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SN74LVC4245ADWRE4
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SN74LVC4245ADWRE4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Level Shifter and Bus Transceiver
  • Characteristics:
    • Bidirectional voltage translation between different logic levels
    • Supports both 3.3V and 5V systems
    • High-speed operation with low power consumption
    • 8-bit wide transceiver with 3-state outputs
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Facilitates communication between devices operating at different voltage levels
  • Packaging/Quantity: Available in reels, 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): 2.4V (min) at IOH = -12mA
    • Low-Level Output Voltage (VOL): 0.4V (max) at IOL = 12mA
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay: 4.3ns (typical)
  • Output Drive Capability: ±24mA

Detailed Pin Configuration

The SN74LVC4245ADWRE4 has a total of 20 pins arranged as follows:

___________ A1 |1 20| VCC A2 |2 19| OE# B1 |3 18| B2 B2 |4 17| A2 B3 |5 16| B3 B4 |6 15| A3 B5 |7 14| B5 GND|8 13| A4 DIR|9 12| B6 A0 |10 11| B7 ‾‾‾‾‾‾‾‾‾‾‾‾‾

Functional Features

  • Bidirectional voltage translation: Allows data transmission between systems operating at different voltage levels.
  • 3-state outputs: Enables multiple devices to share a common bus without interference.
  • Automatic direction control: Determines the direction of data flow based on the DIR pin input.
  • Output enable (OE#) pin: Allows the device to be placed in high-impedance state, disabling the outputs.

Advantages and Disadvantages

Advantages: - Supports bidirectional communication between different voltage domains. - High-speed operation with low power consumption. - Wide supply voltage range allows compatibility with various systems. - 3-state outputs facilitate bus sharing.

Disadvantages: - Limited output drive capability compared to some other models. - May require additional external components for certain applications.

Working Principles

The SN74LVC4245ADWRE4 operates by utilizing a combination of MOSFETs and level-shifting circuitry. It translates logic signals from one voltage level to another, allowing seamless communication between devices operating at different voltages. The automatic direction control feature determines the direction of data flow based on the input provided to the DIR pin. The OE# pin enables or disables the outputs, providing flexibility in controlling the device's behavior.

Detailed Application Field Plans

The SN74LVC4245ADWRE4 finds applications in various fields, including:

  1. Microcontroller Interfacing: Facilitates communication between microcontrollers operating at different voltage levels.
  2. Sensor Networks: Enables data exchange between sensors and microcontrollers with different voltage requirements.
  3. Industrial Automation: Allows integration of devices operating at different logic levels in industrial control systems.
  4. Communication Systems: Supports voltage level translation in communication interfaces like UART, SPI, and I2C.

Detailed and Complete Alternative Models

  1. TXB0108PWR: 8-bit Bidirectional Voltage-Level Translator
  2. PCA9306DCTR: Dual Bidirectional I2C-Bus and SMBus Voltage-Level Translator
  3. SN74LVC245APW: Octal Bus Transceiver with 3-State Outputs
  4. CD4050BE: Hex Non-Inverting Buffer/Converter

These alternative models offer similar functionality and can be considered as alternatives to the SN74LVC4245ADWRE4 based on specific application requirements.

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技術ソリューションにおける SN74LVC4245ADWRE4 の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of SN74LVC4245ADWRE4:

  1. Q: What is SN74LVC4245ADWRE4? A: SN74LVC4245ADWRE4 is a bidirectional voltage-level translator and voltage-level shifter integrated circuit (IC) commonly used in technical solutions.

  2. Q: What is the voltage range supported by SN74LVC4245ADWRE4? A: SN74LVC4245ADWRE4 supports voltage translation from 1.2V to 3.6V on the A-side and 1.65V to 5.5V on the B-side.

  3. Q: How many bidirectional channels does SN74LVC4245ADWRE4 have? A: SN74LVC4245ADWRE4 has 8 bidirectional channels, allowing for simultaneous translation of up to 8 signals.

  4. Q: Can SN74LVC4245ADWRE4 be used for level shifting between different logic families? A: Yes, SN74LVC4245ADWRE4 can be used for level shifting between different logic families, such as translating between CMOS and TTL logic levels.

  5. Q: What is the maximum data rate supported by SN74LVC4245ADWRE4? A: SN74LVC4245ADWRE4 supports data rates up to 100 Mbps, making it suitable for various high-speed communication applications.

  6. Q: Does SN74LVC4245ADWRE4 have built-in ESD protection? A: Yes, SN74LVC4245ADWRE4 features built-in ESD protection, providing robustness against electrostatic discharge events.

  7. Q: Can SN74LVC4245ADWRE4 be used for level shifting between different voltage domains? A: Yes, SN74LVC4245ADWRE4 can be used to translate signals between different voltage domains, enabling communication between devices operating at different voltages.

  8. Q: What is the power supply voltage range for SN74LVC4245ADWRE4? A: SN74LVC4245ADWRE4 operates with a power supply voltage range of 1.65V to 5.5V.

  9. Q: Does SN74LVC4245ADWRE4 support hot-swapping of signals? A: Yes, SN74LVC4245ADWRE4 supports hot-swapping, allowing for safe insertion and removal of signals while the system is powered.

  10. Q: What package options are available for SN74LVC4245ADWRE4? A: SN74LVC4245ADWRE4 is available in various package options, including SOIC, TSSOP, and VQFN, providing flexibility for different PCB layouts and applications.

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