LTC4313CDD-3#TRPBF

Product Overview

Category

The LTC4313CDD-3#TRPBF belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for bus buffering and level shifting in I2C systems.

Characteristics

• The LTC4313CDD-3#TRPBF is a low voltage I2C bus buffer with hot-swappable capability.
• It operates over a wide voltage range, from 1.6V to 5.5V.
• This IC supports bidirectional data transfer between low voltage and high voltage I2C buses.
• It features built-in level shifters that allow seamless communication between different voltage domains.
• The LTC4313CDD-3#TRPBF provides robust protection against bus contention and fault conditions.
• It is available in a small DFN package, which enhances its suitability for space-constrained applications.

Package and Quantity

The LTC4313CDD-3#TRPBF is packaged in a 10-lead DFN (Dual Flat No-Lead) package. It is typically sold in reels or tubes, with a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Maximum Data Rate: 400kHz
• Quiescent Current: 1.5µA (typical)
• Rise/Fall Time: 20ns (maximum)
• ESD Protection: ±8kV (Human Body Model)

Pin Configuration

The LTC4313CDD-3#TRPBF has a total of 10 pins. Here is the detailed pin configuration:

1. SDA_IN: Input/Output for the low voltage I2C data line.
2. SCL_IN: Input for the low voltage I2C clock line.
3. GND: Ground reference.
4. VCC: Power supply input (1.6V to 5.5V).
5. SDA_OUT: Output for the high voltage I2C data line.
6. SCL_OUT: Output for the high voltage I2C clock line.
7. ALERT#: Open-drain output that indicates bus status.
8. EN#: Active-low enable pin for hot-swapping functionality.
9. ADDR0: Address selection bit 0.
10. ADDR1: Address selection bit 1.

Functional Features

• Bidirectional buffering and level shifting between low voltage and high voltage I2C buses.
• Automatic bus arbitration and collision detection.
• Hot-swappable capability allows devices to be added or removed from the bus without disruption.
• Built-in fail-safe features protect against bus contention and fault conditions.
• Supports clock stretching and clock synchronization between different voltage domains.

Advantages and Disadvantages

Advantages

• Seamless integration of low voltage and high voltage I2C buses.
• Robust protection against bus contention and fault conditions.
• Small package size suitable for space-constrained applications.
• Hot-swappable capability simplifies system maintenance and upgrades.

Disadvantages

• Limited to a maximum data rate of 400kHz.
• Requires careful consideration of address selection for multiple devices on the bus.

Working Principles

The LTC4313CDD-3#TRPBF operates by monitoring the bus activity on both the low voltage and high voltage sides. It automatically switches between the two buses, allowing bidirectional communication while maintaining proper voltage levels. The IC also detects and resolves bus contention issues, ensuring reliable data transfer. The hot-swappable feature enables devices to be connected or disconnected from the bus without disrupting the overall system operation.

Detailed Application Field Plans

The LTC4313CDD-3#TRPBF finds applications in various fields, including:

1. Industrial Control Systems: It enables communication between low voltage microcontrollers and high voltage sensors or actuators.
2. Automotive Electronics: The IC facilitates data exchange between different voltage domains in automotive control modules.
3. Consumer Electronics: It allows seamless integration of I2C devices operating at different voltage levels in smartphones, tablets, and other portable devices.
4. Medical Devices: The LTC4313CDD-3#TRPBF ensures reliable communication between low voltage control circuits and high voltage medical sensors or equipment.

Detailed and Complete Alternative Models

1. PCA9306: This IC provides similar bus buffering and level shifting capabilities for I2C systems.
2. TCA9517: It offers bidirectional voltage-level translation for I2C buses with multiple voltage domains.
3. TXB0108: This is a general-purpose bidirectional voltage-level translator suitable for various digital interfaces.

These alternative models can be considered based on specific application requirements and system constraints.

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