LTC4307IDD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Level Translator and Buffer

Characteristics: - Bidirectional I2C Bus Buffer - Compatible with I2C Standard Mode, Fast Mode, and Fast Mode Plus - Supports Clock Stretching - Low Voltage Operation (1.65V to 5.5V) - High Noise Margin (0.3V) - Low Quiescent Current (1µA) - Available in DFN-8 Package

Package: DFN-8 (Dual Flat No-Lead)

Essence: The LTC4307IDD#TRPBF is a bidirectional I2C bus buffer designed to provide level translation between different voltage levels in I2C bus systems.

Packaging/Quantity: The LTC4307IDD#TRPBF is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Maximum Data Rate: 400kHz
• Quiescent Current: 1µA (typical)
• Input High Voltage: 0.7 x Vcc
• Input Low Voltage: 0.3 x Vcc
• Output High Voltage: Vcc - 0.4V
• Output Low Voltage: 0.4V

Detailed Pin Configuration

The LTC4307IDD#TRPBF has the following pin configuration:

1. SDA1: I2C Bus 1 Serial Data Line
2. SCL1: I2C Bus 1 Serial Clock Line
3. EN: Enable Pin
4. SDA2: I2C Bus 2 Serial Data Line
5. SCL2: I2C Bus 2 Serial Clock Line
6. GND: Ground
7. Vcc: Supply Voltage
8. NC: No Connection

Functional Features

• Bidirectional level translation between two I2C buses operating at different voltage levels.
• Compatible with standard mode, fast mode, and fast mode plus I2C protocols.
• Supports clock stretching to ensure proper communication timing.
• Provides high noise margin for reliable operation in noisy environments.
• Low quiescent current minimizes power consumption.
• Enables multiple devices with different voltage requirements to communicate on the same I2C bus.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - High noise margin ensures reliable operation in challenging environments. - Low quiescent current minimizes power consumption. - Supports clock stretching for accurate communication timing.

Disadvantages: - Limited to I2C bus applications and may not be suitable for other communication protocols. - Maximum data rate of 400kHz may not meet the requirements of high-speed applications.

Working Principles

The LTC4307IDD#TRPBF acts as a bidirectional buffer between two I2C buses operating at different voltage levels. It translates the logic levels of the serial data (SDA) and serial clock (SCL) lines from one bus to the other, allowing devices with different voltage requirements to communicate seamlessly.

The device monitors the SDA and SCL lines of both buses and controls the direction of data flow based on the logic levels detected. It also supports clock stretching, which allows slower devices to hold the clock line low to extend the communication time.

Detailed Application Field Plans

The LTC4307IDD#TRPBF is commonly used in various applications where level translation is required in I2C bus systems. Some typical application fields include:

1. Industrial Control Systems: The LTC4307IDD#TRPBF enables communication between I2C devices operating at different voltage levels in industrial control systems, such as PLCs and automation equipment.

2. Consumer Electronics: It is used in consumer electronic devices that utilize I2C communication, such as smartphones, tablets, and smart home devices, to enable compatibility between devices with varying voltage requirements.

3. Automotive Systems: The LTC4307IDD#TRPBF finds application in automotive systems where different components need to communicate over an I2C bus, such as infotainment systems, climate control modules, and sensor networks.

4. Medical Devices: It is utilized in medical devices that rely on I2C communication, including patient monitoring systems, diagnostic equipment, and laboratory instruments, to ensure seamless data exchange between devices.

Detailed and Complete Alternative Models

1. PCA9306: Bidirectional I2C Bus Voltage-Level Translator
   • Category: Integrated Circuit (IC)
   • Use: Level Translator and Buffer
   • Characteristics: Bidirectional translation, compatible with I2C standard mode and fast mode, low voltage operation, available in various packages.
   • Manufacturer: N