PCA9515APWT

Product Overview

Category: Integrated Circuit (IC)

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

Characteristics: - Bidirectional voltage level translation - Supports I2C Fast Mode Plus (Fm+) with speeds up to 1 MHz - Compatible with both 2.5V and 3.3V systems - Low standby current consumption - ESD protection for robust operation

Package: TSSOP-8

Essence: The PCA9515APWT is a level shifter IC designed specifically for I2C bus applications, allowing communication between devices operating at different voltage levels.

Packaging/Quantity: The PCA9515APWT is available in tape and reel packaging, with 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
• Standby Current: 10 µA (typical)
• ESD Protection: ±4 kV HBM, ±500 V CDM

Pin Configuration

The PCA9515APWT has a total of 8 pins arranged as follows:

___________ | | 1 | | 8 |___________|

Pin Description: 1. SDAIN: Input/Output for the lower voltage level I2C data line. 2. SCLIN: Input for the lower voltage level I2C clock line. 3. GND: Ground reference. 4. OE: Output enable pin for controlling the direction of voltage translation. 5. SDAOUT: Output for the higher voltage level I2C data line. 6. SCLOUT: Output for the higher voltage level I2C clock line. 7. VCC: Supply voltage pin for the higher voltage level side. 8. VREF: Reference voltage input for level shifting.

Functional Features

• Bidirectional voltage level translation between two different voltage levels in I2C bus applications.
• Automatic direction sensing and control of voltage translation.
• Supports I2C Fast Mode Plus (Fm+) with speeds up to 1 MHz.
• Compatible with both 2.5V and 3.3V systems, allowing seamless integration into various designs.
• Low standby current consumption, ensuring power efficiency.
• ESD protection for robust operation, safeguarding against electrostatic discharge events.

Advantages and Disadvantages

Advantages: - Enables communication between devices operating at different voltage levels. - Supports high-speed data transfer up to 1 MHz. - Wide supply voltage range allows compatibility with multiple systems. - Low standby current consumption helps conserve power. - Provides ESD protection for reliable operation.

Disadvantages: - Limited to I2C bus applications and may not be suitable for other communication protocols. - Only supports bidirectional voltage level translation, not unidirectional.

Working Principles

The PCA9515APWT utilizes a bidirectional voltage level shifting technique to enable communication between devices operating at different voltage levels in I2C bus applications. It automatically senses the direction of data flow and controls the voltage translation accordingly. The device ensures compatibility between 2.5V and 3.3V systems, allowing seamless integration into various designs. Additionally, it provides ESD protection to safeguard against electrostatic discharge events.

Detailed Application Field Plans

The PCA9515APWT is commonly used in various applications that require level shifting and translating in I2C bus communication. Some typical application fields include:

1. Consumer Electronics: Used in smart TVs, set-top boxes, and audio/video equipment for interfacing between different voltage level devices.
2. Industrial Automation: Employed in industrial control systems, PLCs (Programmable Logic Controllers), and sensors to enable communication between devices operating at different voltage levels.
3. Automotive Electronics: Integrated into automotive infotainment systems, instrument clusters, and body control modules for level shifting in I2C bus communication between different components.
4. Internet of Things (IoT): Utilized in IoT devices, such as smart home automation systems and wearable devices, to facilitate communication between devices with varying voltage requirements.

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.
3. BSS138: N-channel enhancement mode MOSFET used for level shifting applications.
4. SN74LVC1T45: Single-bit dual-supply bus transceiver with configurable voltage translation.

These alternative models offer similar functionality and can be considered as alternatives to the PCA9515APWT based on specific application requirements.