ISL33002IRTZ Equivalent & Substitute Parts

Part Overview

The ISL33002IRTZ is a 2-channel I2C hotswap buffer accelerator manufactured by Renesas Electronics Corporation in an 8-TDFN (3x3) surface mount package. This interface component is designed for 2-wire bus applications with a supply voltage range of 2.3V to 5.5V and operating temperature range of -40°C to 85°C. The part is currently classified as obsolete, making identification of active equivalent and substitute components essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	ISL33002IRTZ
Manufacturer	Renesas Electronics Corporation
Category	Interface
Type	Buffer, Accelerator
Applications	I2C - Hotswap
Number of Channels	2
Input/Output	2-Wire Bus
Capacitance - Input	10 pF
Voltage - Supply	2.3V ~ 5.5V
Current - Supply	3mA
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-WDFN Exposed Pad
Supplier Device Package	8-TDFN (3x3)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the ISL33002IRTZ is determined by the following critical parameters: 2-channel configuration, 2-wire bus input/output, 10 pF input capacitance, supply voltage range compatibility, operating temperature range, surface mount packaging, and I2C hotswap application support.

Substitute parts are grouped into two categories:

Parametric Equivalents (Renesas ISL Series): Parts ISL33001IRT2Z and ISL33001IRTZ maintain identical electrical specifications and package form factors. ISL33002IRT2Z is a direct equivalent with matching supply current (3mA) and identical packaging. These parts are active products with higher inventory availability.

Similar Alternatives (Analog Devices LTC4300 Series): Parts from the LTC4300 family provide equivalent 2-channel I2C hotswap buffering with compatible supply voltage ranges and operating temperatures. These use 8-MSOP packaging instead of 8-TDFN, requiring PCB layout modification. Supply current specifications vary (2.8mA to 5.1mA) and operating temperature ranges differ for some variants.

Parameter Comparison

Part Number	Manufacturer	Type	Channels	Supply Voltage	Supply Current	Operating Temp	Package	Product Status
ISL33002IRTZ	Renesas	Buffer, Accelerator	2	2.3V ~ 5.5V	3mA	-40°C ~ 85°C	8-TDFN (3x3)	Obsolete
ISL33001IRT2Z	Renesas	Buffer, Accelerator	2	2.3V ~ 5.5V	4mA	-40°C ~ 85°C	8-TDFN (3x3)	Active
ISL33001IRTZ	Renesas	Buffer, Accelerator	2	2.3V ~ 5.5V	4mA	-40°C ~ 85°C	8-TDFN (3x3)	Active
ISL33002IRT2Z	Renesas	Buffer, Accelerator	2	2.3V ~ 5.5V	3mA	-40°C ~ 85°C	8-TDFN (3x3)	Active
LTC4300-1CMS8#PBF	Analog Devices	Buffer, Accelerator	2	2.7V ~ 5.5V	2.8mA	0°C ~ 70°C	8-MSOP	Active
LTC4300-1CMS8#TRPBF	Analog Devices	Buffer, Accelerator	2	2.7V ~ 5.5V	2.8mA	0°C ~ 70°C	8-MSOP	Active
LTC4300-1IMS8#PBF	Analog Devices	Buffer, Accelerator	2	2.7V ~ 5.5V	5.1mA	-40°C ~ 85°C	8-MSOP	Active
LTC4300-1IMS8#TRPBF	Analog Devices	Buffer, Accelerator	2	2.7V ~ 5.5V	5.1mA	-40°C ~ 85°C	8-MSOP	Active
LTC4300-2CMS8#PBF	Linear Technology	Buffer, Accelerator	2	2.7V ~ 5.5V	5.1mA	0°C ~ 70°C	8-MSOP	Active
LTC4300-2CMS8#TRPBF	Analog Devices	Buffer, Accelerator	2	2.7V ~ 5.5V	5.1mA	0°C ~ 70°C	8-MSOP	Active
LTC4300-2IMS8#PBF	Analog Devices	Buffer, Accelerator	2	2.7V ~ 5.5V	5.1mA	-40°C ~ 85°C	8-MSOP	Active

Engineering Selection Recommendations

For direct replacement with minimal design modification, ISL33002IRT2Z is the preferred choice. It maintains identical supply current (3mA), package form factor (8-TDFN 3x3), and operating temperature range (-40°C to 85°C). This part is active and ROHS3 compliant with equivalent MSL rating.

ISL33001IRT2Z and ISL33001IRTZ provide active alternatives within the same package family, with slightly elevated supply current (4mA) and identical operating specifications. These parts are suitable where the 1mA current increase is acceptable.

Analog Devices LTC4300 series parts offer functional equivalence for I2C hotswap buffering but require PCB layout redesign due to 8-MSOP packaging. Selection among LTC4300 variants depends on operating temperature requirements: LTC4300-1CMS8#PBF and LTC4300-2CMS8#TRPBF operate at 0°C to 70°C, while LTC4300-1IMS8#PBF and LTC4300-2IMS8#PBF support the full -40°C to 85°C range. All LTC4300 variants are ROHS3 compliant with MSL rating of 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can ISL33001IRTZ directly replace ISL33002IRTZ without PCB modification?

A: Yes. Both parts use identical 8-TDFN (3x3) packaging and pinout. The primary difference is supply current (4mA vs. 3mA), which is acceptable in most applications. Verify power budget constraints in your specific design.

Q: What are the key differences between Renesas ISL and Analog Devices LTC4300 substitutes?

A: Renesas ISL parts maintain the original 8-TDFN package, requiring no PCB layout changes. Analog Devices LTC4300 parts use 8-MSOP packaging, necessitating PCB redesign. Additionally, some LTC4300 variants have restricted operating temperature ranges (0°C to 70°C) compared to the full -40°C to 85°C range of ISL parts.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. Renesas ISL parts carry MSL rating 3 (168 Hours), while Analog Devices LTC4300 parts carry MSL rating 1 (Unlimited), indicating superior moisture resistance.

Q: Which substitute offers the lowest supply current?

A: LTC4300-1CMS8#PBF and LTC4300-1CMS8#TRPBF offer the lowest supply current at 2.8mA. However, these parts operate only at 0°C to 70°C and require package redesign. For the same package form factor, ISL33002IRT2Z maintains the original 3mA specification.

Q: Can I use LTC4300-2CMS8#PBF in applications requiring -40°C operation?

A: No. LTC4300-2CMS8#PBF operates at 0°C to 70°C only. For extended temperature range, use LTC4300-2IMS8#PBF, which supports -40°C to 85°C operation.

Q: What is the minimum supply voltage for each substitute family?

A: Renesas ISL parts support 2.3V minimum supply voltage. Analog Devices LTC4300 parts require minimum 2.7V supply voltage. Verify your system's minimum supply voltage before selection.

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