ISL32274EIVZ Equivalent & Substitute Parts

Part Overview

The ISL32274EIVZ is a 4/0 RS422/RS485 driver interface IC manufactured by Renesas Electronics Corporation in a 16-TSSOP surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute parts for new designs and production continuity. The ISL32274EIVZ operates across a 3V to 5.5V supply range with a maximum data rate of 10Mbps and supports industrial temperature ranges from -40°C to 85°C.

Key Parameters

Parameter	ISL32274EIVZ
Manufacturer	Renesas Electronics Corporation
Product Status	Obsolete
Type	Driver
Protocol	RS422, RS485
Number of Drivers/Receivers	4/0
Data Rate	10Mbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution of the ISL32274EIVZ is determined by strict alignment of the following electrical and mechanical parameters:

Critical Compatibility Parameters:

Protocol: RS422/RS485 interface standard
Number of Drivers/Receivers: 4/0 configuration
Package / Case: 16-TSSOP form factor with 0.173" width and 4.40mm width specification
Mounting Type: Surface Mount
Voltage - Supply Range: Must encompass or be compatible with 3V to 5.5V operation

Allowable Variation Parameters:

Data Rate: Substitute parts may exceed the 10Mbps specification of the original part
Operating Temperature: Substitute parts may offer extended or narrower temperature ranges
Product Status: Active parts are preferred over obsolete status
Packaging Format: Tube, Tape & Reel, or Cut Tape formats are interchangeable for the same part number

Substitute parts are grouped by manufacturer and base product number. Within each group, packaging and temperature variants are listed separately to allow selection based on specific procurement and application requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Package	Packaging Format
ISL32274EIVZ	Renesas	Obsolete	RS422, RS485	4/0	10Mbps	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	—
ISL32172EFVZ	Renesas	Active	RS422, RS485	4/0	32Mbps	3V ~ 5.5V	-40°C ~ 125°C	16-TSSOP	Tube
MAX3032ECUE+	Analog Devices Inc./Maxim Integrated	Active	RS422, RS485	4/0	20Mbps	3V ~ 3.6V	0°C ~ 70°C	16-TSSOP	Tube
MAX3032ECUE+T	Analog Devices Inc./Maxim Integrated	Active	RS422, RS485	4/0	20Mbps	3V ~ 3.6V	0°C ~ 70°C	16-TSSOP	Tape & Reel (TR)
MAX3032EEUE+	Analog Devices Inc./Maxim Integrated	Active	RS422, RS485	4/0	20Mbps	3V ~ 3.6V	-40°C ~ 85°C	16-TSSOP	Tube
MAX3032EEUE+T	Analog Devices Inc./Maxim Integrated	Active	RS422, RS485	4/0	20Mbps	3V ~ 3.6V	-40°C ~ 85°C	16-TSSOP	Cut Tape (CT) & Digi-Reel®
MAX3033ECUE+	Analog Devices Inc./Maxim Integrated	Active	RS422, RS485	4/0	2Mbps	3V ~ 3.6V	0°C ~ 70°C	16-TSSOP	Tube
MAX3033ECUE+T	Analog Devices Inc./Maxim Integrated	Active	RS422, RS485	4/0	2Mbps	3V ~ 3.6V	0°C ~ 70°C	16-TSSOP	Tape & Reel (TR)
MAX3033EEUE+	Analog Devices Inc./Maxim Integrated	Active	RS422, RS485	4/0	2Mbps	3V ~ 3.6V	-40°C ~ 85°C	16-TSSOP	Tube
MAX3033EEUE+T	Analog Devices Inc./Maxim Integrated	Active	RS422, RS485	4/0	2Mbps	3V ~ 3.6V	-40°C ~ 85°C	16-TSSOP	Tape & Reel (TR)

Engineering Selection Recommendations

Renesas ISL32172EFVZ is the direct Renesas equivalent. This part maintains the same manufacturer lineage, supports the full 3V to 5.5V supply range of the original ISL32274EIVZ, and extends the operating temperature range to -40°C to 125°C. The ISL32172EFVZ is active and available in Tube packaging with higher data rate capability (32Mbps).

Analog Devices MAX3032 Series (MAX3032EEUE+, MAX3032EEUE+T, MAX3032ECUE+, MAX3032ECUE+T) provides cross-manufacturer substitution with active product status. The MAX3032EEUE+ and MAX3032EEUE+T variants support the -40°C to 85°C temperature range matching the original part. Supply voltage is limited to 3V to 3.6V, which is a subset of the ISL32274EIVZ range. Data rate is 20Mbps. These parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity.

Analog Devices MAX3033 Series (MAX3033EEUE+, MAX3033EEUE+T, MAX3033ECUE+, MAX3033ECUE+T, MAX3033EEUE+) offers the lowest data rate at 2Mbps. The MAX3033EEUE+ and MAX3033EEUE+T variants support -40°C to 85°C operation. Supply voltage is 3V to 3.6V. These parts are suitable for lower-speed RS422/RS485 applications.

All substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original ISL32274EIVZ.

Frequently Asked Questions (FAQ)

Q: Can MAX3032 or MAX3033 parts replace ISL32274EIVZ in designs requiring 5V operation?

A: No. The MAX3032 and MAX3033 series are specified for 3V to 3.6V supply voltage only. The ISL32274EIVZ supports 3V to 5.5V. If the application requires 5V operation, the ISL32172EFVZ from Renesas is the appropriate substitute, as it maintains the full 3V to 5.5V supply range.

Q: What is the difference between MAX3032ECUE+ and MAX3032EEUE+ variants?

A: Both are identical in electrical specifications (20Mbps data rate, 3V to 3.6V supply). The difference is in operating temperature range and packaging format. MAX3032ECUE+ operates 0°C to 70°C in Tube packaging. MAX3032EEUE+ operates -40°C to 85°C in Tube packaging. MAX3032EEUE+T is the same as MAX3032EEUE+ but in Cut Tape & Digi-Reel® format. MAX3032ECUE+T is the same as MAX3032ECUE+ but in Tape & Reel format.

Q: Are packaging format differences (Tube, Tape & Reel, Cut Tape) electrically significant?

A: No. Packaging format differences (Tube, Tape & Reel, Cut Tape & Digi-Reel®) are procurement and handling considerations only. The electrical and mechanical specifications of the IC remain identical. Selection should be based on assembly line requirements and inventory management practices.

Q: Why does ISL32172EFVZ have a higher data rate (32Mbps) than the original ISL32274EIVZ (10Mbps)?

A: The ISL32172EFVZ is a higher-performance variant within the Renesas RS422/RS485 driver family. Higher data rate capability does not prevent substitution; it indicates enhanced performance. Applications operating at 10Mbps or below will function correctly with the ISL32172EFVZ.

Q: Which substitute part has the best availability?

A: MAX3032EEUE+ has the highest inventory at 26,120 pieces. ISL32172EFVZ has 2,200 pieces. MAX3032ECUE+T has 5,144 pieces. Inventory levels should be confirmed with the supplier for current availability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original ISL32274EIVZ.

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