The **U74ACT86G-P14-R** is a high-speed CMOS logic integrated circuit. Specifically, it is a **Quadruple 2-Input Exclusive-OR (XOR) Gate**. It belongs to the "ACT" family, which means it uses CMOS technology but has TTL-compatible inputs. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Logic Function** | XOR (Exclusive OR) | | **Number of Gates** | 4 | | **Logic Family** | ACT (Advanced CMOS with TTL Inputs) | | **Supply Voltage (Vcc)** | 4.5V to 5.5V | | **Input Logic Threshold** | TTL Compatible (Low: 0.8V / High: 2.0V) | | **Output Current** | ±24 mA | | **Package Type** | TSSOP-14 (Thin Shrink Small Outline Package) | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Logic Operation The XOR gate follows the logic rule where the output is **HIGH (1)** only if the inputs are different. If both inputs are the same (both 0 or both 1), the output is **LOW (0)**. **Truth Table (per gate):** | Input A | Input B | Output Y | | :---: | :---: | :---: | | L | L | **L** | | L | H | **H** | | H | L | **H** | | H | H | **L** | --- ### 3. Pin Configuration (P14 Package) The "P14" suffix refers to the 14-pin arrangement (typically TSSOP-14). 1. **1A, 1B, 1Y:** Gate 1 (Inputs and Output) 2. **2A, 2B, 2Y:** Gate 2 (Inputs and Output) 3. **GND:** Ground (Pin 7) 4. **3A, 3B, 3Y:** Gate 3 (Inputs and Output) 5. **4A, 4B, 4Y:** Gate 4 (Inputs and Output) 6. **Vcc:** Power Supply (Pin 14) --- ### 4. Part Number Breakdown * **U74:** UTC (Unisonic Technologies Co.) manufacturer prefix for logic series. * **ACT:** Advanced CMOS with TTL-compatible inputs (fast speed, low power). * **86:** The standard logic function code for Quad 2-Input XOR. * **G:** Halogen-free and RoHS compliant. * **P14:** TSSOP-14 package. * **R:** Tape and Reel packaging. --- ### 5. Common Applications * **Parity Generators/Checkers:** Used to detect errors in digital data transmission. * **Binary Adders:** XOR gates form the basis of "Half Adders" and "Full Adders." * **Phase Detectors:** Comparing two clock signals in Phase-Locked Loops (PLLs). * **Data Encryption:** Basic logic for bit-flipping operations.