LTC4305CGN#PBF

Product Overview

Category

LTC4305CGN#PBF belongs to the category of integrated circuits (ICs) specifically designed for I2C bus applications.

Use

This product is used as a level translator and buffer for I2C bus systems. It provides bidirectional voltage-level translation between low-voltage and high-voltage I2C buses, ensuring compatibility between devices operating at different voltage levels.

Characteristics

• Bidirectional voltage-level translation
• Compatible with I2C and SMBus protocols
• Supports multiple voltage levels (1.8V, 2.5V, 3.3V, 5V)
• Low quiescent current consumption
• High noise immunity
• ESD protection on all pins

Package

LTC4305CGN#PBF is available in a 16-pin SSOP (Shrink Small Outline Package) package.

Essence

The essence of LTC4305CGN#PBF lies in its ability to facilitate communication between devices operating at different voltage levels within an I2C bus system. It ensures reliable data transfer while protecting the devices from potential damage caused by voltage mismatches.

Packaging/Quantity

LTC4305CGN#PBF is typically sold in reels or tubes containing a specified quantity of ICs, usually around 250 units per reel.

Specifications

• Supply Voltage: 1.65V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Maximum Data Rate: 400kHz
• Quiescent Current: 0.6mA (typical)

Detailed Pin Configuration

1. SDA1: Input/Output for low-voltage side I2C data
2. SCL1: Input for low-voltage side I2C clock
3. GND1: Ground for low-voltage side
4. VCC1: Power supply for low-voltage side (1.8V, 2.5V, 3.3V)
5. SDA2: Input/Output for high-voltage side I2C data
6. SCL2: Input for high-voltage side I2C clock
7. GND2: Ground for high-voltage side
8. VCC2: Power supply for high-voltage side (2.5V, 3.3V, 5V)
9. EN: Enable pin to control the translator operation
10. A0: Address selection input bit 0
11. A1: Address selection input bit 1
12. ADD: Address selection input bit 2
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

• Bidirectional voltage-level translation between low-voltage and high-voltage I2C buses
• Automatic direction sensing and control
• Supports multiple voltage levels for flexible system integration
• ESD protection on all pins ensures robustness in harsh environments
• Low quiescent current consumption for power efficiency

Advantages and Disadvantages

Advantages

• Enables seamless communication between devices operating at different voltage levels within an I2C bus system
• Protects devices from potential damage caused by voltage mismatches
• Supports multiple voltage levels for versatile system integration
• High noise immunity ensures reliable data transfer
• ESD protection on all pins enhances durability

Disadvantages

• Limited maximum data rate of 400kHz may not be suitable for high-speed applications
• Requires careful consideration of address selection inputs for proper configuration

Working Principles

LTC4305CGN#PBF operates as a bidirectional voltage-level translator for I2C bus systems. It automatically senses the direction of data flow and adjusts the voltage levels accordingly. When a low-voltage device communicates with a high-voltage device, LTC4305CGN#PBF steps up the voltage levels to match the high-voltage side. Conversely, when a high-voltage device communicates with a low-voltage device, it steps down the voltage levels to match the low-voltage side. This ensures seamless communication between devices operating at different voltage levels while protecting them from potential damage.

Detailed Application Field Plans

LTC4305CGN#PBF finds applications in various fields where I2C bus systems are used. Some of the key application areas include:

1. Consumer Electronics: Enables communication between devices operating at different voltage levels within smartphones, tablets, and other consumer electronic devices.
2. Industrial Automation: Facilitates compatibility between I2C-based sensors, actuators, and controllers operating at different voltage levels in industrial automation systems.
3. Automotive Electronics: Ensures reliable communication between components with varying voltage requirements in automotive electronics, such as infotainment systems and advanced driver