PCA9521DP,118

Product Overview

• Category: Integrated Circuit (IC)
• Use: I2C-bus repeater
• Characteristics:
  • Extends the I2C-bus up to 4000 pF
  • Supports bidirectional data transfer
  • Compatible with I2C-bus standard mode, fast mode, and fast mode plus
  • Low standby current consumption
• Package: TSSOP16
• Essence: The PCA9521DP,118 is a versatile I2C-bus repeater that allows for extending the I2C-bus by buffering and regenerating the signals.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply voltage range: 2.3 V to 5.5 V
• Operating temperature range: -40°C to +85°C
• Maximum clock frequency: 400 kHz
• Standby current: 10 µA (typical)

Detailed Pin Configuration

The PCA9521DP,118 has a total of 16 pins arranged as follows:

```

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| | | 1 2 3 4 | |___________________| | | | 5 6 7 8 | |___________________| | | | 9 10 11 12 | |___________________| | | | 13 14 15 16 | |___________________| ```

Functional Features

• Extends the I2C-bus by buffering and regenerating the signals
• Supports multiple devices on the same bus
• Provides level shifting between different supply voltages
• Allows for long-distance communication on the I2C-bus
• Supports hot insertion and removal of devices on the bus

Advantages and Disadvantages

Advantages: - Enables long-distance communication on the I2C-bus - Compatible with various I2C-bus modes - Low standby current consumption

Disadvantages: - Limited to a maximum clock frequency of 400 kHz - Requires additional external components for proper operation

Working Principles

The PCA9521DP,118 acts as a repeater for the I2C-bus signals. It receives the incoming signals, buffers them, and then regenerates them to ensure proper signal integrity. This allows for extending the I2C-bus beyond its normal limitations and enables communication with devices located at longer distances.

Detailed Application Field Plans

The PCA9521DP,118 is commonly used in applications where long-distance communication on the I2C-bus is required. Some potential application fields include:

1. Industrial automation: The repeater can be used to connect I2C-based sensors and actuators located far from the main control unit.
2. Automotive systems: It can facilitate communication between various modules in a vehicle, such as infotainment systems, climate control units, and sensor arrays.
3. Telecommunications: The repeater can extend the reach of I2C-bus connections in networking equipment, allowing for efficient management and control of multiple devices.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the PCA9521DP,118 are:

1. PCA9515A: A dual bidirectional I2C-bus and SMBus voltage-level translator/repeater.
2. TCA9517: An I2C-bus/SMBus level shifter and repeater with a wide supply voltage range.
3. P82B715: A bipolar IC that provides an interface between two I2C-bus systems operating at different voltage levels.

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

In conclusion, the PCA9521DP,118 is a versatile I2C-bus repeater that extends the communication range of the I2C-bus while ensuring signal integrity. Its compatibility with various I2C-bus modes, low standby current consumption, and support for multiple devices make it suitable for a wide range of applications in different industries.