MAX3486ESA Equivalent & Substitute Parts

Part Overview

The MAX3486ESA 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, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. The MAX3486ESA supports 2.5 Mbps data rates with 1/1 driver/receiver configuration and operates across the 3V to 3.6V supply voltage range with -40°C to 85°C temperature specifications.

Key Parameters

Parameter	MAX3486ESA
Manufacturer	Analog Devices Inc./Maxim Integrated
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Half
Data Rate	2.5 Mbps
Voltage - Supply	3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Receiver Hysteresis	50 mV
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX3486ESA is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

Protocol: RS422/RS485 half-duplex operation
Number of Drivers/Receivers: 1/1 configuration
Duplex Mode: Half-duplex
Package Type: 8-SOIC surface mount
Supply Voltage Range: 3V ~ 3.6V
Operating Temperature Range: -40°C ~ 85°C
Data Rate: Minimum 2.5 Mbps capability

Substitute parts are grouped into three categories based on their relationship to the main part:

Parametric Equivalents maintain identical electrical specifications and package configuration, differing only in packaging format (tube vs. reel) and product status (active vs. obsolete).

Direct Manufacturer Alternatives provide equivalent functionality within the same protocol family but may exhibit minor variations in receiver hysteresis or data rate specifications while maintaining full compatibility with the 8-SOIC package and supply voltage requirements.

Manufacturer Recommended Alternatives offer enhanced performance characteristics (higher data rates or improved receiver hysteresis) while maintaining the core 1/1 half-duplex RS422/RS485 transceiver architecture and identical package footprint.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Duplex	Data Rate	Supply Voltage	Temp Range	Package	Receiver Hysteresis	Product Status	RoHS Status
MAX3486ESA	Analog Devices/Maxim	RS422, RS485	1/1	Half	2.5 Mbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	50 mV	Obsolete	Non-compliant
MAX3486EESA+	Analog Devices/Maxim	RS422, RS485	1/1	Half	2.5 Mbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	50 mV	Active	ROHS3 Compliant
MAX3486ESA+	Analog Devices/Maxim	RS422, RS485	1/1	Half	2.5 Mbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	50 mV	Active	ROHS3 Compliant
LTC1480IS8#TRPBF	Analog Devices	RS422, RS485	1/1	Half	2.5 Mbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	70 mV	Active	ROHS3 Compliant
ADM3483ARZ	Analog Devices	RS422, RS485	1/1	Half	250 kbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	50 mV	Active	ROHS3 Compliant
ADM3483ARZ-REEL7	Analog Devices	RS422, RS485	1/1	Half	250 kbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	50 mV	Active	ROHS3 Compliant
ADM3483EARZ	Analog Devices	RS422, RS485	1/1	Half	250 kbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	50 mV	Active	ROHS3 Compliant
ADM3483EARZ-REEL7	Analog Devices	RS422, RS485	1/1	Half	250 kbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	50 mV	Active	ROHS3 Compliant
ADM3485ARZ	Analog Devices	RS422, RS485	1/1	Half	10 Mbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	50 mV	Active	ROHS3 Compliant
ADM3485ARZ-REEL7	Analog Devices	RS422, RS485	1/1	Half	10 Mbps	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC	50 mV	Active	ROHS3 Compliant
ADM3485EARZ	UMW	RS422, RS485	1/1	Half	12 Mbps	2.97V ~ 3.63V	-40°C ~ 85°C	8-SOIC	30 mV	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): MAX3486EESA+ and MAX3486ESA+ are parametric equivalents of the MAX3486ESA, maintaining identical electrical performance and package configuration. Both parts are active products with ROHS3 compliance, making them suitable for new designs and production transitions from the obsolete MAX3486ESA.

For RoHS Compliance Transition: All substitute parts listed are ROHS3 compliant, addressing regulatory requirements that the original MAX3486ESA does not meet. Selection among compliant alternatives depends on data rate requirements and supply voltage specifications for the target application.

For Enhanced Performance Applications: The ADM3485 series (ADM3485ARZ, ADM3485ARZ-REEL7, ADM3485EARZ) provides higher data rate capability (10-12 Mbps) compared to the MAX3486ESA (2.5 Mbps) while maintaining identical 1/1 half-duplex RS422/RS485 architecture and 8-SOIC package footprint. These parts are suitable for applications requiring higher bandwidth within the same physical form factor.

For Lower Data Rate Applications: The ADM3483 series (ADM3483ARZ, ADM3483ARZ-REEL7, ADM3483EARZ, ADM3483EARZ-REEL7) operates at 250 kbps and maintains all other electrical and mechanical specifications compatible with the MAX3486ESA. These parts are appropriate for applications where the 2.5 Mbps capability of the original part exceeds system requirements.

For Receiver Hysteresis Variations: LTC1480IS8#TRPBF exhibits 70 mV receiver hysteresis compared to the MAX3486ESA specification of 50 mV, providing enhanced noise immunity in electrically noisy environments while maintaining 2.5 Mbps data rate and identical package configuration.

Frequently Asked Questions (FAQ)

Q: Can MAX3486EESA+ and MAX3486ESA+ be used as direct replacements for MAX3486ESA?

A: Yes. Both parts maintain identical electrical specifications (2.5 Mbps data rate, 50 mV receiver hysteresis, 3V-3.6V supply, -40°C to 85°C operating range) and 8-SOIC package configuration. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Pin-for-pin compatibility is maintained.

Q: What is the difference between tube and reel packaging options?

A: Tube and reel packaging (indicated by -REEL7 suffix) represent different distribution formats for the same electrical component. Tube packaging is suitable for lower-volume applications, while reel packaging is optimized for automated assembly processes. Electrical specifications and performance are identical between packaging formats.

Q: Are the ADM3483 and ADM3485 series compatible with MAX3486ESA applications?

A: Compatibility depends on data rate requirements. The ADM3483 series operates at 250 kbps (lower than MAX3486ESA's 2.5 Mbps), while ADM3485 series operates at 10-12 Mbps (higher than MAX3486ESA). All maintain identical 1/1 half-duplex RS422/RS485 protocol, 8-SOIC package, and -40°C to 85°C temperature range. Application-specific data rate requirements determine suitability.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. The original MAX3486ESA is RoHS non-compliant. All listed substitute parts are ROHS3 compliant, making them suitable for applications with regulatory compliance requirements.

Q: How does receiver hysteresis affect transceiver selection?

A: Receiver hysteresis determines the voltage differential required for the receiver to switch states. The MAX3486ESA specifies 50 mV hysteresis. LTC1480IS8#TRPBF provides 70 mV hysteresis for enhanced noise immunity, while ADM3485EARZ provides 30 mV for faster switching response. Selection depends on signal integrity requirements in the target application environment.

Q: Can parts with different data rates be used interchangeably?

A: Data rate specifications indicate maximum supported transmission speeds. A part with higher data rate capability (ADM3485 at 10 Mbps) can operate in applications requiring lower data rates (2.5 Mbps or less). Conversely, a part with lower data rate capability (ADM3483 at 250 kbps) cannot support applications requiring 2.5 Mbps operation. Selection must match or exceed application data rate requirements.

Q: What supply voltage range variations exist among substitute parts?

A: The MAX3486ESA specifies 3V to 3.6V supply voltage. Most substitute parts maintain this specification. ADM3485EARZ specifies 2.97V to 3.63V, providing slightly wider voltage tolerance. Verify supply voltage specifications match the power distribution design of the target application.

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