PCA9515AD,118

Product Overview

Category: Integrated Circuit (IC)

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

Characteristics: - Bidirectional voltage level shifting - Supports I2C Fast Mode (up to 400 kHz) and Standard Mode (up to 100 kHz) - Compatible with both 3.3V and 5V systems - Low standby current consumption - ESD protection for robust operation

Package: SOIC-8

Essence: The PCA9515AD,118 is a level shifter IC designed specifically for I2C bus systems, allowing communication between devices operating at different voltage levels.

Packaging/Quantity: The PCA9515AD,118 is available in a standard SOIC-8 package. It is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Logic Voltage Levels: 1.65V to 5.5V
• Maximum Data Rate: 400 kHz (Fast Mode)
• Standby Current: 10 µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The PCA9515AD,118 has an 8-pin SOIC package with the following pin configuration:

___________ | | 1 | NC | 8 VCC 2 | SDA_IN | 7 SCL_OUT 3 | SDA_OUT | 6 SCL_IN 4 | GND | 5 EN |___________|

Functional Features

• Bidirectional voltage level shifting: Allows bidirectional data transfer between devices operating at different voltage levels.
• Automatic direction sensing: The PCA9515AD,118 automatically senses the direction of data flow and adjusts the level shifting accordingly.
• I2C bus buffering: Provides isolation between devices with different supply voltages, preventing any potential damage to sensitive components.
• ESD protection: Built-in electrostatic discharge (ESD) protection ensures reliable operation in harsh environments.

Advantages and Disadvantages

Advantages: - Simple and compact solution for level shifting in I2C bus systems. - Supports both Fast Mode and Standard Mode I2C communication. - Compatible with a wide range of supply voltages. - Low standby current consumption helps conserve power.

Disadvantages: - Limited to level shifting within the specified voltage range. - May introduce slight signal degradation due to voltage translation.

Working Principles

The PCA9515AD,118 utilizes a bidirectional voltage level shifting technique to enable communication between devices operating at different logic levels. It automatically detects the direction of data flow and adjusts the voltage levels accordingly. The IC acts as a buffer, isolating devices with different supply voltages to prevent any potential damage. It also provides ESD protection to ensure reliable operation in challenging environments.

Application Field Plans

The PCA9515AD,118 is widely used in various applications that require level shifting in I2C bus systems. Some common application fields include:

1. Consumer Electronics: Used in smart TVs, set-top boxes, and audio/video equipment to facilitate communication between different voltage level devices.
2. Industrial Automation: Enables communication between sensors, actuators, and control units operating at different logic levels in industrial automation systems.
3. Automotive Electronics: Facilitates communication between various electronic modules in automotive systems, such as infotainment systems, body control modules, and engine management systems.
4. Internet of Things (IoT): Allows connectivity between IoT devices operating at different voltage levels, enabling seamless data exchange.

Alternative Models

1. PCA9306: Similar level shifter IC with a smaller package size (SOT23-5).
2. TXB0108: Bidirectional voltage-level translator with 8 channels.
3. BSS138: MOSFET-based level shifter suitable for low-voltage applications.

These alternative models provide similar functionality and can be considered as alternatives to the PCA9515AD,118 based on specific application requirements.

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