MAX3088CSA-T Equivalent & Substitute Parts

Part Overview

The MAX3088CSA-T is a half-duplex RS422/RS485 transceiver IC manufactured by Analog Devices Inc./Maxim Integrated in an 8-SOIC surface mount package. This part is classified as obsolete, with 980 units currently in stock. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, production planning, and long-term component availability. Substitute parts maintain core functional compatibility while offering improved specifications, active product status, and enhanced compliance certifications.

Key Parameters

Parameter	MAX3088CSA-T
Type	Transceiver Half-Duplex
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Receiver Hysteresis	100 mV
Data Rate	10 Mbps
Voltage Supply	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS Non-Compliant

Substitute Part Grouping Explanation

Substitute parts are categorized based on strict parametric alignment with the MAX3088CSA-T. The primary substitution criteria are:

Core Compatibility Parameters:

Protocol: RS422/RS485 half-duplex transceiver
Number of Drivers/Receivers: 1/1 configuration
Package: 8-SOIC form factor
Mounting Type: Surface Mount
Voltage Supply Range: 4.75V ~ 5.25V (or compatible range)
Operating Temperature: 0°C ~ 70°C (or extended range)

Substitution Categories:

Parametric Equivalents (MAX3088CSA+T, MAX3088ECSA+T): Identical electrical specifications and package. These are direct replacements from the same manufacturer with active product status and improved RoHS3 compliance.

Manufacturer Recommended Substitutes (ADM1485JRZ, ADM1485JRZ-REEL, ADM483JRZ, ADM485JRZ variants, ISL83088EIBZ, ISL83088EIBZ-T): Alternative transceiver ICs from Analog Devices and Renesas that maintain the 1/1 half-duplex RS422/RS485 architecture and 8-SOIC package. These parts feature active product status and RoHS3 compliance. Variations in data rate and receiver hysteresis are noted but do not prevent functional substitution within the specified electrical parameters.

Parameter Comparison

Part Number	Manufacturer	Product Status	Protocol	Data Rate	Receiver Hysteresis	Voltage Supply	Operating Temp	RoHS Status	Inventory
MAX3088CSA-T	Analog Devices/Maxim	Obsolete	RS422, RS485	10 Mbps	100 mV	4.75V ~ 5.25V	0°C ~ 70°C	Non-Compliant	980
MAX3088CSA+T	Analog Devices/Maxim	Active	RS422, RS485	10 Mbps	100 mV	4.75V ~ 5.25V	0°C ~ 70°C	RoHS3 Compliant	3090
MAX3088ECSA+T	Analog Devices/Maxim	Active	RS422, RS485	10 Mbps	100 mV	4.75V ~ 5.25V	0°C ~ 70°C	RoHS3 Compliant	2100
ADM1485JRZ	Analog Devices	Active	RS422, RS485	30 Mbps	70 mV	4.75V ~ 5.25V	0°C ~ 70°C	RoHS3 Compliant	16500
ADM1485JRZ-REEL	Analog Devices	Active	RS422, RS485	30 Mbps	70 mV	4.75V ~ 5.25V	0°C ~ 70°C	RoHS3 Compliant	19479
ADM483JRZ	Analog Devices	Active	RS422, RS485	250 kbps	70 mV	4.75V ~ 5.25V	0°C ~ 70°C	RoHS3 Compliant	1410
ADM485JRZ	Analog Devices	Active	RS422, RS485	5 Mbps	70 mV	4.75V ~ 5.25V	0°C ~ 70°C	RoHS3 Compliant	25600
ADM485JRZ-REEL	Analog Devices	Active	RS422, RS485	5 Mbps	70 mV	4.75V ~ 5.25V	0°C ~ 70°C	RoHS3 Compliant	44354
ADM485JRZ-REEL7	Analog Devices	Active	RS422, RS485	5 Mbps	70 mV	4.75V ~ 5.25V	0°C ~ 70°C	RoHS3 Compliant	15953
ISL83088EIBZ	Renesas Electronics	Active	RS422, RS485	10 Mbps	20 mV	4.5V ~ 5.5V	-40°C ~ 85°C	RoHS3 Compliant	1401
ISL83088EIBZ-T	Renesas Electronics	Active	RS422, RS485	10 Mbps	20 mV	4.5V ~ 5.5V	-40°C ~ 85°C	RoHS3 Compliant	4780

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): MAX3088CSA+T and MAX3088ECSA+T are direct parametric equivalents with identical electrical specifications. Both are active products with RoHS3 compliance and superior inventory availability. These are the primary recommendation for obsolete part replacement.

Functional Substitutes with Enhanced Specifications: ADM1485JRZ and ADM1485JRZ-REEL offer higher data rate capability (30 Mbps vs. 10 Mbps) and lower receiver hysteresis (70 mV vs. 100 mV), providing improved signal integrity margins. Both maintain the same voltage supply range and operating temperature window. These are suitable for applications where higher performance is beneficial.

ADM485JRZ variants (ADM485JRZ, ADM485JRZ-REEL, ADM485JRZ-REEL7) operate at 5 Mbps with 70 mV hysteresis. These are appropriate for lower-speed applications and offer the highest inventory levels among Analog Devices substitutes.

ADM483JRZ is rated for 250 kbps operation and is suitable only for low-speed RS422/RS485 applications.

Extended Temperature Range Alternative: ISL83088EIBZ and ISL83088EIBZ-T (Renesas) provide extended operating temperature range (-40°C to 85°C) and wider voltage supply tolerance (4.5V to 5.5V). These are suitable for applications requiring enhanced environmental performance. Receiver hysteresis is 20 mV, providing tighter threshold margins.

Compliance Consideration: All substitute parts carry RoHS3 compliance certification, addressing regulatory requirements that the obsolete MAX3088CSA-T does not meet.

Frequently Asked Questions (FAQ)

Q: Can MAX3088CSA+T directly replace MAX3088CSA-T? A: Yes. MAX3088CSA+T is a parametric equivalent with identical electrical specifications, package, and pin configuration. The primary differences are active product status and RoHS3 compliance.

Q: What is the difference between ADM1485JRZ and ADM485JRZ? A: ADM1485JRZ operates at 30 Mbps with 70 mV receiver hysteresis. ADM485JRZ operates at 5 Mbps with 70 mV receiver hysteresis. Both maintain the same voltage supply and temperature range. Selection depends on required data rate for your application.

Q: Are ISL83088EIBZ and ISL83088EIBZ-T interchangeable? A: ISL83088EIBZ and ISL83088EIBZ-T are functionally equivalent Renesas parts with identical electrical specifications. The primary difference is packaging designation. Both provide extended temperature range (-40°C to 85°C) compared to the MAX3088CSA-T (0°C to 70°C).

Q: Does receiver hysteresis variation affect substitution compatibility? A: Receiver hysteresis affects noise immunity and threshold margins. The MAX3088CSA-T specifies 100 mV hysteresis, while most substitutes provide 70 mV or 20 mV. Lower hysteresis values provide tighter thresholds but may require cleaner signal conditioning in noisy environments. Substitution is valid if your application tolerates the specified hysteresis value.

Q: What packaging options are available for substitutes? A: MAX3088CSA+T and MAX3088ECSA+T are available in Cut Tape (CT) & Digi-Reel® packaging. ADM1485JRZ-REEL and ADM485JRZ variants are supplied in Cut Tape & Digi-Reel® format. ADM1485JRZ, ADM483JRZ, and ISL83088EIBZ are supplied in Tube packaging. ISL83088EIBZ-T packaging is not specified. Verify packaging requirements for your assembly process.

Q: Is the 8-SOIC package identical across all parts? A: Yes. All parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pin configuration and footprint. Surface mount assembly compatibility is maintained across all substitutes.

Q: Why should I choose an active product over the obsolete MAX3088CSA-T? A: Active products ensure long-term availability, ongoing manufacturer support, and compliance with current regulatory standards. The MAX3088CSA-T is obsolete, creating supply chain risk and potential regulatory compliance issues in new designs.

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