Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Series | 74LS |
| Part Status | Active |
| Logic Type | Inverter |
| Number of Circuits | 6 |
| Number of Inputs | 1 |
| Features | Schmitt Trigger |
| Voltage - Supply | 4.75V ~ 5.25V |
| Current - Output High Low | 400µA, 8mA |
| Logic Level - Low | 0.5V |
| Logic Level - High | 1.9V |
| Max Propagation Delay @ V Max CL | 22ns @ 5V, 15pF |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Supplier Device Package | 14-SOIC |
Tổng quan
Description
The SN74LS14DR is a Schmitt-trigger hex inverter IC (integrated circuit) manufactured by Texas Instruments. It features six independent inverters with Schmitt-trigger action, which provides hysteresis for cleaner signal transitions in noisy environments. This characteristic makes it ideal for applications requiring signal conditioning, such as debouncing switches or transforming slow-rising input signals into sharp digital logic signals.
The device operates within a wide supply voltage range and is compatible with TTL logic levels. It’s known for its fast switching speeds and low power consumption, which are advantageous in various digital applications. The SN74LS14DR is packaged in a small-outline surface-mount design, making it suitable for compact circuit boards.
Key specifications include a typical propagation delay of 22ns and a maximum low-level output current of 8mA. It operates within a temperature range of 0°C to 70°C. The device ensures reliable performance in digital circuits by mitigating the effects of noise and signal degradation, making it a versatile choice for enhancing signal integrity.
The device operates within a wide supply voltage range and is compatible with TTL logic levels. It’s known for its fast switching speeds and low power consumption, which are advantageous in various digital applications. The SN74LS14DR is packaged in a small-outline surface-mount design, making it suitable for compact circuit boards.
Key specifications include a typical propagation delay of 22ns and a maximum low-level output current of 8mA. It operates within a temperature range of 0°C to 70°C. The device ensures reliable performance in digital circuits by mitigating the effects of noise and signal degradation, making it a versatile choice for enhancing signal integrity.
Equivalent
The SN74LS14DR is a hex Schmitt-trigger inverter IC. Equivalent products include:
1. 74HC14: A high-speed CMOS version.
2. CD40106: A CMOS variant with similar functionality.
3. 74HCT14: A high-speed CMOS device compatible with TTL voltages.
4. MC14584: Another CMOS Schmitt-trigger hex inverter.
5. NXP 74LV14: Offers similar functions with low voltage.
Always check the datasheets for compatibility in pin configuration and electrical characteristics before substitution.
1. 74HC14: A high-speed CMOS version.
2. CD40106: A CMOS variant with similar functionality.
3. 74HCT14: A high-speed CMOS device compatible with TTL voltages.
4. MC14584: Another CMOS Schmitt-trigger hex inverter.
5. NXP 74LV14: Offers similar functions with low voltage.
Always check the datasheets for compatibility in pin configuration and electrical characteristics before substitution.
Features
The SN74LS14DR is a hex Schmitt-trigger inverter from Texas Instruments. Key features include:
1. Schmitt-Trigger Inputs: These provide hysteresis, which helps in transforming slow or noisy input signals into clean digital outputs, reducing noise sensitivity.
2. Hex Inverter: Contains six independent inverters in a single package, allowing multiple signal inversions.
3. TTL Compatible: Designed for compatibility with TTL (Transistor-Transistor Logic) systems, ensuring seamless integration with other TTL components.
4. High Noise Immunity: Enhanced noise rejection due to the Schmitt-trigger functionality, making it suitable for applications with signal quality issues.
5. Wide Operating Voltage: Typically operates in the range of 4.75V to 5.25V, standard for TTL devices.
6. Fast Switching: Offers quick response times, ideal for timing-critical applications.
7. 14-Pin SOIC Package: The "DR" suffix indicates this is a 14-pin small-outline integrated circuit (SOIC) package, suitable for space-constrained designs.
These features make the SN74LS14DR suitable for various digital applications needing robust signal conditioning and inversion.
1. Schmitt-Trigger Inputs: These provide hysteresis, which helps in transforming slow or noisy input signals into clean digital outputs, reducing noise sensitivity.
2. Hex Inverter: Contains six independent inverters in a single package, allowing multiple signal inversions.
3. TTL Compatible: Designed for compatibility with TTL (Transistor-Transistor Logic) systems, ensuring seamless integration with other TTL components.
4. High Noise Immunity: Enhanced noise rejection due to the Schmitt-trigger functionality, making it suitable for applications with signal quality issues.
5. Wide Operating Voltage: Typically operates in the range of 4.75V to 5.25V, standard for TTL devices.
6. Fast Switching: Offers quick response times, ideal for timing-critical applications.
7. 14-Pin SOIC Package: The "DR" suffix indicates this is a 14-pin small-outline integrated circuit (SOIC) package, suitable for space-constrained designs.
These features make the SN74LS14DR suitable for various digital applications needing robust signal conditioning and inversion.
Pinout
The SN74LS14DR is a hex Schmitt-trigger inverter IC. It features six independent inverters with Schmitt-trigger inputs, which provide greater noise immunity and stable operation. The "DR" suffix indicates that the device is in a small outline integrated circuit (SOIC) package.
The SN74LS14DR has a total of 14 pins, which are typically configured as follows:
1. VCC (Pin 14): Supply voltage.
2. GND (Pin 7): Ground.
3. A1 to A6 (Pins 1, 3, 5, 9, 11, 13): Inputs for the six inverters.
4. Y1 to Y6 (Pins 2, 4, 6, 8, 10, 12): Outputs for the corresponding inverters.
Each inverter takes an input signal and provides an inverted output, with the Schmitt-trigger functionality adding hysteresis to the input signal. This makes the SN74LS14DR particularly useful in applications where signal integrity is compromised by noise, such as in signal conditioning, waveform shaping, and creating clock or pulse edges from slow or noisy input signals.
The SN74LS14DR has a total of 14 pins, which are typically configured as follows:
1. VCC (Pin 14): Supply voltage.
2. GND (Pin 7): Ground.
3. A1 to A6 (Pins 1, 3, 5, 9, 11, 13): Inputs for the six inverters.
4. Y1 to Y6 (Pins 2, 4, 6, 8, 10, 12): Outputs for the corresponding inverters.
Each inverter takes an input signal and provides an inverted output, with the Schmitt-trigger functionality adding hysteresis to the input signal. This makes the SN74LS14DR particularly useful in applications where signal integrity is compromised by noise, such as in signal conditioning, waveform shaping, and creating clock or pulse edges from slow or noisy input signals.
Manufacturer
The SN74LS14DR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide array of electronic components and integrated circuits. These products are used in various applications, including consumer electronics, automotive, industrial, and communication equipment. TI is known for its innovation in analog and embedded processing technologies, and it serves a diverse range of industries by providing products that enhance performance and enable technological advancements.
Application
The SN74LS14DR is a hex Schmitt-trigger inverter IC used in digital electronics. Its application areas include:
1. Signal Conditioning: Converts noisy or slowly-changing input signals into sharp digital transitions.
2. Waveform Shaping: Generates square waves from sinusoidal or other waveform inputs.
3. Debouncing: Used in switches and pushbuttons to eliminate noise and provide stable digital signals.
4. Oscillator Circuits: Forms the basis of oscillator circuits for clock generation.
5. Data Communication: Cleans up signals in data transmission lines and interfaces.
6. Digital Logic Circuits: Interfaces between analog and digital environments, ensuring proper logic levels for processing.
These applications leverage its capability to handle slowly changing input signals effectively.
1. Signal Conditioning: Converts noisy or slowly-changing input signals into sharp digital transitions.
2. Waveform Shaping: Generates square waves from sinusoidal or other waveform inputs.
3. Debouncing: Used in switches and pushbuttons to eliminate noise and provide stable digital signals.
4. Oscillator Circuits: Forms the basis of oscillator circuits for clock generation.
5. Data Communication: Cleans up signals in data transmission lines and interfaces.
6. Digital Logic Circuits: Interfaces between analog and digital environments, ensuring proper logic levels for processing.
These applications leverage its capability to handle slowly changing input signals effectively.
Package
The SN74LS14DR is a hex inverting Schmitt trigger IC from Texas Instruments. The "DR" in its designation signifies that it is in a SOIC-14 package, which is a Small Outline Integrated Circuit with 14 pins. This package type is suitable for surface mounting on PCBs.
