Texas Instruments
Billedet kan være en repræsentation.
Se specifikationer for produktdetaljer.
SN74AHC244PWG4
Se detaljer DataSheets

SN74AHC244PWG4

Product Overview

  • Category: Integrated Circuit
  • Use: Buffer/Line Driver
  • Characteristics: High-Speed, Low-Power, Non-Inverting
  • Package: TSSOP-20
  • Essence: Logic Level Shifter
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 2 V to 5.5 V
  • Input Voltage Range: 0 V to VCC
  • Output Voltage Range: 0 V to VCC
  • High-Level Input Voltage: 0.7 x VCC to VCC
  • Low-Level Input Voltage: 0 V to 0.3 x VCC
  • High-Level Output Voltage: 0.9 x VCC to VCC
  • Low-Level Output Voltage: 0 V to 0.1 x VCC
  • Maximum Operating Frequency: 100 MHz
  • Propagation Delay: 6 ns (typical)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74AHC244PWG4 has a total of 20 pins arranged as follows:

__ __ A1 | 1 20 | VCC A2 | 2 19 | B1 A3 | 3 18 | B2 A4 | 4 17 | B3 A5 | 5 16 | B4 A6 | 6 15 | B5 A7 | 7 14 | B6 GND | 8 13 | B7 OE | 9 12 | B8 Y |10 11 | GND ‾‾ ‾‾

Functional Features

  • Non-Inverting Buffer/Line Driver: The SN74AHC244PWG4 is designed to provide non-inverting buffering and line driving capabilities.
  • High-Speed Operation: With a maximum operating frequency of 100 MHz, it can handle high-speed data transmission.
  • Low-Power Consumption: The integrated circuit is designed to consume low power, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages: - Non-inverting buffer allows easy interfacing between different logic families. - High-speed operation enables efficient data transfer. - Low-power consumption extends battery life in portable applications.

Disadvantages: - Limited voltage range (2 V to 5.5 V) may not be suitable for all applications. - Propagation delay of 6 ns may introduce timing issues in certain high-speed applications.

Working Principles

The SN74AHC244PWG4 operates by receiving input signals on the A1-A7 pins and providing amplified, non-inverted output signals on the Y pin. The OE (Output Enable) pin controls the output state, allowing the user to enable or disable the buffer. When the OE pin is low, the buffer is enabled, and the input signals are passed through to the output. When the OE pin is high, the buffer is disabled, and the output remains in a high-impedance state.

Detailed Application Field Plans

The SN74AHC244PWG4 is commonly used in various applications, including:

  1. Microcontroller Interfacing: It facilitates communication between microcontrollers and other peripheral devices by providing level shifting and buffering capabilities.
  2. Data Communication Systems: The IC is used in data communication systems to amplify and transmit signals between different components.
  3. Memory Interfaces: It is employed in memory interfaces to ensure proper signal levels and drive capability.
  4. Industrial Automation: The SN74AHC244PWG4 finds applications in industrial automation systems for signal buffering and line driving.

Detailed and Complete Alternative Models

  1. SN74AHC244N: DIP-20 package, similar specifications.
  2. SN74LVC244APW: TSSOP-20 package, lower power consumption, compatible pin configuration.
  3. SN74HCT244PWG4: TSSOP-20 package, higher voltage range, compatible pin configuration.

(Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's datasheet for a complete list.)

Word count: 445 words

Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af SN74AHC244PWG4 i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of SN74AHC244PWG4 in technical solutions:

  1. Q: What is SN74AHC244PWG4? A: SN74AHC244PWG4 is a non-inverting octal buffer and line driver with 3-state outputs, commonly used in digital logic applications.

  2. Q: What is the voltage supply range for SN74AHC244PWG4? A: The voltage supply range for SN74AHC244PWG4 is typically between 2 V and 5.5 V.

  3. Q: What is the maximum output current that SN74AHC244PWG4 can drive? A: SN74AHC244PWG4 can drive up to 8 mA of output current per channel.

  4. Q: Can SN74AHC244PWG4 be used as a level shifter? A: Yes, SN74AHC244PWG4 can be used as a level shifter to convert signals between different voltage levels.

  5. Q: How many channels does SN74AHC244PWG4 have? A: SN74AHC244PWG4 has 8 channels, allowing it to buffer or drive up to 8 separate signals.

  6. Q: What is the propagation delay of SN74AHC244PWG4? A: The typical propagation delay of SN74AHC244PWG4 is around 7 ns.

  7. Q: Can SN74AHC244PWG4 be used in high-speed applications? A: Yes, SN74AHC244PWG4 is designed for high-speed operation and can be used in applications with fast switching requirements.

  8. Q: Is SN74AHC244PWG4 compatible with TTL logic levels? A: Yes, SN74AHC244PWG4 is compatible with both CMOS and TTL logic levels.

  9. Q: Can SN74AHC244PWG4 be used in bidirectional applications? A: No, SN74AHC244PWG4 is a unidirectional buffer and line driver, not suitable for bidirectional communication.

  10. Q: What is the package type of SN74AHC244PWG4? A: SN74AHC244PWG4 is available in a TSSOP-20 package, which is a surface-mount package with 20 pins.

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