SP3073EEN-L Equivalent & Substitute Parts

Part Overview

The SP3073EEN-L is a full-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in a 14-SOIC surface mount package. This component operates at 3.3V supply voltage with a 500kbps data rate and supports industrial temperature ranges from -40°C to 85°C. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	SP3073EEN-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS422, RS485
Duplex Configuration	Full
Number of Drivers/Receivers	1/1
Data Rate	500kbps
Voltage Supply	3.3V
Operating Temperature	-40°C to 85°C
Receiver Hysteresis	15 mV
Package/Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the SP3073EEN-L is determined by the following critical parameters:

Primary Compatibility Criteria:

RS422/RS485 protocol support with full-duplex configuration
1/1 driver/receiver architecture
14-SOIC package footprint (0.154", 3.90mm width)
Surface mount technology
Operating temperature range: -40°C to 85°C minimum
Supply voltage compatibility: 3.3V nominal operation

Secondary Compatibility Considerations:

Data rate capability (minimum 500kbps required)
Receiver hysteresis specification
Packaging format (tube, tape & reel, or cut tape)
Product status (active preferred for long-term availability)
RoHS and REACH compliance status

Substitute parts are grouped into three categories based on data rate performance: 250kbps-rated devices (ADM3070 series), 500kbps-rated devices (ADM3073/MAX3073 series), and high-speed 16Mbps devices (ADM3076 series). All listed substitutes maintain identical package geometry and pin configuration, enabling direct PCB replacement.

Parameter Comparison

Part Number	Manufacturer	Protocol	Data Rate	Supply Voltage	Operating Temp	Receiver Hysteresis	Package	Product Status	RoHS Status
SP3073EEN-L	MaxLinear, Inc.	RS422, RS485	500kbps	3.3V	-40°C to 85°C	15 mV	14-SOIC	Obsolete	Not specified
ADM3073EARZ	Analog Devices Inc.	RS422, RS485	500kbps	3V to 3.6V	-40°C to 85°C	100 mV	14-SOIC	Active	ROHS3 Compliant
ADM3073EARZ-REEL7	Analog Devices Inc.	RS422, RS485	500kbps	3V to 3.6V	-40°C to 85°C	100 mV	14-SOIC	Active	ROHS3 Compliant
MAX3073EESD+	Analog Devices Inc./Maxim Integrated	RS422, RS485	500kbps	3V to 3.6V	-40°C to 85°C	100 mV	14-SOIC	Active	ROHS3 Compliant
MAX3073EESD+T	Analog Devices Inc./Maxim Integrated	RS422, RS485	500kbps	3V to 3.6V	-40°C to 85°C	100 mV	14-SOIC	Active	ROHS3 Compliant
ADM3070EARZ	Analog Devices Inc.	RS422, RS485	250kbps	3V to 3.6V	-40°C to 85°C	100 mV	14-SOIC	Active	ROHS3 Compliant
ADM3070EARZ-REEL7	Analog Devices Inc.	RS422, RS485	250kbps	3V to 3.6V	-40°C to 85°C	100 mV	14-SOIC	Active	ROHS3 Compliant
ADM3070EYRZ	Analog Devices Inc.	RS422, RS485	250kbps	3V to 3.6V	-40°C to 125°C	100 mV	14-SOIC	Active	ROHS3 Compliant
ADM3070EYRZ-REEL7	Analog Devices Inc.	RS422, RS485	250kbps	3V to 3.6V	-40°C to 125°C	100 mV	14-SOIC	Active	ROHS3 Compliant
ADM3076EARZ	Analog Devices Inc.	RS422, RS485	16Mbps	3V to 3.6V	-40°C to 85°C	100 mV	14-SOIC	Active	ROHS3 Compliant
ADM3076EARZ-REEL7	Analog Devices Inc.	RS422, RS485	16Mbps	3V to 3.6V	-40°C to 85°C	100 mV	14-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Matched Data Rate): ADM3073EARZ, ADM3073EARZ-REEL7, MAX3073EESD+, and MAX3073EESD+T are direct functional equivalents operating at 500kbps, matching the SP3073EEN-L data rate specification. All are manufactured by Analog Devices Inc. with active product status and ROHS3 compliance. Supply voltage range (3V to 3.6V) encompasses the original 3.3V specification. These parts are recommended for applications requiring identical performance characteristics and are available in multiple packaging formats (tube and tape & reel).

Secondary Substitutes (Lower Data Rate): ADM3070 series devices (EARZ, EARZ-REEL7, EYRZ, EYRZ-REEL7) operate at 250kbps and are suitable for applications where the original 500kbps data rate exceeds system requirements. The ADM3070EYRZ and ADM3070EYRZ-REEL7 variants extend the operating temperature range to -40°C to 125°C, providing enhanced thermal performance for demanding environments. These parts are appropriate for cost-optimized designs or legacy system replacements where bandwidth is not a limiting factor.

High-Performance Substitutes (Higher Data Rate): ADM3076EARZ and ADM3076EARZ-REEL7 operate at 16Mbps, providing significant performance headroom for future-proofing or applications requiring higher communication speeds. These parts maintain identical package geometry and pin configuration while offering substantially increased data rate capability. Selection of high-performance variants is justified when system architecture supports higher bandwidth utilization.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with modern manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can ADM3073EARZ directly replace SP3073EEN-L on existing PCBs? A: Yes. Both parts use identical 14-SOIC package geometry (0.154", 3.90mm width) with matching pin configurations. Direct PCB replacement is possible without layout modifications. Verify supply voltage compatibility in your circuit design, as ADM3073EARZ operates across 3V to 3.6V versus the original 3.3V specification.

Q: What is the difference between ADM3073EARZ and ADM3073EARZ-REEL7? A: Both parts are electrically identical. The primary difference is packaging format: ADM3073EARZ is supplied in tube packaging, while ADM3073EARZ-REEL7 is supplied in tape & reel format. Selection depends on assembly process requirements and volume considerations. Tape & reel packaging is typically preferred for automated pick-and-place assembly.

Q: Why are ADM3070 series devices listed as substitutes if they operate at 250kbps instead of 500kbps? A: ADM3070 devices are functional substitutes for applications where the original 500kbps data rate is not a system requirement. They maintain identical package, protocol support, and operating temperature range. These parts are appropriate for legacy system support or cost-optimized designs. Confirm that your application does not require the higher data rate before selecting ADM3070 variants.

Q: Can I use ADM3076EARZ in place of SP3073EEN-L? A: Yes, with consideration for application requirements. ADM3076EARZ provides 16Mbps data rate capability, significantly exceeding the original 500kbps specification. This higher performance is backward compatible with lower-speed RS422/RS485 systems. Use ADM3076 variants when future bandwidth expansion is anticipated or when system architecture supports higher communication speeds.

Q: What is the significance of the EYRZ suffix on ADM3070 devices? A: The EYRZ suffix indicates extended operating temperature range (-40°C to 125°C) compared to EARZ variants (-40°C to 85°C). Select EYRZ parts for applications requiring enhanced thermal performance in high-temperature environments. Both variants maintain identical electrical specifications and package geometry.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What packaging options are available for substitute parts? A: Substitute parts are available in three packaging formats: tube (standard packaging), tape & reel (TR) for automated assembly, and cut tape (CT) with Digi-Reel for mixed-volume applications. Packaging selection depends on assembly process requirements and order quantities.

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