PCA9515ATP,147

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter and Repeater
• Characteristics: Bidirectional I2C Bus and SMBus Voltage-Level Translator
• Package: TSSOP-8
• Essence: Provides bidirectional voltage-level translation between low-voltage (down to 0.9V) and higher-voltage (up to 5.5V) I2C or SMBus systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 400kHz
• Low Standby Current: 10µA
• ESD Protection: ±4kV HBM, ±500V CDM

Pin Configuration

The PCA9515ATP,147 has a total of 8 pins arranged as follows:

┌───┬───┐ │ 1 │ 2 │ ├───┼───┤ │ 3 │ 4 │ ├───┼───┤ │ 5 │ 6 │ ├───┼───┤ │ 7 │ 8 │ └───┴───┘

Pin Description: 1. OE: Output Enable Input 2. SDA: Serial Data Line 3. VCCB: Bus B Supply Voltage 4. GND: Ground 5. SCL: Serial Clock Line 6. VCCA: Bus A Supply Voltage 7. NC: No Connection 8. NC: No Connection

Functional Features

• Bidirectional voltage-level translation for I2C and SMBus systems
• Allows communication between devices operating at different voltage levels
• Supports level shifting from 0.9V to 5.5V
• Provides buffering and repeater functionality for long-distance communication

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems - Bidirectional translation simplifies interfacing between different voltage domains - Low standby current minimizes power consumption - ESD protection ensures robustness against electrostatic discharge

Disadvantages: - Limited maximum data rate of 400kHz - TSSOP package may require careful handling during assembly

Working Principles

The PCA9515ATP,147 is designed to facilitate communication between I2C or SMBus devices operating at different voltage levels. It utilizes a bidirectional voltage-level translation technique to ensure proper signal transfer between the low-voltage and higher-voltage systems.

The device consists of two independent supply voltage pins (VCCA and VCCB) that allow separate power supplies for each bus. The SDA and SCL lines are connected to both buses through level shifters, enabling bidirectional data transfer. The OE pin controls the output enable function, allowing the user to disable the device when necessary.

Detailed Application Field Plans

The PCA9515ATP,147 finds applications in various scenarios where voltage-level translation is required for I2C or SMBus communication. Some potential application fields include:

1. Mixed-Voltage Systems: Enables communication between microcontrollers, sensors, and other devices operating at different voltage levels.
2. Industrial Automation: Facilitates interconnection between industrial control systems using I2C or SMBus protocols.
3. Consumer Electronics: Allows integration of components with different voltage requirements, such as displays, touch controllers, and audio codecs.
4. Automotive Electronics: Supports communication between different automotive modules, such as infotainment systems, sensors, and control units.

Detailed 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.
3. BSS138: N-channel enhancement mode MOSFET used as a level shifter for I2C and other digital signals.

These alternative models provide similar functionality to the PCA9515ATP,147 and can be considered as alternatives based on specific requirements and constraints.

In conclusion, the PCA9515ATP,147 is an integrated circuit that serves as a bidirectional voltage-level translator for I2C and SMBus systems. Its wide supply voltage range, low standby current, and ESD protection make it suitable for various applications in mixed-voltage environments.