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SN74LVC4245APWT
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SN74LVC4245APWT

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Level Shifter
  • Characteristics:
    • Bidirectional voltage translation between different logic levels
    • Low power consumption
    • High-speed operation
    • Wide operating voltage range
  • Package: TSSOP (Thin Shrink Small Outline Package)
  • Essence: The SN74LVC4245APWT is a voltage level shifter IC that allows bidirectional translation of signals between different logic levels.
  • Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

  • Supply Voltage Range: 1.65V to 5.5V
  • Logic Voltage Levels:
    • High-Level Input Voltage (VIH): 2.3V to VCC + 0.5V
    • Low-Level Input Voltage (VIL): -0.5V to 0.8V
    • High-Level Output Voltage (VOH): VCC - 0.4V to VCC
    • Low-Level Output Voltage (VOL): 0V to 0.4V
  • Operating Temperature Range: -40°C to 85°C
  • Maximum Propagation Delay: 6.5ns
  • Maximum Operating Frequency: 100MHz

Detailed Pin Configuration

The SN74LVC4245APWT has a total of 20 pins, which are divided into two groups: A and B. Each group consists of eight bidirectional I/O pins and two control pins.

  • Group A:

    • Pins 1-8: Bidirectional I/O pins (A1-A8)
    • Pin 9: Output Enable (OEAB)
    • Pin 10: Direction Control (DIR)

  • Group B:

    • Pins 11-18: Bidirectional I/O pins (B1-B8)
    • Pin 19: Output Enable (OEBA)
    • Pin 20: Direction Control (DIR)

Functional Features

  • Bidirectional Voltage Translation: The SN74LVC4245APWT allows for bidirectional translation of signals between different logic levels, making it suitable for interfacing between devices operating at different voltage levels.

  • High-Speed Operation: With a maximum propagation delay of 6.5ns and a maximum operating frequency of 100MHz, this IC ensures efficient signal transmission in high-speed applications.

  • Low Power Consumption: The SN74LVC4245APWT is designed to minimize power consumption, making it suitable for battery-powered devices or applications where power efficiency is crucial.

  • Wide Operating Voltage Range: This IC supports voltage level shifting between 1.65V and 5.5V, providing flexibility in various electronic systems.

Advantages and Disadvantages

Advantages: - Bidirectional voltage translation - High-speed operation - Low power consumption - Wide operating voltage range

Disadvantages: - Limited number of I/O pins (8 per group) - Requires external control signals for direction and output enable

Working Principles

The SN74LVC4245APWT operates based on the principles of voltage level shifting using a combination of MOSFETs and CMOS technology. It utilizes control signals to determine the direction of data flow and enable/disable the output.

When the direction control pin (DIR) is set to a specific logic level, the IC allows bidirectional data transfer between the A and B groups of pins. The output enable pins (OEAB and OEBA) are used to enable or disable the outputs, allowing for flexible control over the data transmission.

Detailed Application Field Plans

The SN74LVC4245APWT finds applications in various fields, including:

  1. Microcontroller Interfacing: It can be used to interface microcontrollers operating at different voltage levels, enabling communication between them.

  2. Level Shifting in Communication Systems: The IC facilitates voltage level translation in communication systems, allowing compatibility between devices with different logic levels.

  3. Sensor Interfaces: It can be employed in sensor interfaces to enable communication between sensors and microcontrollers operating at different voltage levels.

  4. Industrial Automation: The SN74LVC4245APWT is suitable for voltage level shifting in industrial automation systems, where different components may operate at varying logic levels.

Detailed and Complete Alternative Models

  1. TXB0108PWR: This 8-bit bidirectional voltage-level translator offers similar functionality to the SN74LVC4245APWT and comes in a TSSOP package.

  2. PCA9306DCTR: A dual bidirectional I2C-bus and SMBus voltage-level translator that provides level shifting capabilities for I2C communication.

  3. CD4050BE: This hex non-inverting buffer and converter IC can also be used for voltage level shifting applications.

  4. SN74LVC1T45DBVR: A single-bit

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av SN74LVC4245APWT i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of SN74LVC4245APWT:

  1. Q: What is SN74LVC4245APWT? A: SN74LVC4245APWT is a bidirectional voltage-level translator IC (Integrated Circuit) that can be used to convert signals between different voltage levels.

  2. Q: What is the operating voltage range of SN74LVC4245APWT? A: SN74LVC4245APWT operates within a voltage range of 1.65V to 5.5V.

  3. Q: Can SN74LVC4245APWT be used for level shifting between 3.3V and 5V systems? A: Yes, SN74LVC4245APWT is commonly used for level shifting between 3.3V and 5V systems.

  4. Q: How many bidirectional channels does SN74LVC4245APWT have? A: SN74LVC4245APWT has 8 bidirectional channels, allowing for simultaneous translation of multiple signals.

  5. Q: What is the maximum data rate supported by SN74LVC4245APWT? A: SN74LVC4245APWT supports data rates up to 100 Mbps.

  6. Q: Can SN74LVC4245APWT be used for bi-directional communication between microcontrollers and sensors? A: Yes, SN74LVC4245APWT can be used for bi-directional communication between microcontrollers and sensors, especially when they operate at different voltage levels.

  7. Q: Does SN74LVC4245APWT require external pull-up or pull-down resistors? A: No, SN74LVC4245APWT has built-in pull-up and pull-down resistors, eliminating the need for external components in most cases.

  8. Q: Can SN74LVC4245APWT handle high-speed signals? A: Yes, SN74LVC4245APWT is designed to handle high-speed signals and can be used in applications that require fast data transmission.

  9. Q: Is SN74LVC4245APWT suitable for voltage translation in I2C or SPI interfaces? A: Yes, SN74LVC4245APWT is commonly used for voltage translation in I2C or SPI interfaces, allowing communication between devices operating at different voltage levels.

  10. Q: Are there any specific precautions to consider when using SN74LVC4245APWT? A: It is important to ensure that the power supply voltages are within the specified range and that the input and output voltages do not exceed the supply voltage. Additionally, proper decoupling capacitors should be used to minimize noise and ensure stable operation.