ISL8491EIB

Product Overview

Category

ISL8491EIB belongs to the category of integrated circuits (ICs).

Use

The ISL8491EIB is commonly used as a voltage level translator and bidirectional I2C-bus and SMBus voltage-level translator.

Characteristics

• Voltage level translation between different logic levels
• Bidirectional communication capability
• Supports I2C-bus and SMBus protocols
• Low power consumption
• Wide operating voltage range

Package

The ISL8491EIB is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of ISL8491EIB lies in its ability to facilitate communication between devices operating at different logic levels, ensuring compatibility and seamless data transfer.

Packaging/Quantity

The ISL8491EIB is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Logic Voltage Levels: 1.8V, 2.5V, 3.3V, and 5V
• Maximum Data Rate: 400kHz (Fast Mode)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ISL8491EIB has a total of 8 pins:

1. VCCA: Power supply for the A-side logic.
2. SDA1: Bi-directional data line for the A-side.
3. SCL1: Clock line for the A-side.
4. GND: Ground reference.
5. SCL2: Clock line for the B-side.
6. SDA2: Bi-directional data line for the B-side.
7. VCCB: Power supply for the B-side logic.
8. OE: Output enable pin for disabling the device.

Functional Features

• Bidirectional voltage level translation between two logic levels.
• Automatic direction sensing and control.
• Supports I2C-bus and SMBus protocols.
• Low power consumption in standby mode.
• Robust ESD protection.

Advantages and Disadvantages

Advantages

• Enables seamless communication between devices with different logic levels.
• Wide operating voltage range allows for versatile applications.
• Supports popular communication protocols.
• Compact package size for space-constrained designs.

Disadvantages

• Limited maximum data rate compared to some other voltage level translators.
• Not suitable for applications requiring high-speed data transfer.

Working Principles

The ISL8491EIB utilizes a combination of level-shifting circuitry and automatic direction sensing to facilitate bidirectional voltage level translation. It detects the logic level of the input signal and adjusts the output accordingly, ensuring compatibility between devices operating at different voltage levels.

Detailed Application Field Plans

The ISL8491EIB finds applications in various fields, including but not limited to:

1. Consumer electronics: Facilitating communication between devices with different logic levels, such as smartphones, tablets, and smart home appliances.
2. Industrial automation: Enabling interoperability between industrial sensors, controllers, and communication modules.
3. Automotive electronics: Supporting communication between different components within a vehicle's electronic systems.
4. Internet of Things (IoT): Integrating devices with varying logic levels in IoT networks for seamless data exchange.

Detailed and Complete Alternative Models

1. TXB0108: 8-bit bidirectional voltage-level translator with similar features and performance.
2. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator with automatic direction sensing.
3. SN74LVC4245A: Octal dual-supply translating transceiver with configurable voltage-level shifting.

These alternative models offer similar functionality and can be considered as alternatives to the ISL8491EIB based on specific application requirements.

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