TCA4311D

Product Overview

Category

TCA4311D belongs to the category of electronic components.

Use

It is primarily used for bus buffering and level shifting in I2C applications.

Characteristics

• Bus buffering and level shifting capabilities
• Supports bidirectional data transfer
• Compatible with I2C Fast Mode (up to 400 kHz)
• Low standby current consumption
• Robust ESD protection

Package

TCA4311D is available in a small outline package (SOIC) with eight pins.

Essence

The essence of TCA4311D lies in its ability to provide reliable and efficient bus buffering and level shifting for I2C communication.

Packaging/Quantity

TCA4311D is typically sold in reels or tubes, with each reel/tube containing a specific quantity of the component. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply voltage: 1.65V to 5.5V
• Operating temperature range: -40°C to +85°C
• Maximum bus voltage: 6V
• Standby current: 0.5µA (typical)

Detailed Pin Configuration

TCA4311D features the following pin configuration:

1. SDA_IN: Input/output for the serial data line.
2. SCL_IN: Input for the serial clock line.
3. VCC: Supply voltage input.
4. GND: Ground reference.
5. OE: Output enable control input.
6. SDA_OUT: Output for the serial data line.
7. SCL_OUT: Output for the serial clock line.
8. ADDR: Address selection input.

Functional Features

• Bidirectional buffering: TCA4311D allows bidirectional data transfer between two I2C buses, isolating them electrically.
• Level shifting: It provides voltage level shifting between different I2C bus voltages, ensuring compatibility.
• Bus fault detection: TCA4311D can detect bus faults such as stuck bus conditions and excessive bus capacitance.
• Output enable control: The OE pin allows the user to disable the output drivers when necessary.

Advantages and Disadvantages

Advantages

• Enables reliable communication between I2C buses with different voltage levels.
• Protects the I2C bus from excessive capacitance and other bus faults.
• Low standby current consumption helps in power-sensitive applications.
• Robust ESD protection safeguards against electrostatic discharge events.

Disadvantages

• Limited to I2C applications and may not be suitable for other communication protocols.
• Requires careful consideration of voltage levels and bus configurations during implementation.

Working Principles

TCA4311D acts as a buffer and level shifter between two I2C buses. It isolates the buses electrically while allowing bidirectional data transfer. The device monitors the bus for faults and provides output enable control for flexibility. By ensuring proper voltage level translation, it enables seamless communication between I2C buses operating at different voltage levels.

Detailed Application Field Plans

TCA4311D finds application in various scenarios where I2C communication is required, including but not limited to: - Interfacing microcontrollers with I2C peripherals operating at different voltage levels. - Connecting multiple I2C devices with varying voltage requirements on the same bus. - Extending the reach of an I2C bus by buffering and level shifting signals over longer distances.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to TCA4311D are: - PCA9306: A bidirectional I2C bus voltage-level translator with automatic direction sensing. - TXB0108: An eight-channel bidirectional voltage-level translator specifically designed for I2C applications. - BSS138: A general-purpose N-channel MOSFET that can be used for level shifting in I2C circuits.

These alternative models provide options for designers based on specific requirements and constraints.

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