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SP3078EMN-L Equivalent & Substitute Parts
Part Overview
The SP3078EMN-L is a half-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This device operates at 3.3V supply voltage with a 16 Mbps data rate and supports operating temperatures from -40°C to 125°C. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring this functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SP3078EMN-L |
| Manufacturer | MaxLinear, Inc. |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Duplex Configuration | Half |
| Number of Drivers/Receivers | 1/1 |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Voltage - Supply | 3.3V |
| Data Rate | 16 Mbps |
| Operating Temperature Range | -40°C to 125°C |
| Receiver Hysteresis | 15 mV |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the SP3078EMN-L is determined by the following critical parameters:
Primary Compatibility Criteria:
- Protocol: RS422/RS485 half-duplex transceiver
- Package: 8-SOIC surface mount form factor
- Number of Drivers/Receivers: 1/1 configuration
- Mounting Type: Surface mount
Secondary Compatibility Criteria:
- Voltage Supply Range: Must accommodate 3.3V operation
- Data Rate: Minimum 16 Mbps required for equivalent functionality
- Operating Temperature: Extended range (-40°C to 125°C) preferred for full compatibility
- Receiver Hysteresis: Acceptable range 15 mV to 100 mV
Substitute parts are grouped into two categories:
Category 1 - Direct MaxLinear Equivalents: SP3078EEN-L/TR maintains identical electrical specifications with active product status and improved availability.
Category 2 - Cross-Manufacturer Alternatives: ADM3078 and MAX3078 series from Analog Devices Inc./Maxim Integrated provide equivalent 16 Mbps performance with compatible supply voltage ranges and extended temperature operation.
Category 3 - Lower Data Rate Alternatives: ADM3072 and ADM3075 series offer reduced data rates (250 kbps and 500 kbps respectively) suitable only for applications not requiring 16 Mbps performance.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Duplex | Drivers/Receivers | Package | Voltage Supply | Data Rate | Operating Temp | Receiver Hysteresis | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|
| SP3078EMN-L | MaxLinear, Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3.3V | 16 Mbps | -40°C to 125°C | 15 mV | Obsolete |
| SP3078EEN-L/TR | MaxLinear, Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3.3V | 16 Mbps | -40°C to 85°C | 15 mV | Active |
| ADM3078EYRZ | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V to 3.6V | 16 Mbps | -40°C to 125°C | 100 mV | Active |
| ADM3078EYRZ-REEL7 | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V to 3.6V | 16 Mbps | -40°C to 125°C | 100 mV | Active |
| MAX3078EASA+ | Analog Devices Inc./Maxim Integrated | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V to 3.6V | 16 Mbps | -40°C to 125°C | 100 mV | Active |
| MAX3078EASA+T | Analog Devices Inc./Maxim Integrated | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V to 3.6V | 16 Mbps | -40°C to 125°C | 100 mV | Active |
| ADM3072EARZ | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V to 3.6V | 250 kbps | -40°C to 85°C | 100 mV | Active |
| ADM3072EARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V to 3.6V | 250 kbps | -40°C to 85°C | 100 mV | Active |
| ADM3072EYRZ | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V to 3.6V | 250 kbps | -40°C to 125°C | 100 mV | Active |
| ADM3072EYRZ-REEL7 | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V to 3.6V | 250 kbps | -40°C to 125°C | 100 mV | Active |
| ADM3075EARZ | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V to 3.6V | 500 kbps | -40°C to 85°C | 100 mV | Active |
Engineering Selection Recommendations
For Direct Replacement (Preferred): SP3078EEN-L/TR is the primary substitute, offering active product status and identical electrical specifications. The operating temperature range is reduced to -40°C to 85°C; verify this meets application requirements before selection. This part maintains MaxLinear manufacturing continuity and is available in higher quantities (35,395 units in stock).
For Cross-Manufacturer Substitution (16 Mbps Requirement): ADM3078EYRZ, ADM3078EYRZ-REEL7, MAX3078EASA+, and MAX3078EASA+T are functionally equivalent at 16 Mbps data rate. These parts feature:
- Extended operating temperature to 125°C (ADM3078 and MAX3078 variants)
- Wider supply voltage range (3V to 3.6V) accommodating 3.3V operation
- ROHS3 compliance and REACH unaffected status
- Higher receiver hysteresis (100 mV) acceptable for RS422/RS485 applications
MAX3078EASA+T offers the highest inventory availability (999,200 units) with Cut Tape & Digi-Reel packaging.
For Lower Data Rate Applications Only: ADM3072 and ADM3075 series are suitable only when application data rates do not exceed 250 kbps (ADM3072) or 500 kbps (ADM3075). These parts are not equivalent substitutes for 16 Mbps operation.
Frequently Asked Questions (FAQ)
Q: Can I use ADM3072EYRZ-REEL7 as a direct replacement for SP3078EMN-L?
A: No. The ADM3072 series operates at a maximum data rate of 250 kbps, while the SP3078EMN-L supports 16 Mbps. Use ADM3072 only if your application requires data rates at or below 250 kbps.
Q: What is the difference between SP3078EEN-L/TR and SP3078EMN-L?
A: Both are MaxLinear RS422/RS485 half-duplex transceivers in 8-SOIC packages with identical electrical specifications. The primary difference is product status: SP3078EMN-L is obsolete while SP3078EEN-L/TR is active. The operating temperature range differs: SP3078EEN-L/TR operates -40°C to 85°C versus -40°C to 125°C for SP3078EMN-L. Verify temperature requirements before substitution.
Q: Are MAX3078EASA+ and MAX3078EASA+T interchangeable?
A: Both parts are electrically identical MAX3078 transceivers from Analog Devices Inc./Maxim Integrated. The difference is packaging: MAX3078EASA+ is supplied in Tube packaging, while MAX3078EASA+T is supplied in Cut Tape & Digi-Reel format. Select based on your procurement and assembly requirements.
Q: What does the receiver hysteresis difference (15 mV vs. 100 mV) mean for substitution?
A: Receiver hysteresis affects noise immunity in RS422/RS485 bus environments. The SP3078EMN-L has 15 mV hysteresis, while most substitutes (ADM3078, MAX3078, ADM3072, ADM3075) have 100 mV hysteresis. Higher hysteresis provides greater noise immunity. This difference is acceptable for standard RS422/RS485 applications; verify for noise-sensitive environments.
Q: Can I substitute SP3078EMN-L with ADM3078EYRZ if my supply voltage is exactly 3.3V?
A: Yes. The ADM3078EYRZ supply voltage range is 3V to 3.6V, which includes 3.3V operation. Verify that your circuit design does not require the exact 3.3V specification of the original part.
Q: What packaging options are available for 16 Mbps RS422/RS485 substitutes?
A: For 16 Mbps equivalents, packaging options include Tube (ADM3078EYRZ, MAX3078EASA+), Cut Tape & Digi-Reel (SP3078EEN-L/TR, MAX3078EASA+T), and Tape & Reel formats. Select based on your assembly process and volume requirements.
Q: Are all substitute parts RoHS compliant?
A: SP3078EEN-L/TR compliance status is not specified in the provided data. ADM3078, MAX3078, ADM3072, and ADM3075 series are ROHS3 compliant. Verify RoHS requirements for your application before final part selection.
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