Overview
The SN74HCT14DRE4 is a hex inverter integrated circuit produced by Texas Instruments. This device is part of the SN74HCT14 series, which features six independent inverters with Schmitt-trigger inputs. Each inverter performs the Boolean function Y = A in positive logic, making it suitable for various digital logic applications. The Schmitt-trigger inputs provide noise immunity and hysteresis, which helps in rejecting noisy or slow inputs that could cause oscillations or excessive current draw.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 4.5 V to 5.5 V | V |
| Operating Temperature Range | -40°C to 85°C | °C |
| Propagation Delay (tpd) at Nominal Voltage | 18 ns (typical), 38 ns (max) | ns |
| Output Drive (IOL/IOH) | ±4 mA at 5 V | mA |
| Input Current | 1 µA (maximum) | µA |
| Power Consumption (ICC) | 20 µA (maximum) | µA |
| Package Type | 14-SOIC | |
| Package Dimensions | 8.70 mm × 3.90 mm | mm |
Key Features
- Buffered Inputs: The device features buffered inputs which help in improving the signal quality.
- Schmitt-Trigger Inputs: Provides noise immunity and hysteresis, allowing the device to reject noisy or slow inputs.
- Wide Operating Voltage Range: Operates within a voltage range of 4.5 V to 5.5 V.
- Low Power Consumption: Maximum ICC of 20 µA, making it energy-efficient.
- High Output Drive Capability: Can drive up to 10 LSTTL loads and source or sink 8 mA at 5-V VCC.
- TTL-Voltage Compatible Inputs: Inputs are compatible with TTL voltage levels.
- Balanced CMOS Push-Pull Outputs: Outputs can sink and source similar currents, ensuring balanced drive capability.
Applications
- UPS Systems: Used in uninterruptible power supply systems for reliable operation.
- White Goods: Applied in household appliances for robust digital logic functions.
- Computer Peripherals: Utilized in various computer peripherals such as printers and desktop computers.
- AC Servo Drives: Employed in servo drive systems for precise control and noise immunity.
- Debouncing Switches: Effective in debouncing switch inputs to prevent multiple triggers from a single switch press.
- Synchronizing Inverted Clock Inputs: Used to synchronize and invert clock signals in digital circuits.
Q & A
- What is the primary function of the SN74HCT14DRE4?
The primary function of the SN74HCT14DRE4 is to perform six independent inverter operations with Schmitt-trigger inputs.
- What is the operating voltage range of the SN74HCT14DRE4?
The operating voltage range is from 4.5 V to 5.5 V.
- What is the significance of Schmitt-trigger inputs in the SN74HCT14DRE4?
Schmitt-trigger inputs provide noise immunity and hysteresis, helping to reject noisy or slow inputs that could cause oscillations or excessive current draw.
- How many LSTTL loads can the SN74HCT14DRE4 drive?
The device can drive up to 10 LSTTL loads.
- What is the maximum propagation delay (tpd) of the SN74HCT14DRE4 at nominal voltage?
The maximum propagation delay is 38 ns.
- What is the package type and dimensions of the SN74HCT14DRE4?
The package type is 14-SOIC, with dimensions of 8.70 mm × 3.90 mm.
- Is the SN74HCT14DRE4 compatible with TTL voltage levels?
- What are some common applications of the SN74HCT14DRE4?
- How does the SN74HCT14DRE4 handle noisy inputs?
The device uses Schmitt-trigger inputs to provide hysteresis and reject noisy or slow inputs.
- What is the maximum output drive capability of the SN74HCT14DRE4?
The device can source or sink up to 8 mA at 5-V VCC.
