Texas Instruments
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SN74ALVC245RGYR
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SN74ALVC245RGYR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Level Shifter and Bus Transceiver
  • Characteristics: High-speed, low-power, bidirectional voltage-level translator
  • Package: 20-pin VQFN package
  • Essence: Translates signals between different voltage levels in digital systems
  • Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

  • Supply Voltage Range: 1.65V to 3.6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Maximum Data Rate: 400 Mbps
  • Number of Channels: 8
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74ALVC245RGYR has a total of 20 pins, which are as follows:

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

Functional Features

  • Bidirectional voltage-level translation between two different voltage domains
  • Automatic direction control based on the DIR input signal
  • Output enable control using the OE input signal
  • Supports high-speed data transmission up to 400 Mbps
  • Low power consumption for energy-efficient operation
  • ESD protection for enhanced reliability

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - Low power consumption helps in reducing overall system power requirements - Bidirectional functionality simplifies design and reduces component count - ESD protection ensures reliable operation in harsh environments

Disadvantages: - Limited number of channels (8) may not be sufficient for complex systems with a large number of signals - Restricted supply voltage range (1.65V to 3.6V) may not be compatible with all digital systems

Working Principles

The SN74ALVC245RGYR is designed to translate signals between two voltage domains in digital systems. It operates bidirectionally, allowing data to flow from one domain to another and vice versa. The direction of data transfer is controlled by the DIR input signal. When DIR is high, data flows from A-side to B-side, and when DIR is low, data flows from B-side to A-side.

The OE input signal is used to enable or disable the outputs. When OE is low, the outputs are enabled, and when OE is high, the outputs are disabled, effectively isolating the two voltage domains.

The IC utilizes advanced circuitry to ensure high-speed operation while consuming minimal power. It also incorporates ESD protection to safeguard against electrostatic discharge, enhancing its reliability.

Detailed Application Field Plans

The SN74ALVC245RGYR is widely used in various digital systems where voltage-level translation is required. Some of the application fields include:

  1. Microcontrollers and microprocessors
  2. Communication systems
  3. Data acquisition systems
  4. Industrial automation
  5. Automotive electronics
  6. Consumer electronics
  7. Medical devices
  8. Test and measurement equipment

Detailed and Complete Alternative Models

  1. SN74LVC245A: Similar functionality with a wider supply voltage range (1.65V to 5.5V)
  2. SN74LVCH245A: Higher data rate (500 Mbps) with similar characteristics and pin configuration
  3. SN74AVC4T245: 4-channel bidirectional voltage-level translator with a smaller package size (16-pin TSSOP)

These alternative models offer similar features and can be considered based on specific system requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af SN74ALVC245RGYR i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of SN74ALVC245RGYR:

  1. Q: What is SN74ALVC245RGYR? A: SN74ALVC245RGYR is a type of integrated circuit (IC) commonly used as a bidirectional level shifter or voltage translator.

  2. Q: What is the purpose of using SN74ALVC245RGYR in technical solutions? A: SN74ALVC245RGYR is used to interface between two systems operating at different voltage levels, ensuring proper signal translation and communication.

  3. Q: What voltage levels can SN74ALVC245RGYR support? A: SN74ALVC245RGYR supports voltage translation between 1.65V and 5.5V, making it suitable for various applications.

  4. Q: How many channels does SN74ALVC245RGYR have? A: SN74ALVC245RGYR has 8 bidirectional channels, allowing for simultaneous translation of multiple signals.

  5. Q: Can SN74ALVC245RGYR handle high-speed data transmission? A: Yes, SN74ALVC245RGYR is designed to support high-speed data transmission up to 400 Mbps, making it suitable for many modern applications.

  6. Q: Is SN74ALVC245RGYR compatible with both CMOS and TTL logic levels? A: Yes, SN74ALVC245RGYR is compatible with both CMOS and TTL logic levels, providing flexibility in system design.

  7. Q: Does SN74ALVC245RGYR require external power supply decoupling capacitors? A: Yes, it is recommended to use external power supply decoupling capacitors to ensure stable operation and minimize noise.

  8. Q: Can SN74ALVC245RGYR be used in both 3.3V and 5V systems? A: Yes, SN74ALVC245RGYR can be used in both 3.3V and 5V systems, making it versatile for different voltage requirements.

  9. Q: What is the maximum current that SN74ALVC245RGYR can source or sink? A: SN74ALVC245RGYR can source or sink up to 32 mA per channel, allowing it to drive a wide range of loads.

  10. Q: Are there any special considerations when using SN74ALVC245RGYR in multi-board systems? A: Yes, it is important to properly terminate unused inputs and outputs to prevent signal reflections and ensure reliable operation in multi-board systems.

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