SP3070EMN-L Equivalent & Substitute Parts

Part Overview

The SP3070EMN-L is a 1/1 full-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in a 14-SOIC surface mount package. This part is classified as obsolete, with 6000 units available in new original inventory. Due to its obsolete status, equivalent substitute parts from active product lines are necessary for new designs and ongoing production requirements. Substitute parts maintain the same functional protocol, duplex configuration, and package form factor while offering improved availability and extended product lifecycle support.

Key Parameters

Parameter	SP3070EMN-L
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Full
Data Rate	250 kbps
Voltage - Supply	3.3V
Operating Temperature	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Receiver Hysteresis	15 mV
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the SP3070EMN-L is determined by the following critical parameters:

Protocol Compatibility: RS422/RS485 full-duplex transceiver function
Package Compatibility: 14-SOIC surface mount form factor
Electrical Interface: 1/1 driver/receiver configuration
Data Rate: Minimum 250 kbps capability
Supply Voltage Range: Compatibility with 3.3V nominal operation
Operating Temperature: Support for -40°C to 125°C range or subset thereof
Receiver Hysteresis: Acceptable variation within transceiver specifications

Substitute parts are grouped into two categories:

Category 1 - Direct MaxLinear Equivalents: SP3070EEN-L/TR maintains identical electrical specifications with active product status and improved packaging options (Tape & Reel).

Category 2 - Cross-Manufacturer Alternatives: Analog Devices ADM3070 and Maxim Integrated MAX3070 series provide functional equivalence with enhanced specifications (100 mV hysteresis, extended MSL rating, ROHS3 compliance). These parts support the same protocol, duplex mode, and package while offering higher data rate variants (ADM3073 at 500 kbps, ADM3076 at 16 Mbps) for applications requiring increased bandwidth.

Parameter Comparison

Part Number	Manufacturer	Protocol	Data Rate	Supply Voltage	Operating Temp	Receiver Hysteresis	Package	Product Status	Packaging Type
SP3070EMN-L	MaxLinear, Inc.	RS422, RS485	250 kbps	3.3V	-40°C ~ 125°C	15 mV	14-SOIC	Obsolete	Tube
SP3070EEN-L/TR	MaxLinear, Inc.	RS422, RS485	250 kbps	3.3V	-40°C ~ 85°C	15 mV	14-SOIC	Active	Tape & Reel
ADM3070EYRZ	Analog Devices Inc.	RS422, RS485	250 kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	14-SOIC	Active	Tube
ADM3070EYRZ-REEL7	Analog Devices Inc.	RS422, RS485	250 kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	14-SOIC	Active	Tape & Reel
MAX3070EASD+	Analog Devices Inc./Maxim Integrated	RS422, RS485	250 kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	14-SOIC	Active	Tube
MAX3070EASD+T	Analog Devices Inc./Maxim Integrated	RS422, RS485	250 kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	14-SOIC	Active	Tape & Reel
ADM3070EARZ	Analog Devices Inc.	RS422, RS485	250 kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	14-SOIC	Active	Tube
ADM3070EARZ-REEL7	Analog Devices Inc.	RS422, RS485	250 kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	14-SOIC	Active	Tape & Reel
ADM3073EARZ	Analog Devices Inc.	RS422, RS485	500 kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	14-SOIC	Active	Tube
ADM3073EARZ-REEL7	Analog Devices Inc.	RS422, RS485	500 kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	14-SOIC	Active	Tape & Reel
ADM3076EARZ	Analog Devices Inc.	RS422, RS485	16 Mbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	14-SOIC	Active	Tube

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications)

SP3070EEN-L/TR is the primary recommended substitute, offering identical electrical performance to the SP3070EMN-L with active product status. This part maintains the 15 mV receiver hysteresis and 250 kbps data rate. The operating temperature range is reduced to -40°C ~ 85°C; applications requiring the full -40°C ~ 125°C range must evaluate alternative solutions. This part is available in Tape & Reel packaging, improving supply chain efficiency for production volumes.

For Extended Temperature Range Applications

ADM3070EYRZ and MAX3070EASD+ maintain the -40°C ~ 125°C operating temperature specification of the original part while supporting 250 kbps data rate. Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, providing superior reliability characteristics compared to the obsolete SP3070EMN-L. Supply voltage range is 3V ~ 3.6V, which encompasses the 3.3V nominal specification.

For Higher Data Rate Requirements

ADM3073EARZ and ADM3073EARZ-REEL7 provide 500 kbps data rate capability within the same 14-SOIC package. These parts are suitable for applications requiring increased bandwidth while maintaining RS422/RS485 protocol compatibility and full-duplex operation.

ADM3076EARZ offers 16 Mbps data rate for high-speed RS422/RS485 applications, maintaining the same package and protocol specifications.

Compliance and Certification

All recommended substitute parts carry ROHS3 compliance and REACH Unaffected status. Moisture sensitivity levels are MSL 1 (Unlimited) for Analog Devices and Maxim parts, compared to MSL 2 (1 Year) for the original SP3070EMN-L, indicating improved handling and storage characteristics.

Frequently Asked Questions (FAQ)

Q: Can SP3070EEN-L/TR be used as a direct replacement for SP3070EMN-L?

A: SP3070EEN-L/TR is functionally equivalent with identical electrical specifications (250 kbps, 15 mV hysteresis, RS422/RS485 protocol). The operating temperature range is reduced from -40°C ~ 125°C to -40°C ~ 85°C. If your application operates within -40°C ~ 85°C, this part provides direct substitution with active product status and improved packaging.

Q: What is the difference between ADM3070EYRZ and ADM3070EARZ?

A: Both parts are Analog Devices ADM3070 transceivers with identical data rate (250 kbps) and protocol specifications. The primary difference is operating temperature range: ADM3070EYRZ supports -40°C ~ 125°C, while ADM3070EARZ supports -40°C ~ 85°C. Select based on your application's temperature requirements.

Q: Are Tape & Reel packaged parts (REEL7 suffix) electrically identical to Tube packaged parts?

A: Yes. The REEL7 suffix indicates Tape & Reel packaging format only. Electrical specifications, performance characteristics, and pin configurations are identical between Tube and Tape & Reel variants of the same base part number. Selection depends on production volume and assembly line requirements.

Q: Can I use ADM3073EARZ or ADM3076EARZ if my application only requires 250 kbps?

A: Yes. ADM3073EARZ (500 kbps) and ADM3076EARZ (16 Mbps) are backward compatible with 250 kbps applications. These higher-speed variants maintain the same RS422/RS485 protocol, 1/1 driver/receiver configuration, and 14-SOIC package. They are suitable for applications where future bandwidth expansion may be required or where standardizing on a single transceiver variant across multiple product lines is beneficial.

Q: What is the significance of the 100 mV receiver hysteresis in Analog Devices and Maxim parts compared to 15 mV in the original?

A: Receiver hysteresis determines the voltage difference between rising and falling threshold levels. The 100 mV hysteresis in ADM3070, MAX3070, ADM3073, and ADM3076 parts provides improved noise immunity compared to the 15 mV specification of SP3070EMN-L. This is a beneficial characteristic for applications operating in electrically noisy environments or with long cable runs.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts (SP3070EEN-L/TR, ADM3070 series, MAX3070 series, ADM3073 series, ADM3076 series) carry ROHS3 compliance certification. The original SP3070EMN-L does not specify ROHS3 status. This compliance is relevant for applications subject to European Union RoHS Directive requirements.

Q: What supply voltage range should I design for when using substitute parts?

A: The original SP3070EMN-L specifies 3.3V nominal supply. Substitute parts from Analog Devices and Maxim specify 3V ~ 3.6V range, which encompasses 3.3V operation. SP3070EEN-L/TR maintains the 3.3V specification. Design power supplies to deliver 3.3V ±5% (3.135V ~ 3.465V) for compatibility across all substitute options.

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