SP3497EEN-L RS422/RS485 Transceiver Equivalent & Substitute Parts

Part Overview

The SP3497EEN-L is a 1/1 full-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in a 14-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a 3V to 3.6V supply range with a 32Mbps data rate and is suitable for industrial communication applications requiring RS422 or RS485 protocol support.

Key Parameters

Parameter	SP3497EEN-L
Manufacturer	MaxLinear, Inc.
Product Status	Obsolete
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Full
Receiver Hysteresis	25 mV
Data Rate	32Mbps
Voltage - Supply	3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution for the SP3497EEN-L is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS422/RS485 full-duplex operation
Number of Drivers/Receivers: 1/1 configuration
Package: 14-SOIC form factor
Voltage Supply Range: 3V ~ 3.6V compatibility
Mounting Type: Surface mount

Acceptable Variation Parameters:

Data Rate: Substitute parts may exceed the 32Mbps specification of the original part
Receiver Hysteresis: Substitute parts may differ from the 25 mV specification
Operating Temperature: Substitute parts may extend the upper temperature limit beyond 85°C
Product Status: Active parts are preferred over obsolete parts for design continuity
RoHS/REACH Compliance: Modern substitutes include compliance certifications

All substitute parts listed maintain the identical package footprint, pin configuration, and core RS422/RS485 transceiver functionality required for direct replacement.

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Receiver Hysteresis	Operating Temperature	Packaging	RoHS Status
SP3497EEN-L	MaxLinear, Inc.	Obsolete	32Mbps	25 mV	-40°C ~ 85°C	Tube	Not specified
ISL3180EIBZ	Renesas Electronics Corporation	Active	40Mbps	28 mV	-40°C ~ 85°C	Tube	ROHS3 Compliant
ADM3070EARZ	Analog Devices Inc.	Active	250kbps	100 mV	-40°C ~ 85°C	Tube	ROHS3 Compliant
ADM3070EARZ-REEL7	Analog Devices Inc.	Active	250kbps	100 mV	-40°C ~ 85°C	Tape & Reel (TR)	ROHS3 Compliant
ADM3070EYRZ	Analog Devices Inc.	Active	250kbps	100 mV	-40°C ~ 125°C	Tube	ROHS3 Compliant
ADM3070EYRZ-REEL7	Analog Devices Inc.	Active	250kbps	100 mV	-40°C ~ 125°C	Tape & Reel (TR)	ROHS3 Compliant
ADM3073EARZ	Analog Devices Inc.	Active	500kbps	100 mV	-40°C ~ 85°C	Tube	ROHS3 Compliant
ADM3073EARZ-REEL7	Analog Devices Inc.	Active	500kbps	100 mV	-40°C ~ 85°C	Tape & Reel (TR)	ROHS3 Compliant
ADM3076EARZ	Analog Devices Inc.	Active	16Mbps	100 mV	-40°C ~ 85°C	Tube	ROHS3 Compliant
ADM3076EARZ-REEL7	Analog Devices Inc.	Active	16Mbps	100 mV	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	ROHS3 Compliant
ADM3076EYRZ	Analog Devices Inc.	Active	16Mbps	100 mV	-40°C ~ 125°C	Tube	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Enhanced Performance: The ISL3180EIBZ from Renesas Electronics Corporation is the closest functional equivalent, offering a 40Mbps data rate that exceeds the original SP3497EEN-L specification while maintaining identical operating temperature range and supply voltage compatibility. This part is active in production and ROHS3 compliant, providing design continuity with modern compliance certifications.

For Extended Temperature Range Applications: The ADM3070EYRZ and ADM3070EYRZ-REEL7 variants from Analog Devices Inc. extend the operating temperature range to -40°C ~ 125°C, suitable for industrial environments requiring enhanced thermal performance. Both variants are ROHS3 compliant and available in active production status.

For High-Speed Applications: The ADM3076EARZ and ADM3076EARZ-REEL7 provide 16Mbps data rate capability with ROHS3 compliance and active product status. The ADM3076EYRZ variant offers the same 16Mbps performance with extended temperature range to 125°C.

For Lower Data Rate Applications: The ADM3073EARZ and ADM3073EARZ-REEL7 support 500kbps operation, and the ADM3070 series supports 250kbps operation. These options are suitable for applications where the original 32Mbps specification exceeds system requirements.

All recommended substitutes maintain the 14-SOIC package footprint, 1/1 driver/receiver configuration, and full-duplex RS422/RS485 protocol support required for direct PCB replacement.

Frequently Asked Questions (FAQ)

Q: Can the ISL3180EIBZ directly replace the SP3497EEN-L without PCB modifications? A: Yes. The ISL3180EIBZ maintains the identical 14-SOIC package footprint, pin configuration, and electrical interface specifications. No PCB layout changes are required for direct substitution.

Q: What is the primary difference between ADM3070 and ADM3076 variants? A: The ADM3076 series supports 16Mbps data rate, while the ADM3070 series supports 250kbps. Both maintain identical package, supply voltage, and operating temperature specifications. Selection depends on the required data rate for your application.

Q: Are all substitute parts ROHS3 compliant? A: All listed substitute parts from Renesas Electronics and Analog Devices are ROHS3 compliant. The original SP3497EEN-L does not specify RoHS compliance status.

Q: What is the difference between tube and tape & reel packaging options? A: Tube packaging is suitable for lower-volume applications and manual assembly. Tape & reel packaging is optimized for high-volume automated pick-and-place assembly. Both packaging formats contain identical die and electrical specifications.

Q: Can I use ADM3070EYRZ in place of ADM3070EARZ? A: Yes, with the consideration that ADM3070EYRZ extends the operating temperature range to -40°C ~ 125°C compared to -40°C ~ 85°C for ADM3070EARZ. Both parts are otherwise electrically identical and pin-compatible.

Q: Why does the SP3497EEN-L show obsolete status? A: Obsolete status indicates the part is no longer manufactured by MaxLinear, Inc. Active substitute parts from Renesas Electronics and Analog Devices provide equivalent functionality with ongoing production support and modern compliance certifications.

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