Overview
The SN74AC14PWRG4 is a hex Schmitt-trigger inverter integrated circuit produced by Texas Instruments. This device is part of the 74AC series, known for its high-speed CMOS logic. It features six independent inverter circuits, each with Schmitt-trigger inputs, which provide hysteresis and improve noise immunity. The device is optimized for operation at 5 V but can operate over a range of 2 V to 6 V, making it versatile for various digital logic applications.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Max | |
|---|---|---|---|---|---|
| VCC Operation | V | 2 | 6 | ||
| Input Voltage | V | 6 | |||
| Positive-going Threshold (VT+) | VCC = 3 V, TA = 25°C | V | 0.8 | 1.8 | 2.2 |
| Positive-going Threshold (VT+) | VCC = 4.5 V, TA = 25°C | V | 1.5 | 2.6 | 3.2 |
| Positive-going Threshold (VT+) | VCC = 5.5 V, TA = 25°C | V | 1.6 | 3.2 | 3.9 |
| Negative-going Threshold (VT-) | VCC = 3 V, TA = 25°C | V | 0.5 | 0.8 | 1 |
| Negative-going Threshold (VT-) | VCC = 4.5 V, TA = 25°C | V | 0.9 | 1.4 | 1.8 |
| Negative-going Threshold (VT-) | VCC = 5.5 V, TA = 25°C | V | 1.1 | 1.8 | 2.3 |
| Propagation Delay (tPLH) | VCC = 5 V, TA = 25°C | ns | 1.5 | 5 | 10 |
| Propagation Delay (tPHL) | VCC = 5 V, TA = 25°C | ns | 1.5 | 5 | 9.5 |
| Operating Temperature | °C | -40 | 85 | ||
| Junction-to-Ambient Thermal Resistance (RθJA) | TSSOP (PW) Package | °C/W | 148 |
Key Features
- VCC Operation Range: The device operates over a voltage range of 2 V to 6 V, with optimal performance at 5 V.
- Schmitt-Trigger Inputs: Provides hysteresis, improving noise immunity and allowing the device to be triggered from slow input ramps.
- Temperature Compensation: Ensures clean, jitter-free output signals across a wide temperature range.
- Input Voltage Tolerance: Inputs can accept voltages up to 5.5 V, making it suitable for voltage translation applications.
- CMOS Technology: Features balanced CMOS push-pull outputs, capable of sinking and sourcing similar currents.
- Low Drive and Slow Edge Rates: Minimizes output ringing and overshoot, ideal for bus interface applications.
- TTL-Voltage Compatible Inputs: Compatible with TTL voltage levels, enhancing its versatility in digital logic circuits.
Applications
- Synchronizing Inverted Clock Inputs: Useful in synchronizing clock signals to ensure proper timing in digital circuits.
- Debouncing Switches: The Schmitt-trigger action helps in debouncing switch inputs, reducing noise and false triggers.
- Inverting Digital Signals: Can be used to invert digital signals, which is essential in various digital logic applications.
- Bus Interface Applications: Ideal for applications where output ringing is a concern, such as in data buses and communication interfaces.
- Voltage Translation: Can translate signals from 3.3 V to 5 V, making it useful in mixed-voltage systems.
Q & A
- What is the operating voltage range of the SN74AC14PWRG4?
The SN74AC14PWRG4 operates over a voltage range of 2 V to 6 V, with optimal performance at 5 V.
- What is the significance of Schmitt-trigger inputs in the SN74AC14PWRG4?
Schmitt-trigger inputs provide hysteresis, which improves noise immunity and allows the device to be triggered from slow input ramps.
- What are the typical propagation delays for the SN74AC14PWRG4?
The typical propagation delays (tPLH and tPHL) are around 5 ns at VCC = 5 V and TA = 25°C.
- What is the maximum operating temperature for the SN74AC14PWRG4?
The maximum operating temperature is 85°C.
- Can the SN74AC14PWRG4 handle input voltages higher than VCC?
Yes, the inputs can accept voltages up to 5.5 V, making it suitable for voltage translation applications.
- What type of outputs does the SN74AC14PWRG4 have?
The device features balanced CMOS push-pull outputs, capable of sinking and sourcing similar currents.
- How does the SN74AC14PWRG4 minimize output ringing?
The device has low drive and slow edge rates, which minimize output ringing and overshoot.
- What are some common applications of the SN74AC14PWRG4?
Common applications include synchronizing inverted clock inputs, debouncing switches, inverting digital signals, and bus interface applications.
- What package types are available for the SN74AC14PWRG4?
The device is available in TSSOP (PW) package among others.
- What is the junction-to-ambient thermal resistance for the TSSOP package?
The junction-to-ambient thermal resistance (RθJA) for the TSSOP (PW) package is approximately 148°C/W.
