The **74HCT2G16GWH** is a high-speed CMOS device featuring two independent buffer gates. It is specifically designed to be pin-compatible with Low-voltage TTL (LSTTL) logic families while operating at the high speeds typical of the 74HC family. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Logic Family** | HCT (High-speed CMOS with TTL thresholds) | | **Function** | Dual Buffer (Non-Inverting) | | **Supply Voltage ($V_{CC}$)** | 4.5 V to 5.5 V | | **Input Logic Levels** | TTL Compatible (Low: 0.8V / High: 2.0V) | | **Output Drive ($I_{OH}/I_{OL}$)** | ±4.0 mA | | **Propagation Delay** | ~11 ns (typical at 5V) | | **Operating Temperature** | -40°C to +125°C | | **Package Type** | TSSOP6 (SOT363) | --- ### 2. Internal Logic and Pinout The "2G" in the part number indicates it is a **dual** gate device. Unlike a hex-buffer chip (like the 74HCT04), this comes in a tiny 6-pin package, saving significant PCB space. #### Pin Configuration (TSSOP6) 1. **1A**: Data Input 1 2. **GND**: Ground (0V) 3. **2A**: Data Input 2 4. **2Y**: Data Output 2 5. **VCC**: Supply Voltage 6. **1Y**: Data Output 1 #### Logic Table | Input (nA) | Output (nY) | | :---: | :---: | | L | L | | H | H | --- ### 3. Distinctive Features * **Level Shifting:** Because the inputs are TTL-compatible, this chip is frequently used to interface 3.3V logic signals to 5V systems. * **Low Power Consumption:** Being a CMOS device, it consumes very little static power compared to bipolar TTL chips. * **High Noise Immunity:** Designed to provide clean, squared-off digital signals from noisy or rounded inputs. * **ESD Protection:** Exceeds 2000V HBM (Human Body Model) per JESD22-A114. --- ### 4. Common Applications * **Signal Buffering:** Strengthening a signal to drive multiple loads or long PCB traces. * **Voltage Translation:** Converting 3V/3.3V logic outputs to 5V logic levels. * **Isolation:** Providing a physical buffer between sensitive microcontrollers and external peripheral components.