Overview
The SN74LS14NS is a hex Schmitt-Trigger inverter integrated circuit produced by Texas Instruments. This device is part of the 74LS series, known for its low power consumption and high noise immunity. Each circuit within the SN74LS14 functions as an inverter, but with the added benefit of Schmitt-Trigger action, which provides different input threshold levels for positive-going and negative-going signals. This feature enhances the device's ability to handle slow input ramps and provides clean, jitter-free output signals.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 14-SOIC (0.209", 5.30mm) | - |
| Pins | 14 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage (VCC) | 4.75 to 5.25 | V |
| High-Level Input Voltage (VIH) | 2 | V |
| Low-Level Input Voltage (VIL) | 0.7 to 0.8 | V |
| High-Level Output Voltage (VOH) | 2.5 to 3.4 | V |
| Low-Level Output Voltage (VOL) | 0.25 to 0.4 | V |
| Positive-Going Threshold Voltage (VT+) | 1.4 to 1.9 | V |
| Negative-Going Threshold Voltage (VT–) | 0.5 to 0.8 | V |
| Junction Temperature (TJ) | 150 | °C |
| Storage Temperature (Tstg) | -65 to 150 | °C |
Key Features
- Operation from very slow edges, ensuring clean and jitter-free output signals even with slow input ramps.
- Improved line-receiving characteristics, enhancing the device's ability to handle noisy inputs.
- High noise immunity due to the Schmitt-Trigger action, which helps in rejecting noise and providing stable outputs.
- Temperature compensation, ensuring consistent performance over the operating temperature range.
Applications
- HVAC Gateways and Residential Ductless Air Conditioning Outdoor Units.
- Robotic Controls and Industrial Stepper Motors.
- Power Meter and Power Analyzers.
- Digital Input Modules for Factory Automation.
Q & A
- What is the SN74LS14NS used for? The SN74LS14NS is used as a hex Schmitt-Trigger inverter, providing clean and jitter-free output signals even from slow input ramps.
- What are the key features of the SN74LS14NS? Key features include operation from very slow edges, improved line-receiving characteristics, high noise immunity, and temperature compensation.
- What is the operating temperature range of the SN74LS14NS? The operating temperature range is from 0°C to 70°C.
- What is the supply voltage range for the SN74LS14NS? The supply voltage range is from 4.75 V to 5.25 V.
- What package types are available for the SN74LS14NS? The SN74LS14NS is available in a 14-SOIC package.
- What are some common applications of the SN74LS14NS? Common applications include HVAC gateways, robotic controls, industrial stepper motors, power meters, and digital input modules for factory automation.
- How does the Schmitt-Trigger action benefit the SN74LS14NS? The Schmitt-Trigger action provides different input threshold levels for positive-going and negative-going signals, enhancing noise immunity and the ability to handle slow input ramps.
- What are the typical high-level and low-level output voltages for the SN74LS14NS? The typical high-level output voltage is 2.5 to 3.4 V, and the typical low-level output voltage is 0.25 to 0.4 V.
- What is the junction temperature limit for the SN74LS14NS? The junction temperature limit is 150°C.
- What is the storage temperature range for the SN74LS14NS? The storage temperature range is from -65°C to 150°C.
