ISL33003IUZ

Overview

The ISL33003IUZ 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 transfer rates exceeding 400kHz. The device extends bus capacitance beyond the standard 400pF limit and includes rise time accelerators to improve performance. It features hot swap capability to protect against damage during insertion into live backplanes. The component provides ±6kV Class 3 HBM ESD protection on all pins, with ±12kV HBM protection specifically on SDA and SCL lines. It functions in an industrial temperature range from -40°C to +85°C and is housed in an 8-lead MSOP package.

Feature Summary

• Integrates rise time accelerator circuitry to reduce passive pull-up resistor power consumption while enhancing data rate capabilities.
• Includes dedicated hot swap protection circuits that prevent damage to data and clock lines when devices are inserted into energized systems.
• Provides logic level shifting functionality to support mixed power voltage applications across the operating supply range.

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 'IUZ' corresponds to the MSOP-8 package variant rather than other available options like TDFN. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor catalogs. Ensure the procurement channel is an authorized partner to guarantee authenticity and traceability of the Renesas product.

Selection Notes

Select this component when a single-channel I2C buffer is required for systems needing extended capacitance handling. Choose this part over multi-channel variants if only one bus line requires buffering. Verify that the application environment falls within the specified -40°C to +85°C industrial temperature range and utilizes a supply voltage between 2.3V and 5.5V.

Part Context

The ISL33003 belongs to the ISL3300x family of I2C bus buffers, which also includes the dual-channel ISL33002 and single-channel ISL33001. These devices share common architectural features such as rise time acceleration and hot swap protection. The ISL33003 specifically addresses designs requiring isolation for a single bidirectional I2C interface.

Replacement Considerations

The ISL33001 serves as a functional equivalent within the same series offering single-channel buffering. For applications requiring dual-channel isolation, the ISL33002 is the appropriate alternative. Verify pinout compatibility and package dimensions before substituting any member of the ISL3300x family.