ISL33003IRTZ

Overview

The ISL33003IRTZ is a dual-channel I2C bus buffer manufactured by Renesas Electronics. It operates within a supply voltage range of +2.3V to +5.5V and supports data rates exceeding 400kHz. The device extends bus capacitance beyond the standard 400pF limit and includes rise time accelerators to reduce passive pull-up resistor power consumption. It features hot-swap capability to protect data and clock lines during insertion into live backplanes. The component provides ±6kV Class 3 HBM ESD protection on all pins, with ±12kV HBM protection specifically on SDA/SCL pins. It operates between -40°C and +85°C in an 8-pin TDFN-EP package.

Feature Summary

• Dual-channel bidirectional buffering for I2C compatible buses
• Integrated rise time accelerator circuitry for improved performance
• Hot-swap protection prevents line damage during board insertion
• Logic level shifting capability for mixed voltage applications

Applications

• I2C bus expansion and capacitance buffering
• Server rack isolation in telecommunications and data communication systems
• Desktop computer peripheral interfaces
• Hot-swap circuit board insertion and bus isolation

Procurement Notes

Verify authenticity through authorized distributors or direct manufacturer channels due to discontinuation status. Request original packaging seals and batch codes matching official documentation. Inspect for physical defects and confirm RoHS compliance certificates are current. Validate part markings against the datasheet pinout and package dimensions to prevent counterfeit substitution.

Selection Notes

Select this component when extending I2C bus capacitance beyond standard limits while maintaining high-speed data integrity. The integrated rise time accelerator reduces power dissipation in passive pull-up networks. Ensure the application requires dual-channel buffering and hot-swap protection for safe insertion into powered systems. Verify that the operating temperature range and supply voltage align with system requirements.

Part Context

The ISL33003IRTZ belongs to the ISL3300x family of I2C bus buffers, which also includes the ISL33001 and ISL33002 variants. These devices share common functional characteristics such as rise time acceleration and hot-swap capabilities. The specific suffix indicates an 8-pin TDFN package with industrial temperature rating. This series addresses the need for robust signal conditioning in complex multi-drop I2C environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.