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SP1485EEN-L Equivalent & Substitute Parts
Part Overview
The SP1485EEN-L is a half-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This component is classified as discontinued at DiGi Electronics, making equivalent substitute parts essential for ongoing design support and production continuity. The part operates within a 4.75V to 5.25V supply range with a 20 Mbps data rate and supports industrial temperature ranges from -40°C to 85°C.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SP1485EEN-L |
| Manufacturer | MaxLinear, Inc. |
| Category | Interface |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Half |
| Data Rate | 20 Mbps |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Discontinued at DiGi Electronics |
Substitute Part Grouping Explanation
Substitution eligibility for the SP1485EEN-L is determined by the following critical parameters:
- Protocol compatibility: RS422/RS485 half-duplex operation
- Package type: 8-SOIC surface mount form factor
- Supply voltage range: 4.75V to 5.25V (5V nominal operation)
- Operating temperature range: -40°C to 85°C industrial grade
- Duplex configuration: Half-duplex transceiver with 1 driver and 1 receiver
Substitute parts must maintain compatibility across these core electrical and mechanical specifications. Parts with different supply voltage ranges, operating temperature limits, or package configurations are classified as non-equivalent and listed separately for reference only.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Data Rate | Supply Voltage | Operating Temp | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| SP1485EEN-L | MaxLinear, Inc. | RS422, RS485 | 1/1 | 20 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Discontinued | RoHS Compliant |
| ADM1485ARZ | Analog Devices Inc. | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1485ARZ-REEL | Analog Devices Inc. | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1485ARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1485JRZ | Analog Devices Inc. | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1485JRZ-REEL | Analog Devices Inc. | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1486ARZ | Analog Devices Inc. | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1486ARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For applications requiring full compatibility with the SP1485EEN-L operating envelope, the ADM1485ARZ, ADM1485ARZ-REEL, and ADM1485ARZ-REEL7 variants are primary substitutes. These parts maintain identical supply voltage ranges (4.75V to 5.25V) and industrial temperature ratings (-40°C to 85°C), with enhanced data rate performance at 30 Mbps. All Analog Devices variants carry ROHS3 compliance certification and active product status, ensuring long-term availability and supply chain stability.
The ADM1485JRZ and ADM1485JRZ-REEL variants operate within a narrower temperature range (0°C to 70°C) and are suitable only for applications not requiring the full -40°C to 85°C industrial temperature specification.
The ADM1486ARZ and ADM1486ARZ-REEL7 variants provide equivalent electrical performance with full industrial temperature support and represent alternative sourcing options within the Analog Devices RS485 transceiver portfolio.
Frequently Asked Questions (FAQ)
Q: Can ADM1485JRZ be used as a direct replacement for SP1485EEN-L in all applications?
A: The ADM1485JRZ is electrically compatible but operates within a restricted temperature range of 0°C to 70°C, compared to the SP1485EEN-L's -40°C to 85°C range. Use this part only in applications where the narrower temperature specification is acceptable.
Q: What is the difference between ADM1485ARZ, ADM1485ARZ-REEL, and ADM1485ARZ-REEL7?
A: These part numbers represent the same die and electrical specifications but differ in packaging and tape configuration. ADM1485ARZ is supplied in tube packaging, while ADM1485ARZ-REEL and ADM1485ARZ-REEL7 are supplied on cut tape with Digi-Reel configurations. Select based on your procurement and assembly requirements.
Q: Is the 8-SOIC package identical across all substitute parts?
A: Yes. All listed substitute parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical pin compatibility with the SP1485EEN-L.
Q: What is the significance of the higher 30 Mbps data rate in ADM1485 and ADM1486 variants?
A: The ADM1485 and ADM1486 series support 30 Mbps operation, exceeding the SP1485EEN-L's 20 Mbps specification. This enhanced performance is backward compatible and does not affect operation at lower data rates.
Q: Are all substitute parts RoHS compliant?
A: Yes. All listed Analog Devices substitute parts carry ROHS3 compliance certification, meeting current environmental and regulatory requirements.
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