### Technical Overview: U74LVC2G07G-AL6-R The **U74LVC2G07G-AL6-R** is a high-performance CMOS device featuring two independent **non-inverting buffers with open-drain outputs**. It is widely used in mixed-voltage systems and logic signal buffering. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Logic Function** | Dual Non-Inverting Buffer (Open-Drain) | | **Supply Voltage (Vcc)** | 1.65V to 5.5V | | **Input Type** | Over-voltage tolerant (up to 5.5V) | | **Output Type** | Open-Drain (Requires pull-up resistor) | | **Drive Capability** | 32mA (at 4.5V) | | **Package Type** | SOT-363 (AL6) | | **Operating Temp** | -40°C to +85°C | --- ### 2. Functional Characteristics #### Open-Drain Output Unlike standard push-pull outputs, the U74LVC2G07 does not have a P-channel transistor connected to Vcc. This means: * **Active Low:** It can pull the output to Ground (Logic 0). * **High Impedance (Hi-Z):** When the input is High, the output is in a high-impedance state. * **Level Shifting:** By connecting a pull-up resistor to a different voltage rail (e.g., 1.8V to 5V), the chip acts as a voltage translator. #### 5V Tolerance The inputs are designed to handle up to 5.5V regardless of the supply voltage (Vcc). This allows a 5V microcontroller to communicate with a 3.3V system safely. --- ### 3. Pin Configuration (SOT-363) | Pin Number | Symbol | Function | | :--- | :--- | :--- | | 1 | 1A | Data Input 1 | | 2 | GND | Ground (0V) | | 3 | 2A | Data Input 2 | | 4 | 2Y | Open-Drain Output 2 | | 5 | Vcc | Power Supply | | 6 | 1Y | Open-Drain Output 1 | --- ### 4. Part Number Breakdown The suffixing follows UTC (Unisonic Technologies) naming conventions: * **U74LVC**: Low-Voltage CMOS Logic Family. * **2G07**: Dual Buffer (2 gates), Open-Drain (07). * **G**: Halogen-free and Lead-free (Green). * **AL6**: Package code for **SOT-363**. * **R**: Tape & Reel packaging. --- ### 5. Common Applications * **I2C Bus Buffering:** Since I2C is an open-drain protocol, this chip is ideal for extending signal reach. * **Voltage Level Translation:** Converting logic levels between 1.8V, 2.5V, 3.3V, and 5V. * **Wired-AND Logic:** Multiple outputs can be connected to a single pull-up resistor to create a logic "AND" gate.