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TCA9517DGKR
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TCA9517DGKR

Product Overview

Category

TCA9517DGKR belongs to the category of I2C level shifters and buffers.

Use

This product is primarily used for voltage level shifting in I2C bus applications.

Characteristics

  • Provides bidirectional voltage-level translation between low-voltage (LV) and high-voltage (HV) I2C buses
  • Supports I2C Fast Mode, Standard Mode, and High-Speed Mode
  • Compatible with both 2.5V and 3.3V LV systems
  • Allows HV side to operate at any voltage between 1.65V and 5.5V
  • Features a built-in voltage reference for HV-side logic levels
  • Supports hot insertion
  • Low standby current consumption
  • Available in a small package size

Package

The TCA9517DGKR is available in a VSSOP-8 package.

Essence

The essence of TCA9517DGKR lies in its ability to facilitate communication between LV and HV I2C buses by providing voltage level translation.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

  • Supply Voltage Range: 1.65V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • I2C Bus Compatibility: Fast Mode (400kHz), Standard Mode (100kHz), High-Speed Mode (3.4MHz)
  • Standby Current: 10µA (maximum)

Detailed Pin Configuration

The TCA9517DGKR has the following pin configuration:

  1. SDA (Serial Data)
  2. SCL (Serial Clock)
  3. A1 (Address Input 1)
  4. A0 (Address Input 0)
  5. GND (Ground)
  6. OE (Output Enable)
  7. VCC (Supply Voltage)
  8. SDAH (High-Voltage Serial Data)

Functional Features

  • Bidirectional voltage-level translation between LV and HV I2C buses
  • Automatic direction sensing
  • Built-in voltage reference for HV-side logic levels
  • Supports hot insertion and removal of devices on the LV side
  • Low standby current consumption for power efficiency

Advantages and Disadvantages

Advantages

  • Enables seamless communication between LV and HV I2C buses
  • Supports multiple I2C bus speeds
  • Compatible with a wide range of LV and HV supply voltages
  • Small package size allows for space-efficient designs
  • Hot insertion support simplifies system maintenance

Disadvantages

  • Limited to I2C bus applications only
  • May require additional components for specific use cases

Working Principles

The TCA9517DGKR operates by monitoring the voltage levels on both the LV and HV sides of the I2C bus. It automatically detects the direction of data flow and performs the necessary voltage level translation to ensure proper communication between the two sides.

Detailed Application Field Plans

The TCA9517DGKR finds application in various scenarios where voltage level shifting is required in I2C bus communication. Some potential application fields include:

  1. Industrial automation systems
  2. Consumer electronics
  3. Automotive electronics
  4. Medical devices
  5. Internet of Things (IoT) devices

Detailed and Complete Alternative Models

  1. TCA9518DGKR: Similar to TCA9517DGKR, but with additional features such as interrupt output and reset input.
  2. PCA9306DCTR: Another I2C level shifter with bidirectional voltage translation capability.
  3. TXB0108PWR: Provides bidirectional voltage-level translation for multiple signal types, including I2C.

These alternative models offer similar functionality to the TCA9517DGKR and can be considered based on specific requirements.

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技術ソリューションにおける TCA9517DGKR 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 TCA9517DGKR in technical solutions:

  1. Q: What is TCA9517DGKR? A: TCA9517DGKR is a level-shifting I2C bus buffer with hot-swap capability.

  2. Q: What is the purpose of TCA9517DGKR? A: TCA9517DGKR allows bidirectional voltage-level translation between different I2C buses operating at different voltage levels.

  3. Q: What voltage levels does TCA9517DGKR support? A: TCA9517DGKR supports voltage translation between 1.2V and 5.5V.

  4. Q: How many channels does TCA9517DGKR have? A: TCA9517DGKR has two bidirectional channels, allowing translation for two separate I2C buses.

  5. Q: Can TCA9517DGKR be used as a standalone device? A: Yes, TCA9517DGKR can be used as a standalone device or integrated into larger systems.

  6. Q: Does TCA9517DGKR require external power supply? A: Yes, TCA9517DGKR requires an external power supply connected to the VCC pin.

  7. Q: What is the maximum data rate supported by TCA9517DGKR? A: TCA9517DGKR supports I2C data rates up to 400 kHz.

  8. Q: Can TCA9517DGKR handle clock stretching? A: Yes, TCA9517DGKR can handle clock stretching during I2C communication.

  9. Q: Is TCA9517DGKR compatible with other I2C devices? A: Yes, TCA9517DGKR is compatible with all standard I2C devices.

  10. Q: Can TCA9517DGKR be used in automotive applications? A: Yes, TCA9517DGKR is qualified for automotive applications and can operate in harsh environments.

Please note that these answers are general and may vary depending on the specific requirements and use cases.