ISL32498EIBZ Equivalent & Substitute Parts

Part Overview

The ISL32498EIBZ is a half-duplex RS422/RS485 transceiver manufactured by Renesas Electronics Corporation, housed in an 8-SOIC surface mount package. This interface IC features 1 driver and 1 receiver configuration with a 15 Mbps data rate and 25 mV receiver hysteresis. The part is active in production status and ROHS3 compliant, making it suitable for industrial communication applications requiring reliable serial data transmission over twisted-pair cabling.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design flexibility demands components from different manufacturers that meet identical electrical and mechanical specifications.

Key Parameters

Parameter	ISL32498EIBZ
Manufacturer	Renesas Electronics Corporation
Protocol Support	RS422, RS485
Driver/Receiver Configuration	1/1 Half-Duplex
Data Rate	15 Mbps
Receiver Hysteresis	25 mV
Supply Voltage Range	4.5V – 5.5V
Operating Temperature	-40°C to 85°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the ISL32498EIBZ is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Protocol support: RS422 and RS485 compatibility required
Configuration: 1 driver / 1 receiver half-duplex topology
Package: 8-SOIC form factor with 0.154" (3.90mm) width
Mounting: Surface mount technology
Supply voltage compatibility: Overlap with 4.5V – 5.5V range
Operating temperature range: Minimum -40°C to 85°C coverage
RoHS3 compliance status

Secondary Compatibility Factors:

Data rate: Minimum 15 Mbps required for direct substitution
Receiver hysteresis: 25 mV or higher acceptable
MSL rating: Lower MSL values (1 vs. 3) indicate superior moisture resistance

Parts are grouped by their ability to meet these criteria while maintaining functional equivalence in RS422/RS485 serial communication circuits.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Supply Voltage	Operating Temp	Packaging	MSL Rating
ISL32498EIBZ	Renesas Electronics	15 Mbps	25 mV	4.5V – 5.5V	-40°C to 85°C	Tube	3
ADM1487EARZ	Analog Devices Inc.	2.5 Mbps	70 mV	4.75V – 5.25V	-40°C to 85°C	Tube	1
ADM1487EARZ-REEL7	Analog Devices Inc.	2.5 Mbps	70 mV	4.75V – 5.25V	-40°C to 85°C	Cut Tape & Digi-Reel®	1
ADM487EARZ	Analog Devices Inc.	250 kbps	70 mV	4.75V – 5.25V	-40°C to 85°C	Tube	1
ADM487EARZ-REEL7	Analog Devices Inc.	250 kbps	70 mV	4.75V – 5.25V	-40°C to 85°C	Cut Tape & Digi-Reel®	1
MAX13444EASA+T	Analog Devices Inc./Maxim Integrated	250 kbps	25 mV	4.75V – 5.25V	-40°C to 125°C	Cut Tape & Digi-Reel®	1
MAX13488EESA+T	Analog Devices Inc./Maxim Integrated	16 Mbps	25 mV	4.75V – 5.25V	-40°C to 85°C	Cut Tape & Digi-Reel®	1
MAX3468CSA+	Analog Devices Inc./Maxim Integrated	40 Mbps	50 mV	4.75V – 5.25V	0°C to 70°C	Tube	1
MAX3468CSA+T	Analog Devices Inc./Maxim Integrated	40 Mbps	50 mV	4.75V – 5.25V	0°C to 70°C	Cut Tape & Digi-Reel®	1
MAX3468ESA+	Analog Devices Inc./Maxim Integrated	40 Mbps	50 mV	4.75V – 5.25V	-40°C to 85°C	Tube	1
MAX3468ESA+T	Analog Devices Inc./Maxim Integrated	40 Mbps	50 mV	4.75V – 5.25V	-40°C to 85°C	Tape & Reel	1

Engineering Selection Recommendations

Tier 1 – Direct Substitutes (Highest Compatibility):

MAX13488EESA+T and MAX3468ESA+T represent the closest functional equivalents to the ISL32498EIBZ. Both maintain the 25 mV receiver hysteresis specification, support the full -40°C to 85°C operating range, and exceed the 15 Mbps data rate requirement (16 Mbps and 40 Mbps respectively). Both are ROHS3 compliant with MSL 1 rating, indicating superior moisture resistance compared to the original part. The MAX3468ESA+T offers the highest data rate margin at 40 Mbps, providing additional performance headroom for high-speed serial communication applications.

Tier 2 – Functional Substitutes (Acceptable with Design Review):

MAX13444EASA+T matches the 25 mV hysteresis and extends the operating temperature range to -40°C to 125°C, beneficial for extreme temperature environments. However, its 250 kbps data rate falls significantly below the ISL32498EIBZ specification and is suitable only for low-speed RS485 networks. MAX3468CSA+ and MAX3468CSA+T deliver 40 Mbps performance but operate only from 0°C to 70°C, restricting use in applications requiring full industrial temperature range coverage.

Tier 3 – Limited Substitutes (Application-Specific Only):

ADM1487EARZ and ADM1487EARZ-REEL7 operate at 2.5 Mbps with 70 mV hysteresis, suitable for legacy RS485 systems operating at reduced data rates. ADM487EARZ and ADM487EARZ-REEL7 are restricted to 250 kbps operation and should be considered only for low-bandwidth industrial control applications. All Analog Devices ADM series parts maintain full -40°C to 85°C temperature coverage and ROHS3 compliance.

Packaging Considerations:

Tube packaging (ISL32498EIBZ, ADM1487EARZ, ADM487EARZ, MAX3468ESA+, MAX3468CSA+) suits manual assembly and small-volume production. Cut Tape & Digi-Reel® and Tape & Reel formats (REEL7, +T designations) are optimized for automated pick-and-place assembly and high-volume manufacturing.

Frequently Asked Questions (FAQ)

Q: Can ADM1487EARZ replace ISL32498EIBZ in a 15 Mbps RS485 application?

A: No. The ADM1487EARZ operates at a maximum 2.5 Mbps data rate, which is insufficient for applications requiring 15 Mbps performance. This part is suitable only for low-speed RS485 networks operating below 2.5 Mbps.

Q: What is the difference between MAX3468ESA+ and MAX3468ESA+T?

A: Both parts are electrically identical with 40 Mbps data rate, 50 mV hysteresis, and -40°C to 85°C operating range. The primary difference is packaging format: MAX3468ESA+ is supplied in Tube packaging for manual assembly, while MAX3468ESA+T uses Tape & Reel format for automated manufacturing processes.

Q: Is MAX13444EASA+T suitable for high-speed RS422 applications?

A: No. The MAX13444EASA+T is limited to 250 kbps operation, making it unsuitable for high-speed applications. It is designed for low-bandwidth industrial control and monitoring systems. For high-speed requirements, select MAX13488EESA+T (16 Mbps) or MAX3468ESA+T (40 Mbps).

Q: Why does the ISL32498EIBZ have MSL 3 rating while substitute parts have MSL 1?

A: MSL (Moisture Sensitivity Level) ratings indicate moisture absorption characteristics during storage. MSL 1 (unlimited shelf life) represents superior moisture resistance compared to MSL 3 (168-hour limit). Substitute parts with MSL 1 offer extended storage capability and reduced risk of moisture-induced failures during manufacturing.

Q: Can I use MAX3468CSA+ in a -40°C application?

A: No. The MAX3468CSA+ operates from 0°C to 70°C only and is not rated for -40°C operation. For applications requiring -40°C to 85°C coverage, use MAX3468ESA+ or MAX3468ESA+T instead.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the environmental certification of the ISL32498EIBZ.

Q: What is the minimum data rate requirement for RS485 substitution?

A: The ISL32498EIBZ operates at 15 Mbps. Direct substitutes should support at least 15 Mbps to maintain equivalent performance. Parts with lower data rates (ADM1487EARZ at 2.5 Mbps, ADM487EARZ at 250 kbps) are functional substitutes only for applications operating below their rated speeds.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message