ISL33003IRT2Z

Overview

The ISL33003IRT2Z is a dual-channel I2C-compatible bidirectional bus buffer manufactured by Renesas Electronics Corporation. 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 an accelerator trigger threshold of 0.3V with an accelerator current of 10mA. Typical supply current is 2.2µA, while offset voltage is specified at 45mV. It features ±6kV Class 3 HBM ESD protection on all pins and ±12kV on SDA/SCL lines. The component is housed in an 8-lead TDFN package (3.0mm x 3.0mm) with a 0.5mm pitch, designed for surface mount installation across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Provides necessary buffering to extend I2C bus capacitance beyond the 400pF specification limit.
• Integrates rise time accelerator circuitry to reduce passive pull-up resistor power consumption and enhance data rate performance.
• Includes hot-swap capability to prevent damage to data and clock lines during insertion into live backplanes.
• Supports logic level translation for mixed power voltage applications.

Applications

• I2C bus expansion and capacitance buffering
• Server rack isolation for telecommunications, data communication, and computer servers
• Hot-swap circuit board insertion and bus isolation

Procurement Notes

Verify the specific suffix 'T2Z' against official Renesas documentation to confirm tube packaging and lead finish specifications. Confirm end-of-life status and availability through authorized channels, as discontinuation notices may affect long-term sourcing. Ensure compliance with RoHS directives and moisture sensitivity levels prior to procurement.

Selection Notes

Select this component when designing systems requiring I2C bus extension beyond standard capacitance limits or needing hot-swap protection. Verify that the required operating voltage falls between 2.3V and 5.5V. Consider the TDFN-EP-8 package constraints for PCB layout and thermal management compared to MSOP alternatives.

Part Context

This part belongs to the ISL3300x family of I2C bus buffers, which also includes variants like the ISL33002 and ISL33003IUZ. These devices share core functionalities such as rise time acceleration and hot-swap protection but differ in packaging options and specific electrical characteristics defined by their suffixes.

Replacement Considerations

The ISL33002IRT2Z serves as a direct functional substitute within the same series, offering identical buffering capabilities and pinout compatibility. Verify package dimensions and thermal pad requirements to ensure mechanical fit during replacement.