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MAX487EESA+ Equivalent & Substitute Parts
Part Overview
The MAX487EESA+ is an active RS422/RS485 half-duplex transceiver IC manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates as a 1/1 driver/receiver configuration in an 8-SOIC surface mount package. The part is currently in active production status with 1415 units in stock inventory.
Substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for functionally equivalent alternatives from the same or complementary product families.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MAX487EESA+ |
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Category | Interface |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Half |
| Receiver Hysteresis | 70 mV |
| Data Rate | 250 kbps |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX487EESA+ is determined by the following critical parameters:
Protocol Compatibility: RS422/RS485 half-duplex operation is mandatory. All substitute parts must support both protocols with identical 1/1 driver/receiver configuration.
Electrical Specifications: Supply voltage range (4.75V ~ 5.25V), receiver hysteresis (70 mV), and operating temperature range (-40°C ~ 85°C) must be maintained or exceeded.
Physical Package: All substitutes must use the 8-SOIC surface mount package with identical pinout and mechanical dimensions (0.154", 3.90mm Width).
Regulatory Compliance: ROHS3 compliance and REACH unaffected status are required for all substitutes.
Data Rate Consideration: The MAX487EESA+ operates at 250 kbps. Substitute parts with higher data rate specifications (30 Mbps) remain functionally compatible as they support the lower operating speed.
Substitute parts are grouped into two categories: parametric equivalents (identical specifications) and manufacturer-recommended alternatives (enhanced performance characteristics with compatible electrical and mechanical parameters).
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Data Rate | Supply Voltage | Operating Temp | Package | Inventory |
|---|---|---|---|---|---|---|---|---|
| MAX487EESA+ | Analog Devices/Maxim | RS422, RS485 | 1/1 | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | 1415 |
| MAX483EESA+ | Analog Devices/Maxim | RS422, RS485 | 1/1 | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | 5400 |
| MAX483ESA+ | Analog Devices/Maxim | RS422, RS485 | 1/1 | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | 20100 |
| MAX487ESA+ | Analog Devices/Maxim | RS422, RS485 | 1/1 | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | 3200 |
| ADM1485ARZ | Analog Devices | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | 19566 |
| ADM1485ARZ-REEL | Analog Devices | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | 30400 |
| ADM1485ARZ-REEL7 | Analog Devices | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | 15100 |
| ADM1485JRZ | Analog Devices | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | 16500 |
| ADM1485JRZ-REEL | Analog Devices | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | 19479 |
| ADM1486ARZ | Analog Devices | RS422, RS485 | 1/1 | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | 9798 |
Engineering Selection Recommendations
Parametric Equivalents (MAX483 and MAX487 Series): The MAX483EESA+, MAX483ESA+, and MAX487ESA+ parts maintain identical electrical and thermal specifications to the MAX487EESA+. These parts are suitable for direct substitution when packaging format (tube) is acceptable. The MAX483ESA+ offers the highest inventory availability at 20100 units.
Manufacturer-Recommended Alternatives (ADM1485 and ADM1486 Series): The ADM1485ARZ, ADM1485ARZ-REEL, ADM1485ARZ-REEL7, ADM1485JRZ, ADM1485JRZ-REEL, and ADM1486ARZ parts are manufacturer-recommended substitutes with enhanced data rate specifications (30 Mbps versus 250 kbps). These parts maintain full compatibility with the supply voltage, package type, and regulatory compliance requirements.
Temperature Range Consideration: The ADM1485JRZ and ADM1485JRZ-REEL variants operate within a narrower temperature range (0°C ~ 70°C) compared to the MAX487EESA+ (-40°C ~ 85°C). These parts are suitable only for applications that do not require extended low-temperature or high-temperature operation.
Packaging Format Selection: Tube packaging is standard for the MAX487EESA+. Cut Tape (CT) & Digi-Reel® packaging variants (ADM1485ARZ-REEL, ADM1485ARZ-REEL7, ADM1485JRZ-REEL) are available for high-volume manufacturing processes requiring automated reel feeding.
Regulatory and Compliance Status: All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.
Frequently Asked Questions (FAQ)
Q: Can MAX483 series parts replace MAX487EESA+ in existing designs?
A: Yes. The MAX483EESA+ and MAX483ESA+ are parametric equivalents with identical protocol support (RS422/RS485), driver/receiver configuration (1/1), electrical specifications, and operating temperature range. The parts are pin-compatible in the 8-SOIC package and require no circuit modifications.
Q: What is the difference between ADM1485ARZ and ADM1485JRZ?
A: Both parts are manufacturer-recommended substitutes with identical data rate (30 Mbps) and supply voltage specifications. The primary difference is operating temperature range: ADM1485ARZ operates from -40°C to 85°C, while ADM1485JRZ operates from 0°C to 70°C. Select ADM1485ARZ for applications requiring extended temperature operation.
Q: Are Cut Tape & Digi-Reel® packaged parts functionally identical to tube-packaged parts?
A: Yes. The ADM1485ARZ-REEL, ADM1485ARZ-REEL7, and ADM1485JRZ-REEL parts are functionally identical to their tube-packaged counterparts. The packaging difference affects only the delivery format and is suitable for automated assembly processes. Electrical specifications and performance remain unchanged.
Q: Why do some substitute parts have higher data rates (30 Mbps) than the original part (250 kbps)?
A: Higher data rate specifications indicate enhanced performance capability. Parts with 30 Mbps ratings are backward-compatible with lower-speed applications and will operate correctly at 250 kbps. The higher specification provides design flexibility for future applications without requiring component changes.
Q: Can ADM1485JRZ be used in applications requiring -40°C operation?
A: No. The ADM1485JRZ operating temperature range is 0°C to 70°C. For applications requiring operation below 0°C, use ADM1485ARZ, ADM1485ARZ-REEL, ADM1485ARZ-REEL7, or ADM1486ARZ, which all support -40°C to 85°C operation.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, meeting current environmental regulations for electronic component manufacturing and distribution.
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