Overview
The SN74ACT14DRE4 is a hex Schmitt-trigger inverter integrated circuit produced by Texas Instruments. This device is part of the ACT series and is designed to operate within the 4.5V to 5.5V voltage range, making it suitable for various digital logic applications. The SN74ACT14DRE4 features six independent inverters, each with Schmitt-trigger inputs, which provide hysteresis and improve noise immunity. This component is particularly useful in applications where clean, jitter-free output signals are required, even with slow input ramps.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| VCC (Supply Voltage) | V | 4.5 | 5.5 | |
| VI (Input Voltage) | V | 0 | VCC | |
| VO (Output Voltage) | V | 0 | VCC | |
| IOH (High-Level Output Current) | mA | -24 | -24 | |
| IOL (Low-Level Output Current) | mA | 24 | 24 | |
| TA (Operating Free-Air Temperature) | °C | -40 | 85 | |
| tpd (Propagation Delay Time) | ns | 11 | ||
| VT+ (Positive-Going Threshold) | V | 1.2 | 1.5 | 1.9 |
| VT- (Negative-Going Threshold) | V | 0.5 | 0.9 | 1.2 |
| ΔVT (Hysteresis) | V | 0.4 | 0.6 | 1.4 |
Key Features
- VCC operation from 4.5V to 5.5V
- Inputs accept voltages up to 5.5V
- Maximum propagation delay time of 11ns at 5V
- Inputs are TTL-voltage compatible
- Schmitt-trigger inputs with hysteresis for improved noise immunity
- Temperature-compensated to ensure clean, jitter-free output signals
- Balanced CMOS push-pull outputs to minimize output ringing
- Overvoltage tolerant inputs
- Slow edge rates to minimize output ringing
Applications
- Synchronizing inverted clock inputs
- Debouncing switches
- Inverting digital signals
- Bus interface applications where output ringing is a concern
- Voltage translation from 3.3V to 5V
Q & A
- What is the operating voltage range of the SN74ACT14DRE4?
The operating voltage range is from 4.5V to 5.5V.
- What is the maximum propagation delay time at 5V?
The maximum propagation delay time at 5V is 11ns.
- Are the inputs TTL-voltage compatible?
- What is the purpose of the Schmitt-trigger inputs?
The Schmitt-trigger inputs provide hysteresis, which improves noise immunity.
- Can the inputs handle voltages above VCC?
- What are the typical applications of the SN74ACT14DRE4?
- How do the balanced CMOS push-pull outputs help in the device's operation?
- What is the recommended operating temperature range for the SN74ACT14DRE4?
- What should be considered when designing with the SN74ACT14DRE4 to prevent output ringing?
- Are there any specific precautions to take when handling the SN74ACT14DRE4?
