PCA9517DGKR

Product Overview

• Category: Integrated Circuit
• Use: Level shifting and translating between different voltage levels in I2C bus systems
• Characteristics:
  • Bidirectional voltage-level translator for I2C-bus applications
  • Supports I2C Fast Mode Plus (Fm+) with a maximum frequency of 1 MHz
  • Provides bidirectional voltage translation with no direction pin required
  • Allows voltage level translation between 1.0 V and 5.5 V on both sides
  • Features automatic direction sensing and control
• Package: VSSOP-8
• Essence: Voltage-level translator for I2C bus systems
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0 V to 5.5 V
• Operating Temperature Range: -40°C to +85°C
• Maximum Frequency: 1 MHz
• Number of Channels: 2
• Input Low Voltage (VIL): -0.5 V to 0.8 V
• Input High Voltage (VIH): 1.2 V to VDD + 0.5 V
• Output Low Voltage (VOL): 0.4 V max
• Output High Voltage (VOH): VDD - 0.4 V min

Detailed Pin Configuration

The PCA9517DGKR has a VSSOP-8 package with the following pin configuration:

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

Functional Features

• Bidirectional voltage-level translation between different voltage levels in I2C bus systems
• Automatic direction sensing and control eliminates the need for a separate direction pin
• Supports I2C Fast Mode Plus (Fm+) with a maximum frequency of 1 MHz
• Wide supply voltage range allows translation between 1.0 V and 5.5 V on both sides

Advantages and Disadvantages

Advantages: - Simplifies level shifting and translating in I2C bus systems - Supports high-speed communication with I2C Fast Mode Plus - Automatic direction sensing reduces complexity in system design

Disadvantages: - Limited to voltage-level translation within the specified range (1.0 V to 5.5 V) - Only supports bidirectional translation for I2C bus applications

Working Principles

The PCA9517DGKR is designed to facilitate voltage-level translation in I2C bus systems. It automatically senses the direction of data flow and adjusts the voltage levels accordingly. This eliminates the need for an additional direction pin, simplifying the system design.

The device supports I2C Fast Mode Plus (Fm+), allowing for high-speed communication with a maximum frequency of 1 MHz. It can translate voltage levels between 1.0 V and 5.5 V on both sides, making it compatible with a wide range of devices operating at different voltage levels.

Detailed Application Field Plans

The PCA9517DGKR is commonly used in various applications where voltage-level translation is required in I2C bus systems. Some specific application field plans include:

1. Consumer Electronics: Used in smart TVs, set-top boxes, and gaming consoles to enable communication between devices operating at different voltage levels.
2. Industrial Automation: Integrated into industrial control systems to facilitate communication between sensors, actuators, and microcontrollers with varying voltage requirements.
3. Automotive Electronics: Employed in automotive infotainment systems, advanced driver-assistance systems (ADAS), and vehicle diagnostics to enable communication between different components.
4. Internet of Things (IoT): Integrated into IoT devices to bridge the gap between sensors, microcontrollers, and cloud platforms operating at different voltage levels.

Detailed and Complete Alternative Models

1. PCA9306: Bidirectional I2C-bus and SMBus voltage-level translator with automatic direction sensing.
2. TXB0108: 8-bit bidirectional voltage-level translator with automatic direction sensing for various bus systems.
3. SN74LVC4245A: Octal dual-supply translating transceiver with configurable voltage-level shifting capabilities.
4. BSS138: N-channel logic level enhancement mode field-effect transistor (FET) used for voltage-level translation in low-power applications.

These alternative models provide similar functionality and can be considered as substitutes for the PCA9517DGKR depending on specific requirements and constraints.

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