MAX3486CSA RS422/RS485 Half-Duplex Transceiver Equivalent & Substitute Parts

Part Overview

The MAX3486CSA is a half-duplex RS422/RS485 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC surface mount package. This component is classified as obsolete, with 5,593 units currently in stock. The part operates at 3V to 3.6V supply voltage with a maximum data rate of 2.5 Mbps and supports operating temperatures from 0°C to 70°C. Due to its obsolete status and RoHS non-compliance, identifying functionally equivalent active alternatives is essential for new designs and long-term supply chain planning.

Key Parameters

Parameter	MAX3486CSA
Type	Transceiver Half-Duplex
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Data Rate	2.5 Mbps
Voltage Supply	3V – 3.6V
Operating Temperature	0°C – 70°C
Receiver Hysteresis	50 mV
Package/Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS Non-Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the MAX3486CSA is determined by strict adherence to the following electrical and mechanical parameters:

Protocol Compatibility: All substitutes must support RS422 and RS485 protocols
Transceiver Configuration: 1 driver and 1 receiver (half-duplex operation)
Package Compatibility: 8-SOIC surface mount package with 0.154" width (3.90mm)
Supply Voltage Range: 3V to 3.6V operation
Data Rate Capability: Minimum 2.5 Mbps support
Receiver Hysteresis: 50 mV nominal specification
Thermal Operating Range: Minimum 0°C to 70°C (extended range acceptable)

Substitute parts are categorized into three groups: parametric equivalents (identical electrical specifications with active product status), direct equivalents (compatible electrical parameters with minor variations), and upgrades (enhanced specifications with extended temperature range).

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Operating Temp	Receiver Hysteresis	RoHS Status	Packaging	Inventory
MAX3486CSA	Analog Devices/Maxim	Obsolete	2.5 Mbps	0°C – 70°C	50 mV	Non-Compliant	Tube	5,593
MAX3486CSA+	Analog Devices/Maxim	Active	2.5 Mbps	0°C – 70°C	50 mV	RoHS3 Compliant	Tube	3,474
MAX3486ECSA+	Analog Devices/Maxim	Active	2.5 Mbps	0°C – 70°C	50 mV	RoHS3 Compliant	Tube	3,890
LTC1480CS8#PBF	Analog Devices	Active	150 KBd	0°C – 70°C	40 mV	RoHS3 Compliant	Tube	2,254
LTC1480CS8#TRPBF	Analog Devices	Active	150 KBd	0°C – 70°C	40 mV	RoHS3 Compliant	Cut Tape/Digi-Reel	1,223
LTC1480IS8#PBF	Analog Devices	Active	2.5 Mbps	-40°C – 85°C	70 mV	RoHS3 Compliant	Tube	3,562
LTC1480IS8#TRPBF	Analog Devices	Active	2.5 Mbps	-40°C – 85°C	70 mV	RoHS3 Compliant	Cut Tape/Digi-Reel	2,000
ADM3483ARZ	Analog Devices	Active	250 kbps	-40°C – 85°C	50 mV	RoHS3 Compliant	Tube	12,900
ADM3483ARZ-REEL7	Analog Devices	Active	250 kbps	-40°C – 85°C	50 mV	RoHS3 Compliant	Cut Tape/Digi-Reel	1,451
ADM3483EARZ	Analog Devices	Active	250 kbps	-40°C – 85°C	50 mV	RoHS3 Compliant	Tube	1,915
ADM3483EARZ-REEL7	Analog Devices	Active	250 kbps	-40°C – 85°C	50 mV	RoHS3 Compliant	Cut Tape/Digi-Reel	21,898

Engineering Selection Recommendations

Parametric Equivalents (Recommended for Direct Replacement)

MAX3486CSA+ and MAX3486ECSA+ are direct parametric equivalents with identical electrical specifications to the original MAX3486CSA. Both parts maintain 2.5 Mbps data rate, 50 mV receiver hysteresis, and 0°C to 70°C operating temperature range. The primary advantage is active product status and RoHS3 compliance, eliminating supply chain risk and regulatory concerns. These parts are suitable for applications requiring no design modification.

Direct Equivalents (Compatible with Minor Parameter Variance)

LTC1480CS8#PBF and LTC1480CS8#TRPBF are functionally compatible but operate at reduced data rate (150 KBd versus 2.5 Mbps) and lower receiver hysteresis (40 mV versus 50 mV). These parts are appropriate only for applications where the lower data rate specification is acceptable. Both are RoHS3 compliant and active.

Upgrade Options (Enhanced Specifications)

LTC1480IS8#PBF and LTC1480IS8#TRPBF provide extended operating temperature range (-40°C to 85°C) and full 2.5 Mbps data rate capability. These parts are suitable for applications requiring wider thermal operating margins. Receiver hysteresis is specified at 70 mV, which exceeds the original 50 mV specification.

Manufacturer Recommended Alternatives

ADM3483ARZ, ADM3483ARZ-REEL7, ADM3483EARZ, and ADM3483EARZ-REEL7 are manufacturer-recommended alternatives with extended temperature range (-40°C to 85°C) and RoHS3 compliance. Data rate is specified at 250 kbps, which is lower than the original 2.5 Mbps specification. Receiver hysteresis matches the original at 50 mV. These parts are recommended for new designs requiring long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can MAX3486CSA+ be used as a direct drop-in replacement for MAX3486CSA?

A: Yes. MAX3486CSA+ maintains identical electrical specifications including 2.5 Mbps data rate, 50 mV receiver hysteresis, 3V to 3.6V supply voltage, and 0°C to 70°C operating temperature. The primary differences are active product status and RoHS3 compliance. No design modification is required.

Q: What is the key difference between LTC1480CS8 and LTC1480IS8 variants?

A: LTC1480CS8 operates at 150 KBd data rate with 0°C to 70°C temperature range. LTC1480IS8 operates at 2.5 Mbps data rate with extended -40°C to 85°C temperature range. Selection depends on application data rate requirements and thermal operating environment.

Q: Are all substitute parts available in the same 8-SOIC package?

A: Yes. All listed substitute parts use 8-SOIC surface mount packaging with 0.154" (3.90mm) width, ensuring mechanical compatibility with existing PCB layouts.

Q: What is the significance of RoHS3 compliance for these parts?

A: RoHS3 compliance indicates conformance to current environmental and hazardous substance restrictions. The original MAX3486CSA is RoHS non-compliant, making RoHS3-compliant alternatives necessary for applications subject to regulatory requirements or customer specifications.

Q: Can ADM3483 series parts replace MAX3486CSA in all applications?

A: ADM3483 series parts are manufacturer-recommended alternatives with identical receiver hysteresis (50 mV) and extended temperature range. However, data rate is specified at 250 kbps, which is lower than MAX3486CSA's 2.5 Mbps. Substitution is appropriate only for applications where the reduced data rate is acceptable.

Q: What packaging options are available for these substitute parts?

A: Substitute parts are available in two packaging formats: Tube (standard packaging) and Cut Tape with Digi-Reel (for automated assembly). Selection depends on procurement and assembly process requirements.

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