LTC4311ISC6

Product Overview

Category

LTC4311ISC6 belongs to the category of integrated circuits (ICs).

Use

The LTC4311ISC6 is commonly used as a level translator and hot-swappable I2C bus buffer. It allows multiple devices with different supply voltages to communicate on the same I2C bus.

Characteristics

• Level translation: The LTC4311ISC6 provides bidirectional voltage level translation between two I2C buses operating at different voltage levels.
• Hot-swappability: It supports hot-swapping of I2C devices without disrupting the bus communication.
• Low voltage operation: It can operate at low supply voltages, making it suitable for battery-powered applications.
• High noise immunity: The LTC4311ISC6 features high noise immunity, ensuring reliable data transfer in noisy environments.

Package

LTC4311ISC6 is available in a small SOT-23-6 package.

Essence

The essence of LTC4311ISC6 lies in its ability to enable communication between I2C devices operating at different voltage levels while providing hot-swappability and noise immunity.

Packaging/Quantity

LTC4311ISC6 is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• I2C Bus Voltage Range: 1.6V to 5.5V
• Maximum Data Rate: 400kHz
• Quiescent Current: 10μA (typical)

Detailed Pin Configuration

The LTC4311ISC6 has six pins arranged as follows:

```

---

| | --| A0 VCC |-- --| A1 SDA |-- --| A2 SCL |-- --| GND FLT |-- |___________| ```

• A0, A1, A2: Address pins for device configuration.
• VCC: Supply voltage pin.
• SDA: Serial data line for I2C communication.
• SCL: Serial clock line for I2C communication.
• GND: Ground connection.
• FLT: Fault output pin indicating bus errors.

Functional Features

1. Level Translation: The LTC4311ISC6 translates the voltage levels between two I2C buses, allowing devices with different supply voltages to communicate seamlessly.
2. Hot-Swappability: It supports hot-swapping of I2C devices without interrupting the bus communication, ensuring continuous operation.
3. Noise Immunity: The LTC4311ISC6 provides high noise immunity, minimizing the impact of external disturbances on the I2C bus communication.
4. Low Power Consumption: With a quiescent current of only 10μA, it is suitable for power-sensitive applications.

Advantages and Disadvantages

Advantages

• Enables communication between I2C devices operating at different voltage levels.
• Supports hot-swapping of I2C devices.
• Provides high noise immunity for reliable data transfer.
• Low power consumption makes it suitable for battery-powered applications.

Disadvantages

• Limited to I2C bus communication and not compatible with other bus protocols.
• Requires proper configuration of address pins for correct operation.

Working Principles

The LTC4311ISC6 acts as a bidirectional buffer between two I2C buses operating at different voltage levels. It uses level translation circuitry to convert the logic levels of the signals between the two buses. When an I2C device connected to one bus wants to communicate with a device on the other bus, the LTC4311ISC6 facilitates the translation of voltage levels, ensuring proper communication.

The device also incorporates hot-swappability, allowing I2C devices to be connected or disconnected from the bus without interrupting the ongoing communication. This feature is particularly useful in applications where devices need to be added or removed dynamically.

Detailed Application Field Plans

The LTC4311ISC6 finds applications in various fields, including:

1. Industrial Automation: It enables communication between I2C devices operating at different voltage levels in industrial automation systems.
2. Consumer Electronics: It allows seamless integration of I2C devices with different supply voltages in consumer electronic products.
3. Automotive Systems: The LTC4311ISC6 facilitates communication between I2C devices in automotive systems, where different voltage levels may be present.
4. Medical Devices: It enables reliable data transfer between I2C devices used in medical devices, ensuring accurate and timely information exchange.

Detailed and Complete Alternative Models

1. LTC4310: Similar to LTC4311ISC6, but available in a different package (DFN-8).
2. PCA9306: Another I2C level translator with similar functionality, offered