LTC4304IMS#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Bus Buffer
• Characteristics:
  • I2C and SMBus Compatible
  • Low Voltage Operation (1.5V to 5.5V)
  • High Noise Immunity
  • Small Package Size
• Package: MSOP-10
• Essence: LTC4304IMS#TRPBF is a bus buffer IC designed for I2C and SMBus applications, providing level shifting and buffering capabilities.
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.5V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Maximum Data Rate: 400kHz
• Quiescent Current: 0.8μA (typical)
• Rise/Fall Time: 20ns (maximum)
• Input Capacitance: 3pF (typical)

Pin Configuration

The LTC4304IMS#TRPBF has the following pin configuration:

```

---

| | --| A1 Vcc|-- --| A0 SDA |-- --| GND SCL |-- --| OE FLT |-- --| B1 INT |-- --| B0 V+ |-- --| Y YB |-- --| X YA |-- |___________| ```

Functional Features

• Level Shifting: The LTC4304IMS#TRPBF provides bidirectional level shifting between low voltage and high voltage I2C/SMBus signals.
• Bus Buffering: It acts as a buffer, isolating the capacitance of one segment of the bus from the rest, improving signal integrity and reducing bus loading.
• Automatic Bus Disconnect: The IC automatically disconnects the input and output sides when the bus is idle, preventing contention and reducing power consumption.

Advantages

• Compatibility: It is fully compatible with I2C and SMBus protocols, making it suitable for a wide range of applications.
• Low Voltage Operation: The IC can operate at low voltages, allowing it to be used in battery-powered devices.
• High Noise Immunity: It provides excellent noise immunity, ensuring reliable communication even in noisy environments.
• Small Package Size: The MSOP-10 package offers a compact footprint, saving board space.

Disadvantages

• Limited Data Rate: The maximum data rate supported by LTC4304IMS#TRPBF is 400kHz, which may not be sufficient for high-speed applications.
• Single Buffer: It can only buffer one segment of the bus, limiting its use in complex bus topologies.

Working Principles

The LTC4304IMS#TRPBF operates by monitoring the bus activity and automatically disconnecting the input and output sides when the bus is idle. This prevents contention and reduces power consumption. It also provides level shifting between low voltage and high voltage signals, allowing devices operating at different voltage levels to communicate on the same bus.

Application Field Plans

The LTC4304IMS#TRPBF is commonly used in various applications, including:

1. Consumer Electronics: Used in TVs, set-top boxes, and audio systems for I2C/SMBus communication between different components.
2. Industrial Automation: Enables communication between sensors, actuators, and control units in industrial automation systems.
3. Automotive: Facilitates communication between different modules in automotive systems, such as infotainment, climate control, and lighting.
4. Medical Devices: Used in medical equipment for communication between various modules and sensors.
5. IoT Devices: Enables communication between different IoT devices, allowing them to exchange data and commands.

Alternative Models

• LTC4304IMS: Similar to LTC4304IMS#TRPBF, but without tape & reel packaging.
• LTC4304CMS: Offers the same functionality in a smaller MSOP-8 package.
• PCA9515ADP: An alternative IC with similar features from a different manufacturer.

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