH = 2 V) that tolerates up to 7 V regardless of supply voltage. |
| 3 | GND | power_in | Ground reference (0 V) for the device. |
| 4 | OUT Y | tri_state | Noninverting 3-state output with full CMOS swing (VOH > 0.8 VCC, VOL < 0.1 VCC at load) that goes high impedance when OE is Low. |
| 5 | VCC | power_in | Positive supply, recommended 3.0 V to 5.5 V (absolute maximum -0.5 V to +7.0 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| 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 |
|---|---|---|---|---|---|---|---|
| DC Supply Voltage | VCC | -0.5 |  | 7 | V |  | 2 |
| DC Input Voltage | VIN | -0.5 |  | 7 | V |  | 2 |
| DC Output Voltage | VOUT | -0.5 |  |  | V | Max printed as VCC + 0.5 V | 2 |
| Input Diode Current | IIK | -20 |  |  | mA |  | 2 |
| Output Diode Current | IOK |  |  | 20 | mA | VOUT < GND; VOUT > VCC | 2 |
| DC Output Current, per Pin | IOUT |  |  | 25 | mA |  | 2 |
| DC Supply Current, VCC and GND | ICC |  |  | 50 | mA |  | 2 |
| Power Dissipation in Still Air | PD |  |  | 200 | mW | SC-88A, TSOP-5 | 2 |
| Thermal Resistance | JA |  |  | 333 | °C/W | SC-88A, TSOP-5 | 2 |
| Lead Temperature | TL |  |  | 260 | °C | 1 mm from case for 10 s | 2 |
| Junction Temperature Under Bias | TJ |  |  | 150 | °C |  | 2 |
| Storage Temperature | Tstg | -65 |  | 150 | °C |  | 2 |
| ESD Withstand Voltage | VESD | 2000 |  |  | V | Human Body Model (Note 1); printed as > 2000 | 2 |
| ESD Withstand Voltage | VESD | 200 |  |  | V | Machine Model (Note 2); printed as > 200 | 2 |
| Latchup Performance | ILatchup | -500 |  | 500 | mA | Above VCC and below GND at 125°C (Note 4) | 2 |
| DC Supply Voltage | VCC | 3 |  | 5.5 | V |  | 2 |
| DC Input Voltage | VIN | 0 |  | 5.5 | V |  | 2 |
| DC Output Voltage | VOUT | 0 |  |  | V | Max printed as VCC | 2 |
| Operating Temperature Range | TA | -55 |  | 125 | °C |  | 2 |
| Input Rise and Fall Time | tr, tf | 0 |  | 20 | ns/V | VCC = 5.0 V ± 0.5 V | 2 |
| Minimum High-Level Input Voltage | VIH | 1.4 |  |  | V | VCC = 3.0 V; −55 ≤ TA ≤ 125°C | 3 |
| Minimum High-Level Input Voltage | VIH | 2 |  |  | V | VCC = 4.5 V; −55 ≤ TA ≤ 125°C | 3 |
| Maximum Low-Level Input Voltage | VIL |  |  | 0.53 | V | VCC = 3.0 V; −55 ≤ TA ≤ 125°C | 3 |
| Maximum Low-Level Input Voltage | VIL |  |  | 0.8 | V | VCC = 4.5 V; −55 ≤ TA ≤ 125°C | 3 |
| Minimum High-Level Output Voltage | VOH | 2.9 |  |  | V | VCC = 3.0 V; VIN = VIH or VIL; IOH = −50 µA; −55 ≤ TA ≤ 125°C | 3 |
| Minimum High-Level Output Voltage | VOH | 4.4 |  |  | V | VCC = 4.5 V; VIN = VIH or VIL; IOH = −50 µA; −55 ≤ TA ≤ 125°C | 3 |
| Minimum High-Level Output Voltage | VOH | 2.34 |  |  | V | VCC = 3.0 V; VIN = VIH or VIL; IOH = −4 mA; −55 ≤ TA ≤ 125°C | 3 |
| Minimum High-Level Output Voltage | VOH | 3.66 |  |  | V | VCC = 4.5 V; VIN = VIH or VIL; IOH = −8 mA; −55 ≤ TA ≤ 125°C | 3 |
| Maximum Low-Level Output Voltage | VOL |  |  | 0.1 | V | VCC = 3.0 V; VIN = VIH or VIL; IOL = 50 µA; −55 ≤ TA ≤ 125°C | 3 |
| Maximum Low-Level Output Voltage | VOL |  |  | 0.52 | V | VCC = 3.0 V; VIN = VIH or VIL; IOL = 4 mA; −55 ≤ TA ≤ 125°C | 3 |
| Maximum Input Leakage Current | IIN | -1 |  | 1 | µA | VIN = 5.5 V or GND; VCC 0 to 5.5 V; −55 ≤ TA ≤ 125°C | 3 |
| Maximum Quiescent Supply Current | ICC |  |  | 40 | µA | VCC = 5.5 V; VIN = VCC or GND; −55 ≤ TA ≤ 125°C | 3 |
| Quiescent Supply Current | ICCT |  |  | 1.65 | mA | VCC = 5.5 V; Input VIN = 3.4 V; Other input VCC or GND; −55 ≤ TA ≤ 125°C | 3 |
| Output Leakage Current | IOPD |  |  | 10 | µA | VCC = 0.0 V; VOUT = 5.5 V; −55 ≤ TA ≤ 125°C | 3 |
| Maximum 3-State Leakage Current | IOZ | -2.5 |  | 2.5 | µA | VCC = 5.5 V; VIN = VIH or VIL; VOUT = VCC or GND; −55 ≤ TA ≤ 125°C | 3 |
| Maximum Input Capacitance | Cin |  | 4 | 10 | pF |  | 3 |
| Power Dissipation Capacitance | CPD |  | 14 |  | pF | Typical @ 25°C, VCC = 5.0 V | 3 |

## CAD (KiCad official)

- Symbol: `M74VHC1GT126DF1G`
- Footprint: `Package_TO_SOT_SMD:SOT-353_SC-70-5`
- 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files: `m74vhc1gt126df1g-etched.step` / `m74vhc1gt126df1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `m74vhc1gt126df1g.step` / `m74vhc1gt126df1g.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/8586203563080470528) (6 pp, sha256 `01a4b496df7e91ca`, retrieved 2026-10-20, 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/m74vhc1gt126df1g-datasheet.pdf)