LTC4314CUDC#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: The LTC4314CUDC#TRPBF is a high-speed I2C bus buffer designed to extend the bus capacitance and provide level shifting between two I2C buses operating at different voltage levels. It allows multiple devices with different supply voltages to communicate on the same I2C bus.

Characteristics: - High-Speed I2C Buffer - Level Shifting Capability - Wide Operating Voltage Range - Low Quiescent Current - Small Package Size

Package: The LTC4314CUDC#TRPBF is available in a 10-lead 3mm x 3mm DFN (Dual Flat No-Lead) package.

Essence: The essence of LTC4314CUDC#TRPBF lies in its ability to enable communication between devices operating at different voltage levels on the same I2C bus, while providing buffering and level shifting capabilities.

Packaging/Quantity: The LTC4314CUDC#TRPBF is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Maximum Bus Capacitance: 400pF
• Maximum Clock Frequency: 400kHz
• Quiescent Current: 20μA (typical)
• Rise/Fall Time: 10ns (typical)

Pin Configuration

The LTC4314CUDC#TRPBF has the following pin configuration:

```

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| | --| VCC SDA |-- --| GND SCL |-- --| ADR INT |-- |___________| ```

• VCC: Power supply input
• GND: Ground
• SDA: Serial Data Line
• SCL: Serial Clock Line
• ADR: Address Input
• INT: Interrupt Output

Functional Features

1. Level Shifting: The LTC4314CUDC#TRPBF provides bidirectional level shifting between two I2C buses operating at different voltage levels, allowing devices with different supply voltages to communicate seamlessly.

2. Buffering: It acts as a buffer, isolating the capacitance of one bus from the other, thereby extending the total bus capacitance beyond the limits of a single device.

3. Automatic Bus Releasing: The LTC4314CUDC#TRPBF automatically releases the bus if it detects a stuck bus condition, preventing bus lock-up and ensuring reliable communication.

4. Address Translation: It supports address translation, allowing devices with conflicting addresses to coexist on the same bus.

Advantages and Disadvantages

Advantages: - Enables communication between devices with different supply voltages on the same I2C bus. - Provides buffering and level shifting capabilities. - Supports automatic bus releasing to prevent bus lock-up. - Allows address translation for conflict resolution.

Disadvantages: - Limited to a maximum clock frequency of 400kHz. - Maximum bus capacitance is limited to 400pF.

Working Principles

The LTC4314CUDC#TRPBF works by monitoring the I2C bus lines and automatically adjusting its internal circuitry to match the voltage levels of the connected devices. It uses a combination of level shifters, buffers, and control logic to ensure proper signal translation and isolation between the two buses.

When a device on one bus wants to communicate with a device on the other bus, the LTC4314CUDC#TRPBF facilitates the communication by translating the voltage levels and buffering the signals to ensure reliable data transfer.

Application Field Plans

The LTC4314CUDC#TRPBF finds applications in various fields, including:

1. Industrial Automation: It enables communication between devices operating at different voltage levels in industrial automation systems, allowing seamless integration and control.

2. Consumer Electronics: It is used in consumer electronic devices that require communication between components with different supply voltages, such as smartphones, tablets, and home appliances.

3. Automotive: The LTC4314CUDC#TRPBF is suitable for automotive applications where different subsystems or modules need to communicate on a shared I2C bus.

4. Telecommunications: It can be utilized in telecommunications equipment to enable communication between devices with varying voltage requirements, ensuring compatibility and interoperability.

Alternative Models

1. LTC4311: Similar to LTC4314CUDC#TRPBF, but with a different pin configuration.
2. PCA9306: Provides similar level shifting and buffering capabilities for I2C buses.
3. TCA9517: Offers level shifting