## CD74ACT05M96: Technical Overview The **CD74ACT05M96** is a high-speed CMOS logic integrated circuit featuring **six independent inverters with open-drain outputs**. It is part of the "ACT" series, meaning it is Advanced CMOS technology with TTL-compatible inputs. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Logic Family** | ACT (Advanced CMOS, TTL-Compatible) | | **Logic Function** | Inverter (NOT Gate) | | **Output Type** | **Open-Drain** | | **Number of Channels** | 6 (Hex) | | **Supply Voltage (Vcc)** | 4.5V to 5.5V | | **Input Threshold** | TTL-Compatible (Low: 0.8V, High: 2.0V) | | **Package** | SOIC-14 (Small Outline Integrated Circuit) | | **Propagation Delay** | ~3.5ns to 8ns (Typical at 5V) | | **Maximum Output Current** | 24mA (Sink) | --- ### 2. Detailed Electronic Characteristics #### A. Open-Drain Output Unlike standard push-pull outputs, an open-drain output can only pull the voltage **Low** (to Ground). To achieve a **High** logic state, an external **pull-up resistor** must be connected to the output pin. * **Wired-AND Logic:** Multiple open-drain outputs can be connected together to a single pull-up resistor. If any one output goes Low, the entire line goes Low. * **Level Shifting:** Because the output is not tied to Vcc, you can pull the output to a different voltage level (e.g., 3.3V or 12V) than the chip’s supply voltage (5V). #### B. ACT Technology The "ACT" designation indicates that the inputs are compatible with standard TTL logic levels. This makes it ideal for interfacing older bipolar TTL circuits with modern high-speed CMOS circuits. #### C. Power Efficiency As a CMOS device, it consumes very little static power compared to older bipolar (74LS) series, while maintaining high-speed switching capabilities. --- ### 3. Pin Configuration (SOIC-14) ```text +---u---+ 1A |1 14| Vcc 1Y |2 13| 6A 2A |3 12| 6Y 2Y |4 11| 5A 3A |5 10| 5Y 3Y |6 9| 4A GND |7 8| 4Y +-------+ (A = Input, Y = Open-Drain Output) ``` --- ### 4. Common Applications * **Driving LEDs or Relays:** The 24mA sink current is sufficient for driving small indicators or triggering transistors. * **Voltage Level Shifting:** Translating 5V logic to a higher or lower voltage bus. * **Wired-OR/AND Buses:** Used in interrupt lines or shared communication buses (like I2C-style configurations). * **Signal Inversion:** Simple NOT gate operations where open-collector/drain properties are required.