PCA9517D,112

Product Overview

Category: Integrated Circuit (IC)

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

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 - Provides buffering for unidirectional data transfer - Enables longer bus lengths and more devices on the I2C bus

Package: SOIC (Small Outline Integrated Circuit)

Essence: The PCA9517D,112 is an IC designed to facilitate voltage level translation in I2C bus systems, allowing communication between devices operating at different voltage levels.

Packaging/Quantity: The PCA9517D,112 is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 1 MHz
• Number of Channels: 2
• Input Low Voltage (VIL): 0.8V
• Input High Voltage (VIH): 1.8V
• Output Low Voltage (VOL): 0.4V
• Output High Voltage (VOH): VDD - 0.4V

Pin Configuration

The PCA9517D,112 has a total of 8 pins arranged as follows:

___________ SDA |1 8| VCC SCL |2 7| OE# GND |3 6| SDAOUT GND |4 5| SCLIN |__________|

Functional Features

• Bidirectional voltage level translation between two I2C buses operating at different voltage levels.
• Provides buffering for unidirectional data transfer, allowing devices with different voltage requirements to communicate seamlessly.
• Supports I2C Fast Mode Plus (Fm+) with speeds up to 1 MHz.
• Enables longer bus lengths and allows for more devices to be connected on the I2C bus.

Advantages

• Simplifies interfacing between devices operating at different voltage levels in I2C bus systems.
• Eliminates the need for additional level shifting components, reducing system complexity and cost.
• Supports high-speed data transfer up to 1 MHz, enabling faster communication between devices.
• Compatible with both 3.3V and 5V systems, providing flexibility in system design.

Disadvantages

• Limited to bidirectional voltage level translation and does not support other protocols.
• Requires careful consideration of voltage compatibility to avoid potential damage to devices.
• May introduce additional propagation delay in the I2C bus communication.

Working Principles

The PCA9517D,112 utilizes a bidirectional voltage level translator to enable communication between devices operating at different voltage levels in an I2C bus system. It provides buffering for unidirectional data transfer and supports I2C Fast Mode Plus (Fm+) with speeds up to 1 MHz. The device automatically adjusts the voltage levels on the SDA and SCL lines to ensure proper communication between devices.

Application Field Plans

The PCA9517D,112 is commonly used in various applications where voltage level translation is required in I2C bus systems. Some potential application fields include:

1. Consumer Electronics: Used in smart TVs, set-top boxes, and audio/video equipment to facilitate communication between devices operating at different voltage levels.

2. Industrial Automation: Employed in industrial control systems, PLCs (Programmable Logic Controllers), and sensors to enable communication between devices with varying voltage requirements.

3. Automotive Electronics: Integrated into automotive infotainment systems, instrument clusters, and body control modules to support communication between different voltage levels in the I2C bus network.

4. Medical Devices: Utilized in medical equipment such as patient monitors, diagnostic devices, and laboratory instruments to enable communication between devices operating at different voltage levels.

Alternative Models

1. PCA9306: Similar bidirectional I2C bus voltage level translator with automatic direction sensing.
2. TXB0108: Octal bidirectional voltage-level translator with automatic direction sensing.
3. BSS138: General-purpose N-channel MOSFET used for level shifting applications.

These alternative models offer similar functionality and can be considered as substitutes for the PCA9517D,112 depending on specific application requirements.

In conclusion, the PCA9517D,112 is an integrated circuit designed for bidirectional voltage level translation in I2C bus systems. It provides a convenient solution for interfacing devices operating at different voltage levels, enabling seamless communication. With its high-speed capabilities and compatibility with both 3.3V and 5V systems, it finds applications in