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SP483ECP-L Equivalent & Substitute Parts
Part Overview
The SP483ECP-L is a 1/1 half-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in an 8-PDIP through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support, redesigns, and new production runs. Substitute parts maintain core RS422/RS485 transceiver functionality while offering improved specifications, active product status, and enhanced temperature operating ranges.
Substiute Parts
Key Parameters
| Parameter | SP483ECP-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 | 0°C ~ 70°C |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Receiver Hysteresis | 20 mV |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitute parts are grouped based on the following substitution criteria:
Primary Substitution Criteria:
- Protocol: RS422/RS485 half-duplex transceiver
- Package: 8-DIP through-hole (0.300", 7.62mm)
- Voltage Supply: 4.75V ~ 5.25V
- Number of Drivers/Receivers: 1/1 configuration
- Mounting Type: Through Hole
Secondary Compatibility Factors:
- Data Rate: Equal to or greater than 250 kbps
- Receiver Hysteresis: 20 mV to 70 mV range
- Operating Temperature: Minimum 0°C to 70°C coverage
- Product Status: Active (preferred for new designs)
- RoHS Compliance: ROHS3 Compliant
Substitutes are classified into three categories:
- Direct Manufacturer Upgrade – Same manufacturer (MaxLinear) with improved package form factor or specifications
- Cross-Manufacturer Direct Substitutes – Alternative manufacturers with identical or superior electrical characteristics
- Cross-Manufacturer Enhanced Substitutes – Higher performance alternatives with extended temperature ranges or increased data rates
Parameter Comparison
| Part Number | Manufacturer | Package | Data Rate | Receiver Hysteresis | Operating Temp | Voltage Supply | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| SP483ECP-L | MaxLinear, Inc. | 8-DIP | 250 kbps | 20 mV | 0°C ~ 70°C | 4.75V ~ 5.25V | Obsolete | — |
| SP483ECN-L/TR | MaxLinear, Inc. | 8-SOIC | 250 kbps | 20 mV | -40°C ~ 85°C | 4.75V ~ 5.25V | Active | ROHS3 Compliant |
| LTC1481CN8#PBF | Analog Devices Inc. | 8-DIP | 2.5 Mbps | 45 mV | 0°C ~ 70°C | 4.75V ~ 5.25V | Active | ROHS3 Compliant |
| LTC1481IN8#PBF | Analog Devices Inc. | 8-DIP | 2.5 Mbps | 45 mV | -40°C ~ 85°C | 4.75V ~ 5.25V | Active | ROHS3 Compliant |
| ADM1485ANZ | Analog Devices Inc. | 8-DIP | 30 Mbps | 70 mV | -40°C ~ 85°C | 4.75V ~ 5.25V | Active | ROHS3 Compliant |
| ADM1485JNZ | Analog Devices Inc. | 8-DIP | 30 Mbps | 70 mV | 0°C ~ 70°C | 4.75V ~ 5.25V | Active | ROHS3 Compliant |
| ADM485ANZ | Analog Devices Inc. | 8-DIP | 5 Mbps | 70 mV | -40°C ~ 85°C | 4.75V ~ 5.25V | Active | ROHS3 Compliant |
| ADM485JNZ | Analog Devices Inc. | 8-DIP | 5 Mbps | 70 mV | 0°C ~ 70°C | 4.75V ~ 5.25V | Active | ROHS3 Compliant |
| ISL81487EIPZ | Renesas Electronics Corporation | 8-DIP | 5 Mbps | 70 mV | -40°C ~ 85°C | 4.5V ~ 5.5V | Active | ROHS3 Compliant |
| ISL81487LIPZ | Renesas Electronics Corporation | 8-DIP | 250 kbps | 70 mV | -40°C ~ 85°C | 4.5V ~ 5.5V | Active | ROHS3 Compliant |
| LT1785AHN8#PBF | Analog Devices Inc. | 8-DIP | 250 kbps | 20 mV | -40°C ~ 125°C | 4.75V ~ 5.25V | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct Pin-Compatible Replacement (Through-Hole 8-DIP):
LTC1481CN8#PBF and LTC1481IN8#PBF (Analog Devices Inc.) provide direct 8-DIP package compatibility with the SP483ECP-L. Both parts maintain RS422/RS485 half-duplex operation and 4.75V ~ 5.25V supply voltage. LTC1481IN8#PBF extends the operating temperature range to -40°C ~ 85°C and is recommended for applications requiring wider temperature coverage. Both parts are ROHS3 compliant and carry active product status.
For Extended Temperature Range Applications:
LT1785AHN8#PBF (Analog Devices Inc.) offers the widest operating temperature range (-40°C ~ 125°C) while maintaining the original 250 kbps data rate and 20 mV receiver hysteresis. This part is suitable for industrial and automotive environments requiring enhanced thermal performance.
For Higher Data Rate Requirements:
ADM1485ANZ and ADM485ANZ (Analog Devices Inc.) provide increased data rates (30 Mbps and 5 Mbps respectively) while maintaining 8-DIP through-hole packaging and 4.75V ~ 5.25V supply voltage. ADM1485ANZ supports -40°C ~ 85°C operation; ADM485ANZ is available in both temperature grades.
For Voltage Supply Tolerance:
ISL81487EIPZ and ISL81487LIPZ (Renesas Electronics Corporation) accept a wider supply voltage range (4.5V ~ 5.5V) compared to the SP483ECP-L specification. ISL81487LIPZ maintains the original 250 kbps data rate; ISL81487EIPZ supports 5 Mbps operation.
For Surface Mount Redesigns:
SP483ECN-L/TR (MaxLinear, Inc.) is the manufacturer's recommended upgrade, offering the same electrical characteristics as the SP483ECP-L in an 8-SOIC surface-mount package with extended temperature range (-40°C ~ 85°C) and active product status.
Frequently Asked Questions (FAQ)
Q: Can I use LTC1481IN8#PBF as a direct replacement for SP483ECP-L in existing through-hole PCB designs?
A: Yes. LTC1481IN8#PBF is housed in an 8-DIP package with identical pin spacing (0.300", 7.62mm) and maintains RS422/RS485 half-duplex operation at 4.75V ~ 5.25V supply voltage. Pin-level compatibility is maintained. The higher data rate (2.5 Mbps vs. 250 kbps) and extended temperature range (-40°C ~ 85°C) are backward compatible with SP483ECP-L applications.
Q: What is the difference between ADM1485ANZ and ADM485ANZ?
A: Both parts are Analog Devices Inc. RS422/RS485 half-duplex transceivers in 8-DIP packages with 4.75V ~ 5.25V supply voltage. ADM1485ANZ supports 30 Mbps data rate; ADM485ANZ supports 5 Mbps. Both are available in temperature grades covering 0°C ~ 70°C (JNZ suffix) or -40°C ~ 85°C (ANZ suffix). Selection depends on required data rate and operating temperature range.
Q: Why does SP483ECN-L/TR have a different package than SP483ECP-L?
A: SP483ECN-L/TR is the manufacturer's active product upgrade, transitioning from through-hole 8-DIP to surface-mount 8-SOIC packaging. This reflects modern manufacturing practices and PCB assembly standards. Electrical specifications remain equivalent. Use SP483ECN-L/TR for new designs; use LTC1481IN8#PBF or LT1785AHN8#PBF for through-hole PCB compatibility.
Q: Is LT1785AHN8#PBF suitable for high-temperature industrial applications?
A: Yes. LT1785AHN8#PBF operates from -40°C ~ 125°C, providing the widest temperature coverage among available substitutes. It maintains 250 kbps data rate and 20 mV receiver hysteresis identical to SP483ECP-L, with ROHS3 compliance and active product status.
Q: Can I use ISL81487EIPZ if my power supply is 4.5V?
A: Yes. ISL81487EIPZ accepts 4.5V ~ 5.5V supply voltage, which is wider than the SP483ECP-L specification (4.75V ~ 5.25V). This part is suitable for systems with relaxed supply voltage tolerances. It supports 5 Mbps data rate and -40°C ~ 85°C operation.
Q: What is the primary reason to select a substitute part over the obsolete SP483ECP-L?
A: The SP483ECP-L is classified as obsolete, meaning MaxLinear, Inc. no longer manufactures or supports this part. Substitute parts provide active product status, ensuring long-term availability, manufacturer support, and compliance with current RoHS standards. All recommended substitutes are ROHS3 compliant and actively produced.
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