Texas Instruments
Зображення може бути репрезентативним.
Деталі продукту див. у специфікаціях.
SN74LVT245BPWR
Переглянути деталі Таблиці даних

SN74LVT245BPWR

Product Overview

Category

SN74LVT245BPWR belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a bidirectional voltage level translator and bus transceiver.

Characteristics

  • Low voltage operation: 2.7V to 3.6V
  • High-speed CMOS technology
  • Bidirectional data transfer capability
  • 8-bit wide interface
  • 3-state outputs for bus-oriented applications
  • Schmitt-trigger inputs for noise immunity
  • Available in TSSOP package

Package and Quantity

SN74LVT245BPWR is available in a TSSOP (Thin Shrink Small Outline Package) package. It is typically sold in reels or tubes, with a quantity of 2500 units per reel.

Specifications

Electrical Characteristics

  • Supply Voltage Range: 2.7V to 3.6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Input/Output Capacitance: 4pF typical

Timing Characteristics

  • Propagation Delay Time: 5.5ns typical
  • Rise/Fall Time: 1.5ns typical

Operating Conditions

  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The SN74LVT245BPWR has a total of 20 pins, which are assigned specific functions as follows:

  1. DIR (Direction Control)
  2. OE (Output Enable)
  3. A1 (Data Input/Output)
  4. B1 (Data Input/Output)
  5. A2 (Data Input/Output)
  6. B2 (Data Input/Output)
  7. A3 (Data Input/Output)
  8. B3 (Data Input/Output)
  9. A4 (Data Input/Output)
  10. B4 (Data Input/Output)
  11. GND (Ground)
  12. B5 (Data Input/Output)
  13. A5 (Data Input/Output)
  14. B6 (Data Input/Output)
  15. A6 (Data Input/Output)
  16. B7 (Data Input/Output)
  17. A7 (Data Input/Output)
  18. B8 (Data Input/Output)
  19. A8 (Data Input/Output)
  20. VCC (Supply Voltage)

Functional Features

The SN74LVT245BPWR is designed to provide bidirectional voltage level translation between different logic levels. It can be used to interface devices operating at different voltage levels, ensuring seamless data transfer.

Key features include: - Bidirectional data flow: Allows data transmission in both directions. - 3-state outputs: Enables bus-oriented applications by allowing multiple devices to share a common bus. - Schmitt-trigger inputs: Provides noise immunity and ensures reliable operation even in the presence of signal noise.

Advantages and Disadvantages

Advantages

  • Low voltage operation: Suitable for low-power applications.
  • High-speed CMOS technology: Enables fast data transfer.
  • Bidirectional capability: Simplifies interfacing between devices with different voltage levels.
  • 3-state outputs: Facilitates bus-oriented applications.

Disadvantages

  • Limited voltage range: Can only operate within the specified voltage range.
  • TSSOP package: May require careful handling during assembly due to its small size.

Working Principles

The SN74LVT245BPWR operates based on the principles of voltage level translation and bus transceiver functionality. It uses CMOS technology to ensure efficient and reliable data transfer between devices operating at different voltage levels.

When the DIR pin is set to a specific logic level, the device determines the direction of data flow. The OE pin enables or disables the outputs, allowing control over the bus access.

The Schmitt-trigger inputs provide noise immunity by ensuring that input signals are properly interpreted even in the presence of noise. This helps maintain signal integrity and reduces errors during data transmission.

Detailed Application Field Plans

The SN74LVT245BPWR is widely used in various applications, including but not limited to: - Microcontroller interfacing - Data communication systems - Industrial automation - Automotive electronics - Consumer electronics

In microcontroller interfacing, it allows seamless communication between microcontrollers operating at different voltage levels. It is also commonly used in data communication systems to interface devices with varying logic levels, such as UART, SPI, and I2C interfaces.

In industrial automation, the SN74LVT245BPWR facilitates communication between different modules and devices within a system. It ensures compatibility and reliable data transfer between devices with different voltage requirements.

Automotive electronics often require voltage level translation due to the presence of multiple voltage domains. The SN74LVT245BPWR enables communication between these domains, enabling efficient data exchange.

Consumer electronics applications include connecting devices with different logic levels,

Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням SN74LVT245BPWR у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of SN74LVT245BPWR:

  1. Q: What is SN74LVT245BPWR? A: SN74LVT245BPWR is a voltage level translator and bus transceiver integrated circuit (IC) manufactured by Texas Instruments.

  2. Q: What is the purpose of SN74LVT245BPWR? A: SN74LVT245BPWR is used to convert logic levels between different voltage domains, allowing communication between devices operating at different voltage levels.

  3. Q: What voltage levels can SN74LVT245BPWR handle? A: SN74LVT245BPWR supports voltage translation between 3.3V and 5V logic levels.

  4. Q: How many channels does SN74LVT245BPWR have? A: SN74LVT245BPWR has 8 bidirectional channels, allowing for simultaneous translation of 8 signals.

  5. Q: Can SN74LVT245BPWR be used in both directions? A: Yes, SN74LVT245BPWR can be used as a bidirectional level translator, enabling communication in both directions.

  6. Q: What is the maximum data rate supported by SN74LVT245BPWR? A: SN74LVT245BPWR can support data rates up to 100 Mbps.

  7. Q: Does SN74LVT245BPWR require external pull-up or pull-down resistors? A: No, SN74LVT245BPWR has built-in weak pull-up and pull-down resistors, eliminating the need for external resistors in most cases.

  8. Q: Can SN74LVT245BPWR handle high-speed signals? A: While SN74LVT245BPWR is not specifically designed for high-speed applications, it can handle moderate data rates and is suitable for many standard digital communication protocols.

  9. Q: Can SN74LVT245BPWR be used in automotive applications? A: Yes, SN74LVT245BPWR is qualified for automotive applications and can operate within the specified temperature range (-40°C to 125°C).

  10. Q: Are there any special considerations when using SN74LVT245BPWR? A: It is important to ensure that the voltage levels of the devices being connected are within the specified operating range of SN74LVT245BPWR. Additionally, proper decoupling capacitors should be used to minimize noise and ensure stable operation.

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