SP490EN-L Equivalent & Substitute Parts

Part Overview

The SP490EN-L is a 1/1 full-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The SP490EN-L operates at 4.75V to 5.25V supply voltage with a 5 Mbps data rate and 70 mV receiver hysteresis, suitable for industrial serial communication applications requiring RS422 or RS485 protocol support.

Key Parameters

Parameter	SP490EN-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Full
Package / Case	8-SOIC (0.154", 3.90mm Width)
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Data Rate	5 Mbps
Receiver Hysteresis	70 mV
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the SP490EN-L is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Protocol support: RS422 and RS485
Driver/Receiver configuration: 1/1 (single driver, single receiver)
Duplex mode: Full-duplex operation
Package type: 8-SOIC surface mount
Operating temperature range: -40°C to 85°C minimum
Mounting type: Surface mount

Voltage Supply Compatibility: Substitutes are grouped into two voltage classes:

5V Class (4.75V ~ 5.25V): SP490EEN-L/TR, ADM488ARZ-REEL7
3.3V Class (3V ~ 3.6V): ADM3490ARZ, ADM3490ARZ-REEL7, ADM3490EARZ, ADM3490EARZ-REEL7, ISL83490IBZ, ISL83490IBZ-T

Performance Variations: Data rate and receiver hysteresis vary among substitutes but do not prevent substitution when voltage supply requirements are met. The SP490EN-L operates at 5 Mbps with 70 mV hysteresis; substitutes range from 250 kbps to 16 Mbps with hysteresis values between 30 mV and 70 mV.

Product Status: All listed substitutes are active products with current manufacturing support, unlike the obsolete SP490EN-L.

Parameter Comparison

Part Number	Manufacturer	Voltage Supply	Data Rate	Receiver Hysteresis	Product Status	Packaging	RoHS Status
SP490EN-L	MaxLinear, Inc.	4.75V ~ 5.25V	5 Mbps	70 mV	Obsolete	-	-
SP490EEN-L/TR	MaxLinear, Inc.	4.75V ~ 5.25V	10 Mbps	70 mV	Active	Cut Tape & Digi-Reel	RoHS Compliant
ADM1490EBRZ	Analog Devices Inc.	4.75V ~ 5.25V	16 Mbps	30 mV	Active	Tube	ROHS3 Compliant
ADM1490EBRZ-REEL7	Analog Devices Inc.	4.75V ~ 5.25V	16 Mbps	30 mV	Active	Tape & Reel	ROHS3 Compliant
ADM3490ARZ	Analog Devices Inc.	3V ~ 3.6V	10 Mbps	50 mV	Active	Tube	ROHS3 Compliant
ADM3490ARZ-REEL7	Analog Devices Inc.	3V ~ 3.6V	10 Mbps	50 mV	Active	Cut Tape & Digi-Reel	ROHS3 Compliant
ADM3490EARZ	Analog Devices Inc.	3V ~ 3.6V	10 Mbps	50 mV	Active	Tube	ROHS3 Compliant
ADM3490EARZ-REEL7	Analog Devices Inc.	3V ~ 3.6V	10 Mbps	50 mV	Active	Cut Tape & Digi-Reel	ROHS3 Compliant
ADM488ARZ-REEL7	Analog Devices Inc.	4.5V ~ 5.5V	250 kbps	70 mV	Active	Cut Tape & Digi-Reel	ROHS3 Compliant
ISL83490IBZ	Renesas Electronics Corporation	3V ~ 3.6V	10 Mbps	50 mV	Active	Tube	ROHS3 Compliant
ISL83490IBZ-T	Renesas Electronics Corporation	3V ~ 3.6V	10 Mbps	50 mV	Active	Cut Tape & Digi-Reel	ROHS3 Compliant

Engineering Selection Recommendations

For 5V Supply Systems: SP490EEN-L/TR is the direct MaxLinear equivalent with identical voltage supply range and matching receiver hysteresis. It offers improved data rate performance (10 Mbps vs. 5 Mbps) and active product status with RoHS compliance. ADM1490EBRZ and ADM1490EBRZ-REEL7 from Analog Devices provide higher data rate capability (16 Mbps) within the 5V supply window with ROHS3 compliance and REACH unaffected status. ADM488ARZ-REEL7 operates within an extended voltage range (4.5V ~ 5.5V) but supports only 250 kbps data rate, suitable for lower-speed applications.

For 3.3V Supply Systems: ADM3490 series (ARZ, ARZ-REEL7, EARZ, EARZ-REEL7) and ISL83490 series (IBZ, IBZ-T) are compatible with 3V to 3.6V supply rails. All maintain 10 Mbps data rate with 50 mV receiver hysteresis. ADM3490 variants are available in both tube and tape & reel packaging from Analog Devices with ROHS3 compliance. ISL83490 variants from Renesas offer equivalent electrical performance with ROHS3 compliance; ISL83490IBZ-T provides tape & reel packaging with higher inventory availability (17,800 units).

Product Status Consideration: All substitute parts listed are active products with current manufacturing support, eliminating obsolescence risk associated with the SP490EN-L.

Frequently Asked Questions (FAQ)

Q: Can I use a 3.3V substitute part in a 5V system? A: No. The ADM3490 and ISL83490 series are rated for 3V to 3.6V supply voltage and are not compatible with 5V systems. Exceeding the maximum supply voltage rating will damage the device. Use only 5V-rated substitutes: SP490EEN-L/TR, ADM1490EBRZ, ADM1490EBRZ-REEL7, or ADM488ARZ-REEL7.

Q: What is the difference between tube and tape & reel packaging? A: Tube packaging is used for lower-volume orders and manual assembly, while tape & reel (TR) packaging is optimized for automated pick-and-place assembly. Both contain identical die and electrical performance. Selection depends on manufacturing process requirements.

Q: Does the SP490EEN-L/TR have the same electrical performance as SP490EN-L? A: SP490EEN-L/TR maintains identical voltage supply range (4.75V ~ 5.25V), receiver hysteresis (70 mV), and operating temperature range (-40°C ~ 85°C). It offers improved data rate (10 Mbps vs. 5 Mbps) and is an active product with RoHS compliance.

Q: Are all substitute parts RoHS compliant? A: Yes. SP490EEN-L/TR is RoHS Compliant. All Analog Devices and Renesas substitutes are ROHS3 Compliant. The original SP490EN-L does not list RoHS status due to its obsolete classification.

Q: Can I substitute ADM488ARZ-REEL7 for SP490EN-L? A: ADM488ARZ-REEL7 is electrically compatible (RS422/RS485, 1/1 transceiver, full-duplex, 8-SOIC package) but operates at significantly reduced data rate (250 kbps vs. 5 Mbps). Use only if your application requires low-speed serial communication.

Q: What is the difference between ADM3490ARZ and ADM3490EARZ? A: Both are Analog Devices 3.3V RS422/RS485 transceivers in 8-SOIC packages with identical electrical specifications (10 Mbps, 50 mV hysteresis). The suffix variation indicates internal die revision or manufacturing process. Both are functionally equivalent for substitution purposes.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message