Overview
The SN74LS14DRE4 is a hex Schmitt-trigger inverter produced by Texas Instruments. This component is part of the SN74LS14 series and is packaged in a 14-pin SOIC (Small Outline Integrated Circuit) package. It operates within a supply voltage range of 4.75 to 5.25 volts and is designed for use in a wide range of applications requiring high noise immunity and clean output signals.
The device features six independent Schmitt-trigger inverters, each capable of handling slow input edges and providing jitter-free output signals. The Schmitt-trigger action ensures different input threshold levels for positive-going and negative-going signals, enhancing the component's ability to reject noise.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| Input Voltage | - | - | 7 | V |
| Junction Temperature (TJ) | - | - | 150 | °C |
| Storage Temperature (Tstg) | -65 | - | 150 | °C |
| Operating Free-Air Temperature (TA) | 0 | - | 70 | °C |
| High-Level Output Current (IOH) | - | - | -0.4 | mA |
| Low-Level Output Current (IOL) | - | - | 8 | mA |
| Positive-Going Threshold Voltage (VT+) | 1.4 | 1.6 | 1.9 | V |
| Negative-Going Threshold Voltage (VT–) | 0.5 | 0.8 | 1.1 | V |
| Propagation Delay Time (tPLH, tPHL) | 15 | 22 | - | ns |
Key Features
- Operation From Very Slow Edges: The SN74LS14DRE4 can be triggered from the slowest of input ramps, ensuring clean and jitter-free output signals.
- Improved Line-Receiving Characteristics: Enhanced performance in receiving and processing input signals.
- High Noise Immunity: The Schmitt-trigger action provides high noise immunity, making the device robust against noise and interference.
- Temperature Compensation: The circuits are temperature compensated, ensuring stable operation across a range of temperatures.
Applications
- HVAC Gateways: Suitable for use in heating, ventilation, and air conditioning systems.
- Residential Ductless Air Conditioning Outdoor Units: Used in outdoor units of ductless air conditioning systems.
- Robotic Controls: Applied in robotic control systems for reliable signal processing.
- Industrial Stepper Motors: Used in the control circuits of industrial stepper motors.
- Power Meter and Power Analyzers: Utilized in power measurement and analysis equipment.
- Digital Input Modules for Factory Automation: Employed in digital input modules for factory automation systems.
Q & A
- What is the SN74LS14DRE4 used for?
The SN74LS14DRE4 is a hex Schmitt-trigger inverter used in various applications requiring high noise immunity and clean output signals, such as HVAC systems, robotic controls, and industrial stepper motors.
- What is the operating voltage range of the SN74LS14DRE4?
The operating voltage range of the SN74LS14DRE4 is 4.75 to 5.25 volts.
- What is the significance of the Schmitt-trigger action in the SN74LS14DRE4?
The Schmitt-trigger action provides different input threshold levels for positive-going and negative-going signals, enhancing noise immunity and ensuring clean output signals even from slow input edges.
- What are the key features of the SN74LS14DRE4?
The key features include operation from very slow edges, improved line-receiving characteristics, high noise immunity, and temperature compensation.
- What is the maximum junction temperature for the SN74LS14DRE4?
The maximum junction temperature is 150°C.
- What is the typical propagation delay time for the SN74LS14DRE4?
The typical propagation delay time (tPLH, tPHL) is 22 ns.
- What are some common applications of the SN74LS14DRE4?
Common applications include HVAC gateways, residential ductless air conditioning outdoor units, robotic controls, industrial stepper motors, power meters, and digital input modules for factory automation.
- What is the package type of the SN74LS14DRE4?
The package type is SOIC (Small Outline Integrated Circuit) with 14 pins.
- What is the operating free-air temperature range for the SN74LS14DRE4?
The operating free-air temperature range is 0 to 70°C.
- Is the SN74LS14DRE4 suitable for new designs?
Yes, the SN74LS14DRE4 is recommended for new designs and is listed as active in its lifecycle status.
