ISL33003IUZ-T

Overview

The ISL33003IUZ-T is a single-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 features an integrated rise time accelerator circuit, which reduces passive pull-up resistor power consumption while enhancing data rate performance. It includes hot-swap capability to protect data and clock lines during insertion into live backplanes. The component provides logic level shifting for mixed-voltage applications and offers ±6kV Class 3 HBM ESD protection on all pins, with ±12kV HBM protection specifically on the SDA and SCL pins. It is housed in an 8-lead MSOP package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated rise time accelerator circuit for improved data rate performance and reduced power consumption
• Hot-swap capability to prevent damage to data and clock lines during board insertion
• Logic level shifting support for mixed power voltage applications
• High electrostatic discharge protection ratings on signal and control pins

Applications

• I2C bus expansion and capacitance buffering beyond standard specifications
• Server rack isolation in telecommunications and data communication systems
• Hot-swappable circuit board insertion scenarios requiring bus protection

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration distinct from tube-packaged variants. Confirm RoHS compliance status through official datasheets as manufacturing processes may evolve. Check for End-of-Life notifications or Product Change Notices regarding moisture sensitivity levels and assembly locations. Ensure compatibility with existing PCB footprints for the MSOP-8 package dimensions.

Selection Notes

Select this component when a single-channel I2C buffer is required for systems operating between 2.3V and 5.5V. It is suitable for designs needing enhanced ESD protection and hot-swap functionality without the complexity of multi-channel buffers. Consider the MSOP-8 package constraints and thermal characteristics relative to the application environment.

Part Context

This part belongs to the ISL3300x series of I2C bus buffers, which also includes dual-channel variants like the ISL33002. The series is designed to extend bus capacitance limits and improve signal integrity in high-speed I2C networks. Renesas acquired Intersil, under which this product line was originally developed, maintaining its position in interface IC solutions.

Replacement Considerations

The ISL33002 serves as a functional alternative if dual-channel buffering is acceptable. Verify pinout compatibility between the single-channel ISL33003 and other family members before substitution.