SP3071EMN-L RS422/RS485 Transceiver Equivalent & Substitute Parts

Part Overview

The SP3071EMN-L is a full-duplex RS422/RS485 transceiver manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This part operates at 3.3V with a 250 kbps data rate and 15 mV receiver hysteresis, designed for industrial communication applications requiring reliable serial data transmission over twisted-pair cabling.

The SP3071EMN-L is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Active alternatives with compatible electrical and mechanical specifications are available from Analog Devices Inc. and MaxLinear, Inc.

Key Parameters

Parameter	SP3071EMN-L
Manufacturer	MaxLinear, Inc.
Product Status	Obsolete
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Full
Receiver Hysteresis	15 mV
Data Rate	250 kbps
Voltage - Supply	3.3V
Operating Temperature	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SP3071EMN-L is determined by the following critical parameters:

Primary Compatibility Criteria:

Protocol: RS422/RS485 full-duplex operation
Package: 8-SOIC surface mount form factor
Number of Drivers/Receivers: 1/1 configuration
Voltage Supply Range: Compatibility with 3.3V nominal operation
Data Rate: Minimum 250 kbps capability
Operating Temperature Range: Support for -40°C to 125°C or -40°C to 85°C
Mounting Type: Surface mount technology
Moisture Sensitivity: MSL 1 (Unlimited)

Substitute parts are grouped into two categories based on operating temperature range:

Category A - Extended Temperature Range (-40°C to 125°C): Parts suitable for applications requiring the full temperature range of the original SP3071EMN-L.

Category B - Standard Temperature Range (-40°C to 85°C): Parts with reduced upper temperature limit, suitable for applications operating within this narrower range.

All substitute parts maintain identical package geometry, pin configuration, and core RS422/RS485 transceiver functionality. Differences in receiver hysteresis (15 mV vs. 100 mV) and data rate capabilities (250 kbps, 500 kbps, or 16 Mbps) do not preclude substitution when the application requirements are met or exceeded.

Parameter Comparison

Part Number	Manufacturer	Product Status	Protocol	Data Rate	Voltage Supply	Operating Temp	Receiver Hysteresis	Package	RoHS Status
SP3071EMN-L	MaxLinear, Inc.	Obsolete	RS422, RS485	250 kbps	3.3V	-40°C ~ 125°C	15 mV	8-SOIC	N/A
SP3071EEN-L/TR	MaxLinear, Inc.	Active	RS422, RS485	250 kbps	3.3V	-40°C ~ 85°C	15 mV	8-SOIC	RoHS Compliant
MAX3071EASA+	Analog Devices Inc./Maxim Integrated	Active	RS422, RS485	250 kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	8-SOIC	ROHS3 Compliant
ADM3071EARZ	Analog Devices Inc.	Active	RS422, RS485	250 kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	8-SOIC	ROHS3 Compliant
ADM3071EARZ-REEL7	Analog Devices Inc.	Active	RS422, RS485	250 kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	8-SOIC	ROHS3 Compliant
ADM3074EARZ	Analog Devices Inc.	Active	RS422, RS485	500 kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	8-SOIC	ROHS3 Compliant
ADM3074EARZ-REEL7	Analog Devices Inc.	Active	RS422, RS485	500 kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	8-SOIC	ROHS3 Compliant
ADM3074EYRZ	Analog Devices Inc.	Active	RS422, RS485	500 kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	8-SOIC	ROHS3 Compliant
ADM3074EYRZ-REEL7	Analog Devices Inc.	Active	RS422, RS485	500 kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	8-SOIC	ROHS3 Compliant
ADM3077EARZ	Analog Devices Inc.	Active	RS422, RS485	16 Mbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	8-SOIC	ROHS3 Compliant
ADM3077EARZ-REEL7	Analog Devices Inc.	Active	RS422, RS485	16 Mbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	8-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation for Extended Temperature Applications (-40°C to 125°C):

MAX3071EASA+ and ADM3074EYRZ/ADM3074EYRZ-REEL7 are the preferred substitutes when the full operating temperature range of the original SP3071EMN-L must be maintained. Both parts are active products with ROHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory compliance. MAX3071EASA+ maintains the 250 kbps data rate specification, while ADM3074EYRZ variants provide enhanced 500 kbps capability.

Primary Recommendation for Standard Temperature Applications (-40°C to 85°C):

SP3071EEN-L/TR is the direct MaxLinear equivalent, maintaining identical electrical specifications and 15 mV receiver hysteresis. This part is active and RoHS compliant. For Analog Devices alternatives, ADM3071EARZ and ADM3071EARZ-REEL7 provide equivalent 250 kbps performance with ROHS3 compliance. ADM3074EARZ and ADM3074EARZ-REEL7 offer higher 500 kbps data rate capability within the same temperature range.

Packaging Considerations:

Tube packaging (standard) is suitable for lower-volume applications and manual assembly. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging options are optimized for automated pick-and-place assembly and high-volume production.

Compliance and Supply Chain:

All recommended substitute parts carry active product status, ensuring continued manufacturing support and availability. ROHS3 and RoHS compliance certifications confirm environmental and regulatory alignment with modern manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can ADM3074EARZ be used as a direct replacement for SP3071EMN-L?

A: ADM3074EARZ is electrically compatible and maintains the same 8-SOIC package. However, it operates within the -40°C to 85°C temperature range, not the full -40°C to 125°C range of the original part. If your application operates within -40°C to 85°C, ADM3074EARZ is a valid substitute with enhanced 500 kbps data rate capability. For applications requiring -40°C to 125°C operation, use ADM3074EYRZ instead.

Q: What is the difference between SP3071EEN-L/TR and SP3071EMN-L?

A: SP3071EEN-L/TR is the active equivalent from MaxLinear with identical electrical specifications (250 kbps, 15 mV hysteresis, 3.3V supply). The primary differences are product status (active vs. obsolete), packaging format (Tape & Reel vs. standard), and compliance certifications (RoHS Compliant). The operating temperature range is -40°C to 85°C versus -40°C to 125°C for the original part.

Q: Why do some substitutes have 100 mV receiver hysteresis instead of 15 mV?

A: Receiver hysteresis is a provided parameter that differs between part families. The 100 mV hysteresis in Analog Devices parts (ADM3071, ADM3074, ADM3077 series) is a design characteristic that does not prevent substitution. Higher hysteresis provides greater noise immunity in noisy environments. Selection should be based on application requirements and system noise characteristics.

Q: Are ADM3077EARZ and ADM3077EARZ-REEL7 suitable replacements?

A: ADM3077EARZ variants are compatible in package and protocol but operate at 16 Mbps data rate, significantly exceeding the 250 kbps requirement of SP3071EMN-L. These parts are suitable only if your application can accommodate the higher data rate capability. They operate within -40°C to 85°C temperature range and are not recommended for applications requiring the full -40°C to 125°C range.

Q: What packaging format should I select for my application?

A: Tube packaging is standard for manual assembly and lower-volume applications. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats are designed for automated assembly equipment and high-volume production. Select based on your assembly process and production volume requirements.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitute parts carry RoHS or ROHS3 compliance certifications. SP3071EEN-L/TR is RoHS Compliant. All Analog Devices parts (ADM3071, ADM3074, ADM3077 series) are ROHS3 Compliant. Compliance status confirms environmental and regulatory alignment with current manufacturing standards.

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