The **U7SH02L-AF5-R** is a high-performance, low-voltage CMOS logic gate. Specifically, it is a **2-input NOR Gate** manufactured by Unisonic Technologies (UTC). --- ### 1. General Specifications Below are the primary technical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Logic Type** | NOR Gate | | **Number of Inputs** | 2 | | **Technology** | Low-voltage CMOS (LVC) | | **Operating Voltage (VCC)** | 1.65V to 5.5V | | **Output Current** | ±8mA (at 3V) | | **Package Type** | SOT-25 / SOT-23-5 (AF5) | | **Propagation Delay** | ~3.6ns (at 5V) | --- ### 2. Pin Configuration (AF5 Package) The device is housed in a 5-pin SOT-25 package. The standard pinout is as follows: 1. **Pin 1 (A):** Data Input 1 2. **Pin 2 (B):** Data Input 2 3. **Pin 3 (GND):** Ground 4. **Pin 4 (Y):** Data Output 5. **Pin 5 (VCC):** Power Supply ### 3. Logic Function The NOR gate follows the boolean expression $Y = \overline{A + B}$. The output is only **HIGH** when both inputs are **LOW**. | Input A | Input B | Output Y | | :---: | :---: | :---: | | L | L | **H** | | L | H | **L** | | H | L | **L** | | H | H | **L** | --- ### 4. Key Features & Applications * **High Speed:** Operates with minimal propagation delay, making it suitable for high-speed signal processing. * **Low Power Consumption:** Ideal for battery-operated handheld devices. * **Overvoltage Tolerance:** The inputs are typically tolerant to voltages higher than VCC, allowing for level-shifting applications. * **Common Uses:** * Signal gating and logic level shifting. * Mobile phones and tablets. * Industrial control systems. * Consumer electronics. --- ### 5. Part Number Breakdown The suffixing follows UTC's standard nomenclature: * **U7SH:** Logic Family (High Speed CMOS). * **02:** Specific Logic Function (2-input NOR). * **L:** Lead-free/Halogen-free. * **AF5:** Package code (SOT-25). * **R:** Tape and Reel packaging.