The **U74LVC1G07L-AF5-R** is a high-performance, low-voltage CMOS device. Specifically, it is a **Single Buffer Gate with an Open-Drain Output**. Below is a detailed breakdown of its specifications, pinout, and functional characteristics. --- ### 1. General Specifications This IC is designed for low-voltage applications ranging from 1.65V to 5.5V, making it compatible with most modern digital logic levels. | Feature | Specification | | :--- | :--- | | **Logic Type** | Buffer / Line Driver | | **Output Type** | Open-Drain | | **Supply Voltage (Vcc)** | 1.65V to 5.5V | | **Number of Channels** | 1 | | **Current Output (High/Low)** | - / 32mA | | **Package Type** | SOT-25 / SOT-23-5 | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Pin Configuration The "AF5" in the part number typically refers to the SOT-23-5 package. The pinout is standard for single-gate logic: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | NC | No Connection | | 2 | A | Data Input | | 3 | GND | Ground (0V) | | 4 | Y | Data Output (Open-Drain) | | 5 | Vcc | Supply Voltage | --- ### 3. Functional Characteristics The most critical aspect of this part is the **Open-Drain Output**. * **Non-Inverting:** The logic state of the input $A$ is reflected at the output $Y$. * **Open-Drain:** The device can only pull the output signal to **Low (GND)**. It cannot pull the signal to **High**. * **Pull-up Resistor:** To achieve a "High" logic state, an external pull-up resistor must be connected between the output pin and the desired voltage rail. * **Voltage Level Shifting:** Because the output is open-drain, it can be pulled up to a voltage different from $V_{CC}$ (e.g., $V_{CC}$ is 3.3V, but the output is pulled up to 5V), allowing for easy level translation. --- ### 4. Typical Applications * **Wired-AND Logic:** Connecting multiple open-drain outputs together. * **LED Driving:** Sinking current to turn on an LED. * **Level Translation:** Converting 1.8V logic signals to 3.3V or 5V logic. * **Bus Buffering:** Providing high current drive for long signal lines. --- ### 5. Part Number Breakdown * **U74LVC:** Low-voltage CMOS family. * **1G:** Single gate device. * **07:** Function code (Buffer with Open-Drain). * **L:** Lead-free/Halogen-free. * **AF5:** Package code (SOT-23-5). * **R:** Tape and Reel packaging.