The **U74ACT08L-S14-R** is a high-speed CMOS logic integrated circuit. Specifically, it is a **Quadruple 2-Input Positive-AND Gate**. This part is designed to perform the Boolean function $Y = A \cdot B$ or $Y = \overline{\overline{A} + \overline{B}}$. Below is a detailed breakdown of its electronic specifications and features. --- ## 1. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Logic Type** | AND Gate | | **Number of Gates** | 4 (Quadruple) | | **Inputs per Gate** | 2 | | **Supply Voltage ($V_{CC}$)** | 4.5V to 5.5V | | **Input Threshold** | TTL Compatible (ACT Series) | | **Output Current ($I_{OH}/I_{OL}$)** | ±24 mA | | **Propagation Delay ($t_{pd}$)** | ~1.0 ns to 9.0 ns (Load dependent) | | **Package Type** | SOP-14 (Small Outline Package) | | **Operating Temperature** | -40°C to +85°C | --- ## 2. Pin Configuration (SOP-14) The device contains four independent gates labeled 1 through 4. | Pin No. | Symbol | Description | | :--- | :--- | :--- | | 1, 2 | 1A, 1B | Inputs for Gate 1 | | 3 | 1Y | Output for Gate 1 | | 4, 5 | 2A, 2B | Inputs for Gate 2 | | 6 | 2Y | Output for Gate 2 | | 7 | GND | Ground (0V) | | 8, 9 | 3Y | Output for Gate 3 | | 10, 11 | 3A, 3B | Inputs for Gate 3 | | 12, 13 | 4Y | Output for Gate 4 | | 14 | $V_{CC}$ | Power Supply | --- ## 3. Key Electronic Features ### A. ACT Technology The "ACT" in the part number stands for **Advanced CMOS with TTL-compatible inputs**. * It combines the high speed of bipolar logic (TTL) with the low power consumption of CMOS. * The input logic levels are compatible with standard TTL devices ($V_{IL} = 0.8V$, $V_{IH} = 2.0V$), allowing it to interface between different voltage logic families. ### B. High Output Drive With a current sourcing/sinking capability of **24mA**, this chip can drive heavy capacitive loads or multiple logic gates without significant signal degradation. ### C. Low Power Consumption As a CMOS device, its static power consumption is extremely low, making it ideal for battery-operated or heat-sensitive applications. --- ## 4. Logic Function (Truth Table) For each individual gate within the chip, the logic follows the standard AND operation: | Input A | Input B | Output Y | | :---: | :---: | :---: | | L | L | **L** | | L | H | **L** | | H | L | **L** | | H | H | **H** | --- ## 5. Part Number Decoding * **U74**: UTC (Unisonic Technologies Co.) Standard Logic series. * **ACT**: Advanced CMOS, TTL-compatible inputs. * **08**: Function code for "Quad 2-Input AND Gate". * **L**: Lead-free/Halogen-free. * **S14**: Package code for SOP-14. * **R**: Tape and Reel packaging.