Overview
The SN74HC14DG4 is a hex Schmitt-trigger inverter produced by Texas Instruments. This integrated circuit is part of the 74HC series, known for its high-speed CMOS logic. The device contains six independent inverting buffers with Schmitt-trigger inputs, which provide improved noise immunity and stable output even with noisy or slow input signals.
The SN74HC14DG4 is widely used in various electronic systems due to its robust features, including a wide operating voltage range and high output drive capability. It is suitable for applications requiring reliable and stable logic operations.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5.5 | V | |
| Input Voltage (VI) | 0 | 5.5 | V | |
| Output Voltage (VO) | 0 | VCC + 0.5 | V | |
| High-Level Output Current (IOH) at VCC = 5V | -8 | mA | ||
| Low-Level Output Current (IOL) at VCC = 5V | 8 | mA | ||
| Operating Free-Air Temperature (TA) | -40 | 125 | °C | |
| Propagation Delay Time (tPLH, tPHL) at VCC = 5V, CL = 15pF | 5.5 | 8.6 | 10 | ns |
Key Features
- ESD Protection: Exceeds JESD 22 standards with 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- Wide Operating Range: Operates from 2V to 5.5V, making it versatile for various systems.
- High Output Drive: Can source or sink up to 8mA at 5V VCC.
- Low Power Consumption: Maximum ICC of 20µA.
- Schmitt-Trigger Inputs: Provides improved noise immunity and stable output with different input threshold levels for positive-going and negative-going signals.
- Latch-Up Performance: Exceeds 250mA per JESD 17).
Applications
- UPS Systems: Used in uninterruptible power supply systems for reliable logic operations).
- White Goods: Applied in household appliances for stable and noise-resistant logic functions).
- Computer Peripherals: Utilized in computer peripherals such as printers and desktop computers).
- AC Servo Drives: Employed in servo drive systems for precise and reliable control).
Q & A
- What is the primary function of the SN74HC14DG4?
The SN74HC14DG4 is a hex Schmitt-trigger inverter, providing six independent inverting buffers with Schmitt-trigger inputs.
- What is the operating voltage range of the SN74HC14DG4?
The device operates from 2V to 5.5V.
- What is the maximum output current of the SN74HC14DG4 at 5V VCC?
The device can source or sink up to 8mA at 5V VCC.
- What type of ESD protection does the SN74HC14DG4 offer?
The device exceeds JESD 22 standards with 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- What are the typical applications of the SN74HC14DG4?
It is used in UPS systems, white goods, computer peripherals, printers, and AC servo drives.
- How does the Schmitt-trigger input improve the performance of the SN74HC14DG4?
The Schmitt-trigger inputs provide improved noise immunity and stable output with different input threshold levels for positive-going and negative-going signals.
- What is the maximum propagation delay time of the SN74HC14DG4 at VCC = 5V and CL = 15pF?
The propagation delay time (tPLH, tPHL) is up to 10ns.
- What is the recommended operating temperature range for the SN74HC14DG4?
The operating free-air temperature range is from -40°C to 125°C.
- How many independent inverters does the SN74HC14DG4 contain?
The device contains six independent inverters.
- What is the maximum continuous output current of the SN74HC14DG4?
The maximum continuous output current is ±25mA.
