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LTC4307CDD-1#PBF
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LTC4307CDD-1#PBF

Product Overview

Category

The LTC4307CDD-1#PBF belongs to the category of integrated circuits (ICs).

Use

This product is commonly used as a level translator and bus buffer for I2C and SMBus systems.

Characteristics

  • The LTC4307CDD-1#PBF is designed to provide bidirectional buffering, voltage level shifting, and capacitive isolation between two I2C buses.
  • It supports standard-mode, fast-mode, and fast-mode plus I2C protocols.
  • The device features high noise immunity and low offset voltage, ensuring reliable data transmission.
  • It operates over a wide supply voltage range, making it suitable for various applications.

Package

The LTC4307CDD-1#PBF is available in a 10-lead DFN (Dual Flat No-Lead) package.

Essence

The essence of this product lies in its ability to facilitate communication between I2C devices operating at different voltage levels.

Packaging/Quantity

The LTC4307CDD-1#PBF is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

  • Supply Voltage Range: 2.7V to 5.5V
  • Operating Temperature Range: -40°C to 85°C
  • Maximum Data Rate: 400kHz
  • Quiescent Current: 0.8mA (typical)
  • Rise/Fall Time: 20ns (maximum)

Detailed Pin Configuration

The LTC4307CDD-1#PBF has the following pin configuration:

  1. SDA1: Input/Output for I2C Bus 1
  2. SCL1: Input for Clock Signal of I2C Bus 1
  3. GND: Ground
  4. SDA2: Input/Output for I2C Bus 2
  5. SCL2: Input for Clock Signal of I2C Bus 2
  6. VCC: Supply Voltage
  7. A1: Address Input Bit 1
  8. A0: Address Input Bit 0
  9. EN: Enable Pin
  10. NC: No Connection

Functional Features

  • Bidirectional buffering and voltage level shifting between two I2C buses.
  • Capacitive isolation to protect against bus capacitance mismatches.
  • Automatic bus collision detection and arbitration.
  • Supports clock stretching and arbitration.

Advantages and Disadvantages

Advantages

  • Enables communication between I2C devices operating at different voltage levels.
  • Provides noise immunity and reliable data transmission.
  • Supports various I2C protocols.
  • Compact package size for space-constrained applications.

Disadvantages

  • Limited to I2C and SMBus systems, not suitable for other bus protocols.
  • Requires careful consideration of bus capacitance and timing constraints.

Working Principles

The LTC4307CDD-1#PBF acts as a bidirectional buffer and voltage level translator between two I2C buses. It monitors the bus lines for activity and ensures proper voltage levels during communication. The device detects bus collisions and resolves them using an arbitration scheme. Capacitive isolation protects against bus capacitance mismatches, ensuring reliable data transmission.

Detailed Application Field Plans

The LTC4307CDD-1#PBF finds application in various scenarios, including:

  1. Interfacing I2C devices operating at different voltage levels.
  2. Level translation between microcontrollers and I2C peripherals.
  3. Communication between multiple I2C buses in complex systems.
  4. Bus buffering and isolation in industrial automation and control systems.
  5. Integration into automotive electronics for I2C-based communication.

Detailed and Complete Alternative Models

  1. LTC4307IDD-1#PBF: Similar to LTC4307CDD-1#PBF, but available in a 10-lead MSOP (Mini Small Outline Package).
  2. PCA9306DCUR: Dual bidirectional I2C bus and SMBus voltage level translator.
  3. TCA9517D: Dual bidirectional I2C bus voltage level translator with automatic direction sensing.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av LTC4307CDD-1#PBF i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of LTC4307CDD-1#PBF in technical solutions:

Q1: What is LTC4307CDD-1#PBF? A1: LTC4307CDD-1#PBF is a multiplexer/demultiplexer IC (integrated circuit) designed for I2C bus applications. It provides bidirectional buffering, voltage level translation, and bus isolation.

Q2: What is the purpose of LTC4307CDD-1#PBF in technical solutions? A2: LTC4307CDD-1#PBF is used to address issues such as bus capacitance, bus contention, and voltage mismatch in I2C bus systems. It helps improve signal integrity and reliability.

Q3: How does LTC4307CDD-1#PBF handle bus capacitance? A3: LTC4307CDD-1#PBF features capacitive isolation on its SDA and SCL pins, which helps reduce the effects of bus capacitance and improves signal integrity.

Q4: Can LTC4307CDD-1#PBF be used for level translation between different voltage domains? A4: Yes, LTC4307CDD-1#PBF supports voltage level translation between two different voltage domains, making it suitable for mixed-voltage systems.

Q5: What is the maximum operating frequency of LTC4307CDD-1#PBF? A5: LTC4307CDD-1#PBF can operate at frequencies up to 400kHz, making it compatible with standard I2C bus speeds.

Q6: Does LTC4307CDD-1#PBF support hot-swapping of devices on the I2C bus? A6: Yes, LTC4307CDD-1#PBF supports hot-swapping, allowing devices to be added or removed from the I2C bus without disrupting the communication.

Q7: Can LTC4307CDD-1#PBF be used in multi-master I2C bus systems? A7: Yes, LTC4307CDD-1#PBF can be used in multi-master systems, where multiple devices can initiate and control I2C communication.

Q8: Does LTC4307CDD-1#PBF have built-in protection features? A8: Yes, LTC4307CDD-1#PBF provides various protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown to safeguard the IC and connected devices.

Q9: What is the power supply voltage range for LTC4307CDD-1#PBF? A9: LTC4307CDD-1#PBF operates with a power supply voltage range of 2.7V to 5.5V, making it compatible with a wide range of systems.

Q10: Are there any evaluation boards or reference designs available for LTC4307CDD-1#PBF? A10: Yes, Linear Technology (now part of Analog Devices) provides evaluation boards and reference designs for LTC4307CDD-1#PBF, which can help users quickly prototype and integrate the IC into their applications.

Please note that the answers provided here are general and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and application notes for detailed information.