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MAX3490EESA Equivalent & Substitute Parts
Part Overview
The MAX3490EESA is a 1/1 full-duplex RS422/RS485 transceiver IC manufactured by Analog Devices Inc./Maxim Integrated in 8-SOIC surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The device operates across a 3V to 3.6V supply range with a 10Mbps data rate and -40°C to 85°C temperature range, suitable for industrial communication applications requiring reliable serial interface functionality.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Manufacturer Part Number | MAX3490EESA |
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Full |
| Receiver Hysteresis | 50 mV |
| Data Rate | 10Mbps |
| Voltage - Supply | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the MAX3490EESA is determined by strict adherence to the following critical parameters:
Primary Substitution Criteria:
- Protocol: RS422/RS485 full-duplex operation
- Number of Drivers/Receivers: 1/1 configuration
- Duplex Mode: Full-duplex
- Voltage Supply Range: 3V ~ 3.6V
- Operating Temperature Range: -40°C ~ 85°C
- Package Type: 8-SOIC surface mount
- Receiver Hysteresis: 50 mV
- Data Rate: 10Mbps minimum
Grouping Logic:
Group 1 - Parametric Equivalents (MAX3490 Series): Parts MAX3490EESA+ and MAX3490ESA+ match all electrical and mechanical parameters identically. These represent active product variants with identical specifications but different packaging configurations (Tube packaging). These are direct functional replacements with no performance trade-offs.
Group 2 - Manufacturer Recommended Substitutes (ADM3488 Series): Parts ADM3488ARZ, ADM3488ARZ-REEL7, ADM3488EARZ, and ADM3488EARZ-REEL7 maintain identical electrical parameters except for data rate (250kbps vs. 10Mbps). These are suitable for applications where the lower data rate specification is acceptable. All other parameters including supply voltage, temperature range, package, and hysteresis remain identical.
Group 3 - Manufacturer Recommended Substitutes (ADM3490 Series): Parts ADM3490ARZ-REEL7 and ADM3490EARZ-REEL7 are full parametric equivalents with identical specifications to the main part. These differ only in packaging format (Cut Tape & Digi-Reel vs. standard tube).
Group 4 - Manufacturer Recommended Substitutes (ISL83 Series): Parts ISL83077EIBZA and ISL83490IBZ-T are from Renesas Electronics Corporation. ISL83077EIBZA operates at 20Mbps with 15 mV hysteresis and MSL-3 rating. ISL83490IBZ-T matches all parameters identically to the main part. Both maintain the required 3V-3.6V supply and -40°C to 85°C temperature range in 8-SOIC packaging.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Protocol | Data Rate | Receiver Hysteresis | Voltage - Supply | Operating Temperature | Package / Case | Product Status | Packaging Type |
|---|---|---|---|---|---|---|---|---|---|
| MAX3490EESA | Analog Devices Inc./Maxim Integrated | RS422, RS485 | 10Mbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Obsolete | Tube |
| MAX3490EESA+ | Analog Devices Inc./Maxim Integrated | RS422, RS485 | 10Mbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Tube |
| MAX3490ESA+ | Analog Devices Inc./Maxim Integrated | RS422, RS485 | 10Mbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Tube |
| ADM3488ARZ | Analog Devices Inc. | RS422, RS485 | 250kbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Tube |
| ADM3488ARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | 250kbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Cut Tape (CT) & Digi-Reel® |
| ADM3488EARZ | Analog Devices Inc. | RS422, RS485 | 250kbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Tube |
| ADM3488EARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | 250kbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Tape & Reel (TR) |
| ADM3490ARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | 10Mbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Cut Tape (CT) & Digi-Reel® |
| ADM3490EARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | 10Mbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Cut Tape (CT) & Digi-Reel® |
| ISL83077EIBZA | Renesas Electronics Corporation | RS422, RS485 | 20Mbps | 15 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Tube |
| ISL83490IBZ-T | Renesas Electronics Corporation | RS422, RS485 | 10Mbps | 50 mV | 3V ~ 3.6V | -40°C ~ 85°C | 8-SOIC (0.154", 3.90mm Width) | Active | Cut Tape (CT) & Digi-Reel® |
Engineering Selection Recommendations
For Direct Replacement (No Design Changes Required): Select MAX3490EESA+, MAX3490ESA+, ADM3490ARZ-REEL7, ADM3490EARZ-REEL7, or ISL83490IBZ-T. These parts maintain identical electrical specifications including 10Mbps data rate and 50 mV receiver hysteresis. All are ROHS3 compliant and active products. Choose based on packaging preference (Tube vs. Cut Tape & Digi-Reel) and manufacturer availability.
For Applications with Lower Data Rate Requirements: The ADM3488 series (ADM3488ARZ, ADM3488ARZ-REEL7, ADM3488EARZ, ADM3488EARZ-REEL7) operates at 250kbps and is suitable only for applications where the reduced data rate specification does not impact system performance. All other parameters remain identical to the main part. These parts are active and ROHS3 compliant.
For Enhanced Performance Applications: ISL83077EIBZA from Renesas Electronics offers 20Mbps data rate and 15 mV receiver hysteresis, providing improved noise margin and higher speed capability. This part is active and ROHS3 compliant but carries MSL-3 (168 Hours) moisture sensitivity versus MSL-1 (Unlimited) for other options. Use this part only if the enhanced performance specifications are required and MSL-3 handling procedures are implemented.
Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status. Moisture sensitivity levels vary: MAX3490 and ADM3490 series carry MSL-1 (Unlimited), while ISL83 series carry MSL-3 (168 Hours). Select based on storage and handling capabilities of your manufacturing environment.
Frequently Asked Questions (FAQ)
Q: Can I use MAX3490EESA+ or MAX3490ESA+ as direct replacements for MAX3490EESA? A: Yes. MAX3490EESA+ and MAX3490ESA+ are parametric equivalents with identical electrical specifications. The primary difference is product status (Active vs. Obsolete) and packaging format (Tube). Both are pin-compatible and functionally identical for all RS422/RS485 applications operating at 10Mbps.
Q: What is the difference between ADM3490 and ADM3488 series substitutes? A: The ADM3490 series maintains the 10Mbps data rate specification identical to MAX3490EESA. The ADM3488 series operates at 250kbps. Select ADM3488 only if your application does not require the full 10Mbps data rate capability. All other electrical parameters remain identical.
Q: Are Renesas ISL83 series parts compatible with MAX3490EESA? A: ISL83490IBZ-T is a full parametric equivalent with identical 10Mbps data rate and 50 mV hysteresis. ISL83077EIBZA offers enhanced performance (20Mbps, 15 mV hysteresis) but is suitable only for applications requiring these specifications. Both are pin-compatible in 8-SOIC packaging. Note that ISL83 parts carry MSL-3 moisture sensitivity versus MSL-1 for Analog Devices parts.
Q: What packaging options are available for substitutes? A: Tube packaging is available from MAX3490EESA+, MAX3490ESA+, ADM3488ARZ, ADM3488EARZ, and ISL83077EIBZA. Cut Tape & Digi-Reel packaging is available from ADM3488ARZ-REEL7, ADM3490ARZ-REEL7, ADM3490EARZ-REEL7, and ISL83490IBZ-T. Tape & Reel packaging is available from ADM3488EARZ-REEL7. Select based on your procurement and assembly requirements.
Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the compliance status of MAX3490EESA.
Q: What is the significance of MSL ratings for these parts? A: MSL-1 (Unlimited) indicates no moisture sensitivity restrictions on storage and handling. MSL-3 (168 Hours) requires that parts be used within 168 hours of opening the moisture barrier bag. Analog Devices parts carry MSL-1. Renesas ISL83 parts carry MSL-3. Select based on your manufacturing environment's moisture control capabilities.
Q: Can I mix different substitute parts in the same design? A: Yes, provided all parts meet your application's data rate and hysteresis requirements. However, for consistency and supply chain simplification, standardizing on a single part number is recommended.
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