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SP3074EMN-L Equivalent & Substitute Parts
Part Overview
The SP3074EMN-L is a full-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This part operates at 3.3V supply voltage with a 500kbps data rate and supports operating temperatures from -40°C to 125°C. The SP3074EMN-L is classified as obsolete product status. Due to its obsolete classification, identifying functionally equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and system maintenance.
Substiute Parts
Key Parameters
| Parameter | SP3074EMN-L |
|---|---|
| Manufacturer | MaxLinear, Inc. |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Full |
| Receiver Hysteresis | 15 mV |
| Data Rate | 500kbps |
| Voltage - Supply | 3.3V |
| Operating Temperature | -40°C ~ 125°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the SP3074EMN-L is determined by the following critical parameters:
Primary Compatibility Criteria:
- Protocol: RS422/RS485 full-duplex transceiver
- Number of Drivers/Receivers: 1/1 configuration
- Package: 8-SOIC form factor
- Mounting Type: Surface Mount
- Voltage Supply Range: Compatible with 3.3V operation
- Data Rate: Minimum 500kbps capability
- Operating Temperature Range: Support for -40°C minimum and 125°C maximum
Substitution Categories:
Category 1 - Direct MaxLinear Equivalents (Same Manufacturer): SP3074EEN-L/TR maintains identical electrical specifications with active product status and tape & reel packaging. This part is the manufacturer-recommended direct replacement.
Category 2 - Analog Devices ADM3074 Series (500kbps Data Rate): ADM3074EYRZ, ADM3074EARZ, ADM3074EYRZ-REEL7, and ADM3074EARZ-REEL7 provide equivalent 500kbps data rate performance. These parts feature 100 mV receiver hysteresis (versus 15 mV on the original) and operate within 3V to 3.6V supply range. Operating temperature range is -40°C to 125°C or -40°C to 85°C depending on variant.
Category 3 - Analog Devices MAX3074 Series (500kbps Data Rate): MAX3074EASA+ delivers 500kbps performance with identical 1/1 transceiver configuration in 8-SOIC package, supporting 3V to 3.6V supply voltage and -40°C to 125°C operating range.
Category 4 - Lower Data Rate Alternatives (250kbps): ADM3071EARZ and ADM3071EARZ-REEL7 operate at 250kbps data rate, suitable only for applications not requiring 500kbps performance. These parts support 3V to 3.6V supply and -40°C to 85°C operating temperature.
Category 5 - High-Speed Alternatives (16Mbps): ADM3077EARZ and ADM3077EARZ-REEL7 provide 16Mbps data rate capability, exceeding the 500kbps requirement. These parts are suitable for applications requiring higher bandwidth within the same package and supply voltage constraints.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Protocol | Data Rate | Voltage Supply | Operating Temp | Receiver Hysteresis | Packaging |
|---|---|---|---|---|---|---|---|---|
| SP3074EMN-L | MaxLinear, Inc. | Obsolete | RS422, RS485 | 500kbps | 3.3V | -40°C ~ 125°C | 15 mV | 8-SOIC |
| SP3074EEN-L/TR | MaxLinear, Inc. | Active | RS422, RS485 | 500kbps | 3.3V | -40°C ~ 85°C | 15 mV | 8-SOIC (Tape & Reel) |
| ADM3074EYRZ | Analog Devices Inc. | Active | RS422, RS485 | 500kbps | 3V ~ 3.6V | -40°C ~ 125°C | 100 mV | 8-SOIC (Tube) |
| ADM3074EARZ | Analog Devices Inc. | Active | RS422, RS485 | 500kbps | 3V ~ 3.6V | -40°C ~ 85°C | 100 mV | 8-SOIC (Tube) |
| ADM3074EYRZ-REEL7 | Analog Devices Inc. | Active | RS422, RS485 | 500kbps | 3V ~ 3.6V | -40°C ~ 125°C | 100 mV | 8-SOIC (Cut Tape & Digi-Reel) |
| ADM3074EARZ-REEL7 | Analog Devices Inc. | Active | RS422, RS485 | 500kbps | 3V ~ 3.6V | -40°C ~ 85°C | 100 mV | 8-SOIC (Cut Tape & Digi-Reel) |
| MAX3074EASA+ | Analog Devices Inc./Maxim Integrated | Active | RS422, RS485 | 500kbps | 3V ~ 3.6V | -40°C ~ 125°C | 100 mV | 8-SOIC (Tube) |
| ADM3071EARZ | Analog Devices Inc. | Active | RS422, RS485 | 250kbps | 3V ~ 3.6V | -40°C ~ 85°C | 100 mV | 8-SOIC (Tube) |
| ADM3071EARZ-REEL7 | Analog Devices Inc. | Active | RS422, RS485 | 250kbps | 3V ~ 3.6V | -40°C ~ 85°C | 100 mV | 8-SOIC (Cut Tape & Digi-Reel) |
| ADM3077EARZ | Analog Devices Inc. | Active | RS422, RS485 | 16Mbps | 3V ~ 3.6V | -40°C ~ 85°C | 100 mV | 8-SOIC (Tube) |
| ADM3077EARZ-REEL7 | Analog Devices Inc. | Active | RS422, RS485 | 16Mbps | 3V ~ 3.6V | -40°C ~ 85°C | 100 mV | 8-SOIC (Cut Tape & Digi-Reel) |
Engineering Selection Recommendations
Primary Recommendation - SP3074EEN-L/TR: This MaxLinear part is the manufacturer-recommended direct replacement for the obsolete SP3074EMN-L. It maintains identical electrical specifications including 500kbps data rate, 3.3V supply voltage, and 15 mV receiver hysteresis. The part carries active product status with RoHS compliance. The only specification difference is the reduced upper operating temperature limit of 85°C versus the original 125°C. This part is suitable for applications where the original thermal specification is not critical.
Secondary Recommendation - ADM3074EYRZ or ADM3074EARZ: Analog Devices ADM3074 series parts provide 500kbps data rate performance in the same 8-SOIC package. ADM3074EYRZ supports the full -40°C to 125°C operating range matching the original part's thermal specification. ADM3074EARZ operates to 85°C. Both parts feature 100 mV receiver hysteresis and operate within 3V to 3.6V supply range. These parts carry ROHS3 compliance and active product status.
High-Speed Alternative - ADM3077EARZ or ADM3077EARZ-REEL7: For applications requiring higher data rate capability, ADM3077 series parts deliver 16Mbps performance while maintaining the same 8-SOIC package footprint and 3V to 3.6V supply voltage compatibility. These parts are suitable for designs where bandwidth requirements exceed 500kbps.
Lower Data Rate Alternative - ADM3071EARZ or ADM3071EARZ-REEL7: ADM3071 series parts operate at 250kbps data rate. These parts are suitable only for applications where the reduced data rate does not impact system performance.
Frequently Asked Questions (FAQ)
Q: Can I directly replace SP3074EMN-L with SP3074EEN-L/TR? A: Yes. SP3074EEN-L/TR is the manufacturer-recommended direct replacement. Both parts maintain identical electrical specifications for RS422/RS485 protocol, 500kbps data rate, and 15 mV receiver hysteresis. The primary difference is packaging (tape & reel versus bulk) and operating temperature range (85°C maximum versus 125°C maximum). Verify that your application does not require operation above 85°C.
Q: What is the difference between ADM3074EYRZ and ADM3074EARZ? A: Both parts are Analog Devices ADM3074 series transceivers with identical 500kbps data rate and 8-SOIC package. The primary difference is operating temperature range: ADM3074EYRZ supports -40°C to 125°C, while ADM3074EARZ supports -40°C to 85°C. Select ADM3074EYRZ if your application requires the extended upper temperature specification.
Q: Why do substitute parts show 100 mV receiver hysteresis instead of 15 mV? A: Receiver hysteresis is a design parameter that differs between manufacturers. The 100 mV hysteresis on Analog Devices parts is higher than the 15 mV on the original MaxLinear part. This affects noise immunity and signal detection thresholds. Verify that your circuit design accommodates this specification difference.
Q: Can I use ADM3077EARZ as a substitute for SP3074EMN-L? A: ADM3077EARZ is functionally compatible in terms of package, protocol, and supply voltage. However, it operates at 16Mbps data rate, significantly exceeding the 500kbps requirement of the original part. Use this part only if your application can benefit from higher bandwidth capability. Operating temperature range is -40°C to 85°C.
Q: Are all substitute parts RoHS compliant? A: Yes. All active substitute parts listed carry RoHS3 compliance certification. The original SP3074EMN-L does not specify RoHS status due to its obsolete classification.
Q: What packaging options are available for substitute parts? A: Substitute parts are available in multiple packaging formats: Tube (standard packaging), Tape & Reel (TR) for automated assembly, and Cut Tape & Digi-Reel (CT) for mixed-volume orders. Select packaging based on your production volume and assembly process requirements.
Q: Can I use ADM3071EARZ as a substitute? A: ADM3071EARZ is compatible with the 8-SOIC package and RS422/RS485 protocol. However, it operates at 250kbps data rate, half the 500kbps specification of the original part. Use this part only if your application does not require 500kbps performance.
Q: What is the supply voltage compatibility range for substitute parts? A: The original SP3074EMN-L operates at 3.3V. Most Analog Devices substitutes operate within 3V to 3.6V range, which includes 3.3V operation. Verify that your power supply can maintain voltage within this range under all operating conditions.
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