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SN74LVTH240DBR
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SN74LVTH240DBR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Buffer/Line Driver
  • Characteristics: Low-Voltage, High-Speed, 3-State Outputs
  • Package: SSOP (Shrink Small Outline Package)
  • Essence: Logic Level Shifter with Output Enable
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 2.7V to 3.6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 4.1ns (typical)
  • Output Drive Capability: ±24mA
  • Number of Pins: 20

Detailed Pin Configuration

  1. OE (Output Enable)
  2. A1 (Input A1)
  3. B1 (Input B1)
  4. Y1 (Output Y1)
  5. GND (Ground)
  6. Y2 (Output Y2)
  7. B2 (Input B2)
  8. A2 (Input A2)
  9. VCC (Supply Voltage)
  10. NC (No Connection)
  11. Y3 (Output Y3)
  12. GND (Ground)
  13. A3 (Input A3)
  14. B3 (Input B3)
  15. OE (Output Enable)
  16. Y4 (Output Y4)
  17. GND (Ground)
  18. B4 (Input B4)
  19. A4 (Input A4)
  20. VCC (Supply Voltage)

Functional Features

  • 3-state outputs allow multiple devices to share a common bus without interference.
  • Output enable pin (OE) controls the output state, enabling or disabling the buffer.
  • Logic level shifting capability allows interfacing between devices with different voltage levels.
  • High-speed operation ensures efficient data transfer.

Advantages and Disadvantages

Advantages: - Low-voltage operation makes it suitable for battery-powered applications. - High-speed performance enables quick data transmission. - 3-state outputs facilitate bus sharing in multi-device systems.

Disadvantages: - Limited supply voltage range restricts compatibility with certain systems. - SSOP package may require specialized handling during assembly.

Working Principles

The SN74LVTH240DBR is a buffer/line driver IC that operates as a logic level shifter. It takes input signals from one voltage level and converts them to another voltage level, allowing seamless communication between devices with different voltage requirements. The output enable pin (OE) controls the state of the outputs, enabling or disabling the buffer. This feature is particularly useful when multiple devices need to share a common bus without interfering with each other.

Detailed Application Field Plans

The SN74LVTH240DBR can be used in various applications, including:

  1. Microcontroller Interfacing: It facilitates communication between microcontrollers operating at different voltage levels.
  2. Memory Systems: It can be used in memory modules to ensure proper signal translation between memory chips and controllers.
  3. Industrial Automation: The IC enables smooth data transfer between different components of an automated system.
  4. Communication Systems: It is suitable for level shifting in communication interfaces such as UART, SPI, and I2C.
  5. Automotive Electronics: The IC can be employed in automotive systems where voltage level compatibility is crucial.

Detailed and Complete Alternative Models

  1. SN74LVC240A: Similar functionality with a wider supply voltage range (1.65V to 5.5V).
  2. SN74LVTH16245A: 16-bit version with 3-state outputs and higher output drive capability.
  3. SN74LV1T34: Single-bit buffer with 3-state output and lower power consumption.

These alternative models offer similar features but may have different specifications or pin configurations, allowing users to choose the most suitable option for their specific requirements.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av SN74LVTH240DBR i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of SN74LVTH240DBR:

  1. Question: What is SN74LVTH240DBR?
    - Answer: SN74LVTH240DBR is a specific type of integrated circuit (IC) that belongs to the LVTH series of logic devices. It is an octal buffer/line driver with 3-state outputs.

  2. Question: What is the purpose of SN74LVTH240DBR?
    - Answer: SN74LVTH240DBR is used to provide buffering and line driving capabilities in digital circuits. It can be used to amplify and transmit signals between different parts of a circuit.

  3. Question: What voltage levels does SN74LVTH240DBR support?
    - Answer: SN74LVTH240DBR supports a wide range of voltage levels, typically from 1.65V to 5.5V. This makes it compatible with various logic families and allows for easy integration into different systems.

  4. Question: How many inputs and outputs does SN74LVTH240DBR have?
    - Answer: SN74LVTH240DBR has 8 inputs and 8 outputs. It is designed to handle multiple signals simultaneously.

  5. Question: Can SN74LVTH240DBR handle bidirectional communication?
    - Answer: No, SN74LVTH240DBR is a unidirectional buffer/line driver. It can only drive signals in one direction, from its inputs to its outputs.

  6. Question: What is the maximum operating frequency of SN74LVTH240DBR?
    - Answer: SN74LVTH240DBR has a high-speed operation capability and can typically operate at frequencies up to several hundred megahertz (MHz).

  7. Question: Does SN74LVTH240DBR have built-in protection features?
    - Answer: Yes, SN74LVTH240DBR has built-in ESD (electrostatic discharge) protection on its inputs and outputs. This helps to safeguard the IC from damage during handling or in harsh environments.

  8. Question: Can SN74LVTH240DBR be used in mixed-voltage systems?
    - Answer: Yes, SN74LVTH240DBR is designed to work in mixed-voltage systems. It has a wide operating voltage range that allows for interfacing between different voltage domains.

  9. Question: What is the power supply requirement for SN74LVTH240DBR?
    - Answer: SN74LVTH240DBR typically operates with a single power supply voltage, usually in the range of 2.7V to 3.6V. It requires a stable power source for proper functioning.

  10. Question: Are there any application notes or reference designs available for SN74LVTH240DBR?
    - Answer: Yes, Texas Instruments, the manufacturer of SN74LVTH240DBR, provides application notes and reference designs that can help users understand and implement the IC effectively in their technical solutions. These resources can be found on their official website.