ISL32272EFBZ Equivalent & Substitute Parts

Part Overview

The ISL32272EFBZ is a 4/0 Driver RS422/RS485 interface IC manufactured by Renesas Electronics Corporation in a 16-SOIC package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The ISL32272EFBZ provides four driver channels with no receiver channels, operating across a 3V to 5.5V supply range with a maximum data rate of 10Mbps and temperature range of -40°C to 125°C.

Key Parameters

Parameter	ISL32272EFBZ
Manufacturer	Renesas Electronics Corporation
Type	Driver
Protocol	RS422, RS485
Number of Drivers/Receivers	4/0
Data Rate	10Mbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the ISL32272EFBZ is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 16-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB footprint compatibility.
Functional Configuration: All substitutes must provide 4/0 driver/receiver configuration with RS422/RS485 protocol support.
Electrical Specifications: Supply voltage range, operating temperature range, and data rate capabilities must meet or exceed the application requirements.
Compliance Requirements: RoHS3 compliance is mandatory for all substitutes to maintain regulatory alignment.

The identified substitute parts meet these core substitution criteria while offering active or available product status, addressing the obsolescence of the original ISL32272EFBZ.

Parameter Comparison

Parameter	ISL32272EFBZ	DS26C31TM/NOPB	DS26C31TMX/NOPB	DS26LS31CMX/NOPB	SN75ALS192D	SN75ALS192DR
Manufacturer	Renesas Electronics	Texas Instruments	Texas Instruments	National Semiconductor	Texas Instruments	Texas Instruments
Type	Driver	Driver	Driver	Driver	Driver	Driver
Protocol	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485
Number of Drivers/Receivers	4/0	4/0	4/0	4/0	4/0	4/0
Voltage - Supply	3V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Last Time Buy	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not Specified	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	Not Specified	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compliance)

DS26C31TMX/NOPB and SN75ALS192DR are the preferred substitutes. Both parts maintain active product status, ROHS3 compliance, and superior moisture sensitivity ratings (MSL 1 vs. MSL 3). DS26C31TMX/NOPB offers the highest inventory availability (20,338 pcs) and is available in Cut Tape and Digi-Reel packaging formats, supporting both prototype and production volume requirements.

Secondary Substitutes (Active Status, Temperature Consideration)

DS26C31TM/NOPB and DS26LS31CMX/NOPB provide active product status with ROHS3 compliance. These parts operate within reduced temperature ranges (-40°C to 85°C and 0°C to 70°C respectively) compared to the original ISL32272EFBZ (-40°C to 125°C). Selection of these parts requires confirmation that application operating temperatures remain within their specified limits.

Alternative Substitute (Last Time Buy Status)

SN75ALS192D maintains ROHS3 compliance and MSL 1 rating but carries Last Time Buy status, indicating limited future availability. This part is suitable only for legacy system maintenance where supply continuity is not a primary concern.

Frequently Asked Questions (FAQ)

Q: Can DS26C31TMX/NOPB directly replace ISL32272EFBZ in existing designs?

A: Yes, for applications operating within -40°C to 85°C temperature range. Both parts share identical 16-SOIC package dimensions, 4/0 driver/receiver configuration, and RS422/RS485 protocol support. Verify that your application does not require operation above 85°C, as the ISL32272EFBZ supports up to 125°C.

Q: What is the difference between DS26C31TM/NOPB and DS26C31TMX/NOPB?

A: Both parts are functionally equivalent with identical electrical specifications. The primary difference is packaging format: DS26C31TM/NOPB is supplied in Tube packaging, while DS26C31TMX/NOPB is available in Cut Tape and Digi-Reel formats. DS26C31TMX/NOPB offers significantly higher inventory availability (20,338 pcs vs. 1,525 pcs).

Q: Why do some substitutes have narrower supply voltage ranges?

A: DS26C31 series parts operate at 4.5V to 5.5V, while SN75ALS192 series operates at 4.75V to 5.25V. The ISL32272EFBZ supports the wider 3V to 5.5V range. If your application requires 3V operation, none of the listed substitutes are compatible. Confirm your actual supply voltage requirements before selection.

Q: What does MSL rating mean for component selection?

A: Moisture Sensitivity Level (MSL) indicates how long a component can be exposed to ambient conditions before soldering. MSL 1 (Unlimited) parts like DS26C31TMX/NOPB have no time restrictions and are preferred for manufacturing environments with extended lead times. MSL 3 (168 Hours) parts like ISL32272EFBZ require baking before soldering if storage exceeds 168 hours at specified humidity levels.

Q: Are all substitutes ROHS3 compliant?

A: DS26C31TM/NOPB, DS26C31TMX/NOPB, SN75ALS192D, and SN75ALS192DR are confirmed ROHS3 compliant. DS26LS31CMX/NOPB compliance status is not specified in available documentation. Confirm RoHS compliance requirements with your procurement or quality department before finalizing part selection.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message