PCA9517DRG4

Product Overview

Category: Integrated Circuit (IC)

Use: Level shifting and translating between different voltage levels in I2C bus applications.

Characteristics: - Bidirectional voltage level translation - Supports I2C Fast Mode Plus (Fm+) with speeds up to 1 MHz - Compatible with both 3.3V and 5V systems - Low standby current consumption - ESD protection for robust operation

Package: SOIC-8

Essence: The PCA9517DRG4 is an IC designed for level shifting and translating signals in I2C bus applications. It allows communication between devices operating at different voltage levels, ensuring compatibility and reliable data transfer.

Packaging/Quantity: The PCA9517DRG4 is typically sold in reels of 250 units.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Standby Current: 10µA (typical)
• Maximum Data Rate: 1 MHz
• Number of Channels: 2

Pin Configuration

The PCA9517DRG4 has a total of 8 pins arranged as follows:

___________ | | 1 | 8 | VCC 2 | 7 | SDA1 3 | 6 | SCL1 4 | 5 | GND |___________|

Functional Features

• Bidirectional voltage level translation between two I2C buses operating at different voltage levels.
• Automatic direction sensing and control.
• Supports I2C Fast Mode Plus (Fm+) with speeds up to 1 MHz.
• Provides ESD protection for robust operation in harsh environments.
• Compatible with both 3.3V and 5V systems, allowing seamless integration into various applications.

Advantages and Disadvantages

Advantages: - Enables communication between devices operating at different voltage levels. - Supports high-speed data transfer up to 1 MHz. - Low standby current consumption helps conserve power. - Provides ESD protection for enhanced reliability.

Disadvantages: - Limited to level shifting and translating within the I2C bus protocol. - Not suitable for applications requiring voltage translation for other communication protocols.

Working Principles

The PCA9517DRG4 utilizes a bidirectional voltage level translator to enable communication between two I2C buses operating at different voltage levels. It automatically senses the direction of data flow and adjusts the voltage levels accordingly. The device ensures compatibility by translating logic high and low levels from one voltage domain to another, allowing seamless data transfer between devices.

Detailed Application Field Plans

The PCA9517DRG4 is commonly used in various applications where level shifting and translating are required in I2C bus communication. Some typical application fields include:

1. Embedded Systems: Used in microcontroller-based systems to interface devices operating at different voltage levels.
2. Industrial Automation: Enables communication between sensors, actuators, and control units with varying voltage requirements.
3. Consumer Electronics: Facilitates interoperability between devices such as smartphones, tablets, and peripherals.
4. Automotive Electronics: Allows communication between different subsystems and modules within a vehicle's electronic system.

Detailed and Complete Alternative Models

1. PCA9306: Similar functionality with a smaller package (SOT23-8).
2. TXB0108: Provides bidirectional level shifting for multiple channels (8 channels) and supports various communication protocols.
3. BSS138: MOSFET-based level shifter suitable for low-voltage applications.

These alternative models offer similar functionality to the PCA9517DRG4 and can be considered based on specific application requirements.

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