# U74AHC1G08G-AL5-R

**UTC Unisonic Tech** · Logic Gates · SOT-353

U74AHC1G08G-AL5-R from UTC Unisonic Tech, 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 | A | input | Logic input A of the 2-input AND gate; input voltage must stay within 0 to 5.5 V (recommended operating range). |
| 2 | B | input | Logic input B of the 2-input AND gate; input voltage must stay within 0 to 5.5 V (recommended operating range). |
| 3 | GND | power_in | Ground reference for the device. |
| 4 | Y | output | AND gate output, high only when both A and B are high; output voltage is limited to 0 to VCC and output current is rated at ±25 mA absolute maximum. |
| 5 | VCC | power_in | Supply voltage, 2 V to 5.5 V recommended operating range (absolute maximum -0.5 to 7 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| 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 | VCC | -0.5 |  | 7 | V |  | 3 |
| Input Voltage | VIN | -0.5 |  | 7 | V |  | 3 |
| Output Voltage | VOUT | -0.5 |  |  | V |  | 3 |
| Input Clamp Current | IIK | -20 |  |  | mA |  | 3 |
| Output Clamp Current | IOK | -20 |  | 20 | mA |  | 3 |
| Output Current | IOUT | -25 |  | 25 | mA |  | 3 |
| VCC or GND Current | ICC | -50 |  | 50 | mA |  | 3 |
| Power Dissipation | PD |  |  | 250 | mW |  | 3 |
| Storage Temperature | TSTG | -65 |  | 150 | °C |  | 3 |
| Supply Voltage | VCC | 2 |  | 5.5 | V |  | 3 |
| Input Voltage | VIN | 0 |  | 5.5 | V |  | 3 |
| Output Voltage | VOUT | 0 |  |  | V |  | 3 |
| Input Transition Rise or Fall Time | tR, tF |  |  | 100 | ns/V | VCC=3.3V±0.3V | 3 |
| Input Transition Rise or Fall Time | tR, tF |  |  | 20 | ns/V | VCC=5.0V±0.5V | 3 |
| Operating Temperature | TOPR | -40 |  | 125 | °C |  | 3 |
| High-Level Input Voltage | VIH | 1.5 |  |  | V | VCC=2.0V | 3 |
| High-Level Input Voltage | VIH | 2.1 |  |  | V | VCC=3.0V | 3 |
| High-Level Input Voltage | VIH | 3.85 |  |  | V | VCC=5.5V | 3 |
| Low-Level Input Voltage | VIL |  |  | 0.5 | V | VCC=2.0V | 3 |
| Low-Level Input Voltage | VIL |  |  | 0.9 | V | VCC=3.0V | 3 |
| Low-Level Input Voltage | VIL |  |  | 1.65 | V | VCC=5.5V | 3 |
| High-Level Output Voltage | VOH | 1.9 | 2 |  | V | VCC=2.0V, IOH=-50μA | 3 |
| High-Level Output Voltage | VOH | 2.9 | 3 |  | V | VCC=3.0V, IOH=-50μA | 3 |
| High-Level Output Voltage | VOH | 4.4 | 4.5 |  | V | VCC=4.5V, IOH=-50μA | 3 |
| High-Level Output Voltage | VOH | 2.58 |  |  | V | VCC=3.0V, IOH=-4mA | 3 |
| High-Level Output Voltage | VOH | 3.94 |  |  | V | VCC=4.5V, IOH=-8mA | 3 |
| Low-Level Output Voltage | VOL |  |  | 0.1 | V | VCC=2.0V, IOL=50μA | 3 |
| Low-Level Output Voltage | VOL |  |  | 0.36 | V | VCC=3.0V, IOL=4mA | 3 |
| Input Leakage Current | II(LEAK) | -0.1 |  | 0.1 | μA | VCC=0~5.5V, VIN=VCC or GND | 3 |
| Quiescent Supply Current | IQ |  |  | 1 | μA | VCC=5.5V, VIN=VCC or GND, IOUT=0 | 3 |
| Input Capacitance | CIN |  | 4 | 10 | pF | VCC=5V, VIN=VCC or GND | 3 |
| Propagation Delay Time Input (A or B) to Output (Y), tPLH | tPLH |  | 6.2 | 8.8 | ns | VCC=3.3V±0.3V, CL=15pF | 4 |
| Propagation Delay Time Input (A or B) to Output (Y), tPHL | tPHL |  | 6.2 | 8.8 | ns | VCC=3.3V±0.3V, CL=15pF | 4 |
| Propagation Delay Time Input (A or B) to Output (Y), tPLH | tPLH |  | 8.7 | 12.3 | ns | VCC=3.3V±0.3V, CL=50pF | 4 |
| Propagation Delay Time Input (A or B) to Output (Y), tPHL | tPHL |  | 8.7 | 12.3 | ns | VCC=3.3V±0.3V, CL=50pF | 4 |
| Propagation Delay Time Input (A or B) to Output (Y), tPLH | tPLH |  | 4.3 | 5.9 | ns | VCC=5V±0.5V, CL=15pF | 4 |
| Propagation Delay Time Input (A or B) to Output (Y), tPHL | tPHL |  | 4.3 | 5.9 | ns | VCC=5V±0.5V, CL=15pF | 4 |
| Propagation Delay Time Input (A or B) to Output (Y), tPLH | tPLH |  | 5.8 | 7.9 | ns | VCC=5V±0.5V, CL=50pF | 4 |
| Propagation Delay Time Input (A or B) to Output (Y), tPHL | tPHL |  | 5.8 | 7.9 | ns | VCC=5V±0.5V, CL=50pF | 4 |
| Power Dissipation Capacitance | CPD |  | 18 |  | pF | No load, VCC=5V, f=1MHz | 4 |

## CAD (KiCad official)

- Symbol: `U74AHC1G08G-AL5-R`
- Footprint: `Package_TO_SOT_SMD:SOT-353_SC-70-5`
- 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files: `u74ahc1g08g-al5-r-etched.step` / `u74ahc1g08g-al5-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `u74ahc1g08g-al5-r.step` / `u74ahc1g08g-al5-r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UTC Unisonic Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589839344006963200) (5 pp, sha256 `cbc3003470a432ae`, retrieved 2026-10-19, 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/u74ahc1g08g-al5-r-datasheet.pdf)