SP3086EEN-L Equivalent & Substitute Parts

Part Overview

The SP3086EEN-L is a full-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in a 14-SOIC surface mount package. This component operates across a 4.5V to 5.5V supply range with a 20 Mbps data rate and 100 mV receiver hysteresis, supporting industrial communication protocols in embedded systems and industrial automation applications.

The SP3086EEN-L is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support long-term product support for systems currently deployed with this component.

Key Parameters

Parameter	SP3086EEN-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Full
Data Rate	20 Mbps
Receiver Hysteresis	100 mV
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the SP3086EEN-L is determined by the following critical parameters:

Protocol compatibility: RS422 and RS485 support
Electrical interface: 1/1 driver/receiver configuration with full-duplex operation
Supply voltage range: 4.5V to 5.5V
Package type: 14-SOIC surface mount form factor
Thermal operating range: Minimum -40°C to 85°C coverage

Substitute parts are grouped into two categories:

Primary Substitutes (14-SOIC Package, Full-Duplex, Matching Electrical Specifications): Parts that maintain identical package geometry, duplex mode, and core electrical parameters. These include MAX13086EESD+, MAX13089EASD+, MAX13089EASD+T, and ISL83086EIBZ variants.

Secondary Substitutes (Alternative Packages or Extended Functionality): Parts that support RS422/RS485 protocols with 1/1 transceiver configuration but may feature different package types (SOT-23-8, 28-DIP) or extended duplex capabilities (full/half). These include MAX13086ECSD+ and MAX13089ECSD+.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Duplex	Data Rate	Receiver Hysteresis	Supply Voltage	Operating Temp	Package	Product Status
SP3086EEN-L	MaxLinear, Inc.	RS422, RS485	1/1	Full	20 Mbps	100 mV	4.5V ~ 5.5V	-40°C ~ 85°C	14-SOIC	Obsolete
ISL83086EIBZ	Renesas Electronics	RS422, RS485	1/1	Full	10 Mbps	20 mV	4.5V ~ 5.5V	-40°C ~ 85°C	14-SOIC	Active
ISL83086EIBZ-T	Renesas Electronics	RS422, RS485	1/1	Full	10 Mbps	20 mV	4.5V ~ 5.5V	-40°C ~ 85°C	14-SOIC	Active
MAX13086EASD+	Analog Devices Inc./Maxim	RS422, RS485	1/1	Full	16 Mbps	100 mV	4.5V ~ 5.5V	-40°C ~ 125°C	14-SOIC	Active
MAX13086ECSD+	Analog Devices Inc./Maxim	RS422, RS485	1/1	Full	16 Mbps	15 mV	4.5V ~ 5.5V	0°C ~ 70°C	SOT-23-8	Active
MAX13086EESD+	Analog Devices Inc./Maxim	RS422, RS485	1/1	Full	16 Mbps	100 mV	4.5V ~ 5.5V	-40°C ~ 85°C	14-SOIC	Active
MAX13089EASD+	Analog Devices Inc./Maxim	RS422, RS485	1/1	Full	16 Mbps	100 mV	4.5V ~ 5.5V	-40°C ~ 125°C	14-SOIC	Active
MAX13089EASD+T	Analog Devices Inc./Maxim	RS422, RS485	1/1	Full	16 Mbps	100 mV	4.5V ~ 5.5V	-40°C ~ 125°C	14-SOIC	Active
MAX13089ECSD+	Analog Devices Inc./Maxim	RS422, RS485	1/1	Full, Half	16 Mbps	100 mV	4.5V ~ 5.5V	0°C ~ 70°C	28-DIP	Active
MAX13089EESD+	Analog Devices Inc./Maxim	RS422, RS485	1/1	Full, Half	16 Mbps	100 mV	4.5V ~ 5.5V	-40°C ~ 85°C	14-SOIC	Active
MAX13089EESD+T	Analog Devices Inc./Maxim	RS422, RS485	1/1	Full, Half	250 kbps	15 mV	4.5V ~ 5.5V	-40°C ~ 85°C	14-SOIC	Active

Engineering Selection Recommendations

Recommended Primary Substitutes for Direct Replacement:

MAX13086EESD+ and MAX13089EASD+ are the preferred substitutes for the SP3086EEN-L. Both maintain the 14-SOIC package, full-duplex operation, 100 mV receiver hysteresis, and -40°C to 85°C operating temperature range. These parts are manufactured by Analog Devices Inc./Maxim Integrated and carry active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The MAX13089EASD+ extends the upper operating temperature to 125°C, providing enhanced thermal margin for industrial applications.

Alternative Substitutes with Packaging Considerations:

ISL83086EIBZ and ISL83086EIBZ-T (Renesas Electronics) maintain 14-SOIC packaging and full-duplex RS422/RS485 operation with active product status. These parts operate within the required -40°C to 85°C range and support the 4.5V to 5.5V supply voltage. However, the 10 Mbps data rate is lower than the original 20 Mbps specification, and the 20 mV receiver hysteresis differs from the 100 mV baseline. These parts are suitable for applications where data rate requirements do not exceed 10 Mbps.

Secondary Substitutes for Non-Standard Configurations:

MAX13086ECSD+ is available in SOT-23-8 package for space-constrained designs but operates at 0°C to 70°C, which narrows the lower temperature range compared to the original -40°C specification. MAX13089ECSD+ and MAX13089EESD+ support both full and half-duplex modes, offering extended functionality for applications requiring half-duplex operation. MAX13089ECSD+ uses a 28-DIP through-hole package, suitable for legacy board designs.

All recommended substitutes carry ROHS3 compliance and EAR99 export classification, matching the regulatory profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can MAX13086EESD+ directly replace SP3086EEN-L without PCB modifications?

A: Yes. MAX13086EESD+ maintains identical 14-SOIC package geometry, pin count, and electrical interface specifications. No PCB layout changes are required for direct substitution.

Q: What is the significance of the 100 mV receiver hysteresis specification?

A: Receiver hysteresis determines the voltage differential required to switch the receiver output state, affecting noise immunity and signal integrity. The SP3086EEN-L and its primary substitutes (MAX13086EESD+, MAX13089EASD+) all specify 100 mV hysteresis, ensuring equivalent noise rejection characteristics.

Q: Why do ISL83086EIBZ variants have lower data rates (10 Mbps vs. 20 Mbps)?

A: The ISL83086EIBZ is a different silicon implementation from Renesas Electronics with different electrical characteristics. While it supports RS422/RS485 protocols and maintains the same package and supply voltage, its maximum data rate is specified at 10 Mbps. Applications requiring the full 20 Mbps bandwidth should use MAX13086 or MAX13089 series parts.

Q: Are there differences between tube and tape & reel packaging options?

A: Tube and tape & reel (TR) packaging contain identical die and electrical specifications. The difference is in handling and storage format. Tube packaging is suitable for manual assembly or small-volume production. Tape & reel packaging is optimized for automated pick-and-place assembly. Both formats are interchangeable from an electrical standpoint.

Q: Can MAX13089EESD+ be used as a substitute if the application requires half-duplex operation?

A: Yes. MAX13089EESD+ supports both full-duplex and half-duplex RS422/RS485 operation. The part is backward compatible with full-duplex-only designs and adds half-duplex capability for applications that require it. Operating temperature range is -40°C to 85°C, matching the original specification.

Q: What is the moisture sensitivity level (MSL) and why does it matter?

A: MSL indicates the maximum time a component can be stored in ambient conditions before requiring baking prior to reflow soldering. SP3086EEN-L specifies MSL 2 (1 year). Primary substitutes MAX13086EESD+ and MAX13089EASD+ specify MSL 1 (unlimited), providing superior shelf life and reducing moisture-related soldering defects. ISL83086EIBZ specifies MSL 3 (168 hours), requiring more careful handling and storage protocols.

Q: Is the extended temperature range (-40°C to 125°C) of MAX13089EASD+ beneficial for all applications?

A: Extended temperature range provides additional thermal margin for industrial and automotive environments subject to extreme temperature cycling. For applications operating within -40°C to 85°C, the extended range offers no functional advantage but may reduce thermal stress on the component during transient temperature excursions.

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