Texas Instruments
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SN74AHCT14DR
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SN74AHCT14DR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Logic Gates
  • Characteristics: Hex Schmitt-Trigger Inverter
  • Package: SOIC-14
  • Essence: High-Speed CMOS Technology
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 2V to 5.5V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 11 ns (typical)
  • Quiescent Current: 4 µA (maximum)

Detailed Pin Configuration

The SN74AHCT14DR has a total of 14 pins, which are numbered as follows:

  1. Input A1
  2. Output Y1
  3. Input A2
  4. Output Y2
  5. Input A3
  6. Output Y3
  7. Ground (GND)
  8. Input A4
  9. Output Y4
  10. Input A5
  11. Output Y5
  12. Input A6
  13. Output Y6
  14. VCC (Supply Voltage)

Functional Features

  • Hex Schmitt-Trigger Inverter: The SN74AHCT14DR consists of six independent inverters with Schmitt-trigger inputs. It provides hysteresis to improve noise immunity and signal integrity.
  • High-Speed CMOS Technology: This IC is built using high-speed CMOS technology, allowing for fast switching times and low power consumption.
  • Wide Supply Voltage Range: The SN74AHCT14DR can operate within a wide supply voltage range of 2V to 5.5V, making it compatible with various systems.
  • Low Quiescent Current: With a maximum quiescent current of 4 µA, this IC minimizes power consumption when not actively switching.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide supply voltage range - Low power consumption - Schmitt-trigger inputs for improved noise immunity

Disadvantages: - Limited number of inverters (6 in total) - Not suitable for applications requiring a large number of logic gates

Working Principles

The SN74AHCT14DR operates based on the principles of CMOS technology. Each inverter within the IC consists of a PMOS transistor and an NMOS transistor connected in series. The input signal is applied to the gate terminals of both transistors, controlling their conductivity. When the input voltage crosses the threshold level determined by the Schmitt-trigger, the output switches states.

Detailed Application Field Plans

The SN74AHCT14DR is commonly used in various digital logic applications, including but not limited to: - Signal conditioning - Level shifting - Oscillator circuits - Pulse shaping - Noise filtering

Detailed and Complete Alternative Models

  1. SN74AHCT14PW: SOIC-14 package, same functionality as SN74AHCT14DR.
  2. CD40106BE: DIP-14 package, hex Schmitt-trigger inverter with similar characteristics.
  3. MC74VHC1G14: SOT-23-5 package, single Schmitt-trigger inverter with comparable specifications.

These alternative models offer similar functionality and can be used as substitutes for the SN74AHCT14DR depending on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN74AHCT14DR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SN74AHCT14DR in technical solutions:

  1. Q: What is SN74AHCT14DR? A: SN74AHCT14DR is a hex Schmitt-trigger inverter IC, commonly used for signal conditioning and level shifting applications.

  2. Q: What is the operating voltage range of SN74AHCT14DR? A: The operating voltage range of SN74AHCT14DR is typically between 2V and 5.5V.

  3. Q: What is the maximum output current of SN74AHCT14DR? A: The maximum output current of SN74AHCT14DR is around 8mA.

  4. Q: Can SN74AHCT14DR be used for level shifting between different voltage domains? A: Yes, SN74AHCT14DR can be used for level shifting between different voltage domains as long as the voltage levels are within its operating range.

  5. Q: What is the purpose of the Schmitt-trigger input in SN74AHCT14DR? A: The Schmitt-trigger input helps in providing hysteresis, making the IC less sensitive to noise and ensuring clean switching of signals.

  6. Q: Can SN74AHCT14DR be used for buffering weak signals? A: Yes, SN74AHCT14DR can be used to buffer weak signals and provide a stronger output signal.

  7. Q: What is the typical propagation delay of SN74AHCT14DR? A: The typical propagation delay of SN74AHCT14DR is around 9ns.

  8. Q: Is SN74AHCT14DR suitable for high-speed applications? A: While SN74AHCT14DR is not specifically designed for high-speed applications, it can still be used in moderate-speed digital circuits.

  9. Q: Can SN74AHCT14DR handle bidirectional signals? A: No, SN74AHCT14DR is a unidirectional IC and cannot handle bidirectional signals without additional circuitry.

  10. Q: Are there any specific precautions to consider when using SN74AHCT14DR? A: It is important to ensure that the power supply voltage does not exceed the specified range, and proper decoupling capacitors should be used near the IC to minimize noise and voltage fluctuations.

Please note that these answers are general and may vary depending on the specific application and requirements.