Overview
The 74HC14D is a high-speed CMOS Schmitt Trigger Inverter fabricated with silicon gate C2MOS technology. Produced by Toshiba Semiconductor and Storage, this integrated circuit is designed to achieve high-speed operation similar to equivalent LSTTL (Low Power Schottky Transistor-Transistor Logic) while maintaining the low power dissipation characteristic of CMOS devices. The 74HC14D is pin-compatible with the 74HC04D but features inputs with 25% VCC hysteresis, making it suitable for receiving slow input signals and enhancing noise immunity.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Propagation Delay (tpd) | 11 ns (typ.) at VCC = 5 V | ns |
| Power Dissipation (ICC) | 1.0 µA (max) at Ta = 25°C | µA |
| Operating Voltage Range (VCC) | 2.0 to 6.0 V | V |
| Input Voltage Range (VIN) | 0 to VCC | V |
| Output Voltage Range (VOUT) | 0 to VCC | V |
| Operating Temperature Range (Topr) | -40 to 125°C | °C |
| Hysteresis Voltage (VH) | 1.1 V (typ.) at VCC = 4.5 V | V |
| Package Type | SOIC14 | - |
Key Features
- High speed: Achieves propagation delays similar to LSTTL devices.
- Low power dissipation: Maximum current consumption of 1.0 µA at 25°C.
- High noise immunity: Features 25% VCC hysteresis on inputs.
- Balanced propagation delays: tPLH ≈ tPHL.
- Wide operating voltage range: 2.0 to 6.0 V.
- Input protection: Equipped with protection circuits against static discharge and transient excess voltage.
Applications
The 74HC14D is versatile and can be used in various applications, including:
- Line receivers for slow input signals.
- Noise reduction and signal conditioning in digital circuits.
- High-speed digital logic circuits where low power consumption is crucial.
- General-purpose inverter applications requiring high noise immunity.
Q & A
- What is the 74HC14D? The 74HC14D is a high-speed CMOS Schmitt Trigger Inverter.
- Who manufactures the 74HC14D? It is manufactured by Toshiba Semiconductor and Storage.
- What is the typical propagation delay of the 74HC14D? The typical propagation delay is 11 ns at VCC = 5 V.
- What is the operating voltage range of the 74HC14D? The operating voltage range is 2.0 to 6.0 V.
- What is the maximum power dissipation of the 74HC14D? The maximum power dissipation is 1.0 µA at 25°C.
- What type of package does the 74HC14D come in? The 74HC14D comes in a SOIC14 package.
- What is the hysteresis voltage of the 74HC14D? The hysteresis voltage is 1.1 V (typ.) at VCC = 4.5 V.
- Is the 74HC14D protected against static discharge? Yes, it is equipped with protection circuits against static discharge and transient excess voltage.
- What are some common applications of the 74HC14D? It is used in line receivers, noise reduction, signal conditioning, and high-speed digital logic circuits.
- What is the operating temperature range of the 74HC14D? The operating temperature range is -40 to 125°C.
