PCA9517ATP,147

Product Overview

• Category: Integrated Circuit
• Use: Level Translators
• Characteristics:
  • Bidirectional voltage level translation
  • Supports I2C and SMBus protocols
  • Compatible with 2.5V, 3.3V, and 5V systems
  • Low standby current consumption
• Package: TSSOP-8
• Essence: Voltage level shifting for communication between devices operating at different voltage levels.
• Packaging/Quantity: Tape and Reel, 2500 units per reel.

Specifications

• Supply Voltage: 1.65V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Input High Voltage (VIH): 0.7 x VDD to VDD + 0.5V
• Input Low Voltage (VIL): -0.5V to 0.3 x VDD
• Output High Voltage (VOH): VDD - 0.4V
• Output Low Voltage (VOL): 0.4V

Pin Configuration

The PCA9517ATP,147 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.
• Automatic direction sensing and control.
• Provides bidirectional buffering and level shifting for clock (SCL) and data (SDA) lines.
• Supports I2C and SMBus protocols.
• Low standby current consumption, suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Enables communication between devices operating at different voltage levels. - Automatic direction sensing simplifies system design. - Supports popular I2C and SMBus protocols. - Low power consumption extends battery life.

Disadvantages: - Limited to voltage level translation and does not provide other functionalities. - May introduce additional propagation delay in the communication bus.

Working Principles

The PCA9517ATP,147 is a bidirectional voltage level translator designed for I2C and SMBus applications. It allows communication between devices operating at different voltage levels by providing bidirectional buffering and level shifting for clock (SCL) and data (SDA) lines.

The device automatically senses the direction of the bus and controls the direction of the buffers accordingly. This eliminates the need for additional control signals and simplifies system design. The PCA9517ATP,147 supports voltage translation between 2.5V, 3.3V, and 5V systems.

Application Field Plans

The PCA9517ATP,147 can be used in various applications where voltage level translation is required for I2C or SMBus communication. Some potential application fields include:

1. Consumer Electronics: Enable communication between devices operating at different voltage levels, such as microcontrollers, sensors, and display modules.
2. Industrial Automation: Facilitate communication between industrial control systems and peripheral devices with varying voltage requirements.
3. Automotive Electronics: Support voltage level translation in automotive communication networks, allowing different components to communicate seamlessly.
4. Internet of Things (IoT): Bridge the gap between IoT devices operating at different voltage levels, enabling interoperability and connectivity.

Alternative Models

1. PCA9306DCUR: Similar bidirectional voltage level translator with automatic direction sensing and control.
2. TXB0108PWR: Eight-channel bidirectional voltage level translator with configurable voltage levels.
3. SN74LVC1T45DCKR: Single-bit dual-supply bus transceiver with voltage level translation capabilities.

These alternative models offer similar functionality and can be considered as alternatives to the PCA9517ATP,147 based on specific application requirements.

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