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SP483EN-L Equivalent & Substitute Parts
Part Overview
The SP483EN-L is a half-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This component operates at 4.75V to 5.25V with a 250 kbps data rate and supports industrial temperature ranges from -40°C to 85°C. The part is currently obsolete, making equivalent substitutes necessary for new designs, repairs, and production continuity.
Substiute Parts
Key Parameters
| Parameter | SP483EN-L |
|---|---|
| Manufacturer | MaxLinear, Inc. |
| Type | Transceiver Half 1/1 |
| Protocol | RS422, RS485 |
| Duplex | Half |
| Data Rate | 250 kbps |
| Voltage Supply | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C |
| Receiver Hysteresis | 10 mV |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the SP483EN-L is determined by the following critical parameters:
- Package Compatibility: 8-SOIC form factor (0.154", 3.90mm Width) for direct PCB replacement
- Protocol Support: RS422/RS485 half-duplex transceiver functionality
- Driver/Receiver Configuration: 1/1 (one driver, one receiver)
- Data Rate: 250 kbps minimum
- Operating Temperature Range: -40°C to 85°C industrial range
- Supply Voltage: Acceptable ranges include 4.75V–5.25V (original), 4.5V–5.5V (extended), or 3V–3.6V (low-voltage variants)
- Mounting Type: Surface mount only
Substitute parts are grouped into two categories based on supply voltage compatibility:
Group 1: 5V Supply Voltage (4.75V–5.25V or 4.5V–5.5V)
- ADM483ARZ, ADM483EARZ, ADM483EARZ-REEL, ADM483JRZ
- ISL81483IBZ, ISL81483IBZ-T
Group 2: 3V Supply Voltage (3V–3.6V)
- ADM3483ARZ, ADM3483ARZ-REEL7, ADM3483EARZ, ADM3483EARZ-REEL7
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Data Rate | Supply Voltage | Temp Range | Receiver Hysteresis | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| SP483EN-L | MaxLinear, Inc. | RS422, RS485 | 1/1 | 250 kbps | 4.75V–5.25V | -40°C–85°C | 10 mV | 8-SOIC | Obsolete | N/A |
| ADM3483ARZ | Analog Devices Inc. | RS422, RS485 | 1/1 | 250 kbps | 3V–3.6V | -40°C–85°C | 50 mV | 8-SOIC | Active | ROHS3 Compliant |
| ADM3483ARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | 1/1 | 250 kbps | 3V–3.6V | -40°C–85°C | 50 mV | 8-SOIC | Active | ROHS3 Compliant |
| ADM3483EARZ | Analog Devices Inc. | RS422, RS485 | 1/1 | 250 kbps | 3V–3.6V | -40°C–85°C | 50 mV | 8-SOIC | Active | ROHS3 Compliant |
| ADM3483EARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | 1/1 | 250 kbps | 3V–3.6V | -40°C–85°C | 50 mV | 8-SOIC | Active | ROHS3 Compliant |
| ADM483ARZ | Analog Devices Inc. | RS422, RS485 | 1/1 | 250 kbps | 4.75V–5.25V | -40°C–85°C | 70 mV | 8-SOIC | Active | ROHS3 Compliant |
| ADM483EARZ | Analog Devices Inc. | RS422, RS485 | 1/1 | 250 kbps | 4.5V–5.5V | -40°C–85°C | 70 mV | 8-SOIC | Active | ROHS3 Compliant |
| ADM483EARZ-REEL | Analog Devices Inc. | RS422, RS485 | 1/1 | 250 kbps | 4.5V–5.5V | -40°C–85°C | 70 mV | 8-SOIC | Active | ROHS3 Compliant |
| ADM483JRZ | Analog Devices Inc. | RS422, RS485 | 1/1 | 250 kbps | 4.75V–5.25V | 0°C–70°C | 70 mV | 8-SOIC | Active | ROHS3 Compliant |
| ISL81483IBZ | Renesas Electronics Corporation | RS422, RS485 | 1/1 | 250 kbps | 4.5V–5.5V | -40°C–85°C | 70 mV | 8-SOIC | Active | ROHS3 Compliant |
| ISL81483IBZ-T | Renesas Electronics Corporation | RS422, RS485 | 1/1 | 250 kbps | 4.5V–5.5V | -40°C–85°C | 70 mV | 8-SOIC | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For 5V Supply Systems (Direct Voltage Compatibility)
ADM483ARZ, ADM483EARZ, ADM483EARZ-REEL, ISL81483IBZ, and ISL81483IBZ-T are primary substitutes for the SP483EN-L in 5V applications. All are active products with ROHS3 compliance and full industrial temperature range support (-40°C to 85°C). ADM483EARZ-REEL and ISL81483IBZ-T offer tape & reel packaging for high-volume production. ADM483JRZ is suitable only for commercial temperature range applications (0°C to 70°C).
For 3V Supply Systems (Voltage Adaptation Required)
ADM3483ARZ, ADM3483ARZ-REEL7, ADM3483EARZ, and ADM3483EARZ-REEL7 operate at 3V–3.6V and require circuit redesign if the original 5V supply cannot be modified. These parts maintain full industrial temperature range and ROHS3 compliance.
Packaging Considerations
Tube packaging (standard) is suitable for low-volume and prototype applications. Cut Tape & Digi-Reel and Tape & Reel packaging are optimized for automated assembly and high-volume production.
Frequently Asked Questions (FAQ)
Q: Can I use a 3V substitute (ADM3483 series) in a 5V circuit?
A: No. The ADM3483 series operates at 3V–3.6V and is not compatible with 5V supply circuits. Use 5V-rated substitutes (ADM483 or ISL81483 series) for direct replacement.
Q: What is the difference between ADM483ARZ and ADM483EARZ?
A: Both support 5V operation and full industrial temperature range. ADM483EARZ has an extended supply voltage range (4.5V–5.5V) compared to ADM483ARZ (4.75V–5.25V), providing greater tolerance margin.
Q: Is ADM483JRZ a suitable replacement for the SP483EN-L?
A: ADM483JRZ is electrically compatible but operates only at commercial temperature range (0°C–70°C) versus the industrial range (-40°C–85°C) of the SP483EN-L. Use only if your application does not require full industrial temperature support.
Q: What is the difference between tube and tape & reel packaging?
A: Tube packaging is standard for manual handling and low-volume orders. Tape & reel packaging is designed for automated pick-and-place assembly and high-volume production. Both contain identical components.
Q: Why does the SP483EN-L have 10 mV receiver hysteresis while substitutes have 50–70 mV?
A: Receiver hysteresis is a design parameter that affects noise immunity. Higher hysteresis (50–70 mV) provides greater noise rejection but may reduce sensitivity to weak signals. Both values meet RS422/RS485 specifications and are functionally compatible for standard applications.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All active substitute parts listed are ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements.
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