The **U74LVC1G32L-AF5-R** is a high-performance, low-voltage CMOS 2-input OR gate. It is manufactured by Unisonic Technologies (UTC) and belongs to the 74LVC family, which is designed for low-power, high-speed applications. --- ### ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Logic Function** | 2-Input OR Gate | | **Supply Voltage (Vcc)** | 1.65V to 5.5V | | **Output Drive Current** | ±24mA (at 3.0V) | | **Propagation Delay** | ~3.4ns (at 3.3V) | | **Package Type** | SOT-25 / SOT-23-5 | | **Operating Temperature** | -40°C to +85°C | | **Input Type** | Overvoltage tolerant up to 5.5V | --- ### ### Key Features * **Low Power Consumption:** Ideal for battery-operated devices with very low static power dissipation. * **5V Tolerance:** The inputs are tolerant to voltages up to 5.5V even when the Vcc is lower (e.g., 3.3V), allowing it to act as a **level shifter**. * **Ioff Protection:** Supports partial-power-down mode operation. This prevents damaging backflow current when the device is powered down. * **High Speed:** Operates at speeds comparable to standard TTL logic while maintaining CMOS power efficiency. --- ### ### Pin Configuration (SOT-25) The device typically follows this 5-pin layout: | Pin Number | Symbol | Description | | :--- | :--- | :--- | | 1 | A | Data Input | | 2 | B | Data Input | | 3 | GND | Ground (0V) | | 4 | Y | Data Output ($Y = A + B$) | | 5 | Vcc | Supply Voltage | --- ### ### Truth Table The OR gate logic dictates that the output is **High (H)** if at least one input is High. | Input A | Input B | Output Y | | :---: | :---: | :---: | | L | L | **L** | | L | H | **H** | | H | L | **H** | | H | H | **H** | --- ### ### Typical Applications 1. **Logic Level Shifting:** Translating 5V signals down to 3.3V or 1.8V systems. 2. **Signal Combining:** Using multiple sensor outputs to trigger a single interrupt pin. 3. **Portable Electronics:** Used in smartphones and tablets due to the tiny SOT-25 footprint.