Hex Schmitt-trigger Inverters The SN54LS14 is a hex Schmitt-trigger inverter manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Logic Type:** Hex Schmitt-Trigger Inverter
- **Technology Family:** LS (Low-Power Schottky)
- **Supply Voltage Range (VCC):**
- SN54LS14 (Military Grade): 4.5V to 5.5V
- SN74LS14 (Commercial Grade): 4.75V to 5.25V
- **Input Voltage (VIH/VIL):**
- VIH (High-Level Input Voltage): 2V (min)
- VIL (Low-Level Input Voltage): 0.8V (max)
- **Output Voltage (VOH/VOL):**
- VOH (High-Level Output Voltage): 2.5V (min) at IOH = -0.4mA
- VOL (Low-Level Output Voltage): 0.4V (max) at IOL = 4mA
- **Propagation Delay (tPLH/tPHL):** Typically 15ns at 5V
- **Hysteresis (Input Threshold Difference):** ~0.8V
- **Operating Temperature Range:**
- SN54LS14: -55°C to +125°C
- SN74LS14: 0°C to +70°C
- **Package Options:** Ceramic DIP (SN54LS14), Plastic DIP (SN74LS14)
### **Descriptions:**
- The SN54LS14 is a hex inverter with Schmitt-trigger inputs, designed for noise immunity and signal conditioning.
- It converts slowly changing or noisy input signals into clean digital outputs.
- Suitable for military and industrial applications due to its wide temperature range (SN54LS14).
### **Features:**
- **Six Independent Inverters:** Each with Schmitt-trigger action.
- **Noise Immunity:** Built-in hysteresis improves noise rejection.
- **Wide Operating Voltage:** Supports standard TTL logic levels.
- **Low Power Consumption:** Typical power dissipation of 10mW per gate.
- **High Fan-Out:** Can drive up to 10 LS-TTL loads.
- **Military-Grade Reliability (SN54LS14):** Meets MIL-STD-883 standards.
For detailed datasheets, refer to Texas Instruments' official documentation.
