Request Quote
(Ships tomorrow)
MAX487EESA RS422/RS485 Half-Duplex Transceiver Equivalent & Substitute Parts
Part Overview
The MAX487EESA is a half-duplex RS422/RS485 transceiver IC manufactured by Analog Devices Inc./Maxim Integrated in an 8-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MAX487EESA operates at 250 kbps data rate with a 70 mV receiver hysteresis and supports supply voltages from 4.75V to 5.25V across an operating temperature range of -40°C to 85°C.
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) |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the MAX487EESA is determined by strict equivalence across the following critical parameters:
- Protocol: RS422/RS485 half-duplex operation
- Number of Drivers/Receivers: 1/1 configuration
- Receiver Hysteresis: 70 mV
- Voltage Supply Range: 4.75V ~ 5.25V
- Package Type: 8-SOIC form factor
- Mounting Type: Surface Mount
- Moisture Sensitivity Level: 1 (Unlimited)
Substitute parts are grouped into two categories:
Parametric Equivalents maintain identical electrical specifications and data rate (250 kbps) with improved product status (Active) and RoHS3 compliance. These include MAX483EESA+, MAX483ESA+, MAX487EESA+, and MAX487ESA+.
Manufacturer Recommended Substitutes are higher-performance alternatives from Analog Devices that maintain core functional compatibility (1/1 half-duplex RS422/RS485 transceiver) while offering enhanced data rates (30 Mbps) and active product status. These include ADM1485 and ADM1486 series parts with various packaging and temperature grade options.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Duplex | Data Rate | Supply Voltage | Operating Temp | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| MAX487EESA | Analog Devices/Maxim | RS422, RS485 | 1/1 | Half | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Obsolete | Non-compliant |
| MAX483EESA+ | Analog Devices/Maxim | RS422, RS485 | 1/1 | Half | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| MAX483ESA+ | Analog Devices/Maxim | RS422, RS485 | 1/1 | Half | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| MAX487EESA+ | Analog Devices/Maxim | RS422, RS485 | 1/1 | Half | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| MAX487ESA+ | Analog Devices/Maxim | RS422, RS485 | 1/1 | Half | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1485ARZ | Analog Devices | RS422, RS485 | 1/1 | Half | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1485ARZ-REEL | Analog Devices | RS422, RS485 | 1/1 | Half | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1485ARZ-REEL7 | Analog Devices | RS422, RS485 | 1/1 | Half | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1485JRZ | Analog Devices | RS422, RS485 | 1/1 | Half | 30 Mbps | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1485JRZ-REEL | Analog Devices | RS422, RS485 | 1/1 | Half | 30 Mbps | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| ADM1486ARZ | Analog Devices | RS422, RS485 | 1/1 | Half | 30 Mbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For designs currently using the obsolete MAX487EESA, the MAX487EESA+ provides direct substitution with identical electrical performance and improved compliance status. This part maintains the 250 kbps data rate and -40°C to 85°C operating range while achieving ROHS3 compliance and active product status.
The MAX483EESA+ and MAX483ESA+ offer equivalent functionality with higher inventory availability and active product status, suitable for applications where the MAX487 base number is not a design requirement.
For applications requiring enhanced performance and extended product lifecycle support, the ADM1485 and ADM1486 series provide 30 Mbps data rate capability while maintaining identical supply voltage, package form factor, and core transceiver functionality. The ADM1485ARZ variants with -40°C to 85°C operating range directly support extended temperature applications. The ADM1485JRZ variants operate within the 0°C to 70°C commercial temperature range.
All recommended substitutes maintain RoHS3 compliance, MSL 1 rating, and 8-SOIC surface mount packaging, ensuring PCB layout compatibility with the original MAX487EESA design.
Frequently Asked Questions (FAQ)
Q: Can MAX483EESA+ directly replace MAX487EESA in existing designs?
A: Yes. Both parts are half-duplex RS422/RS485 transceivers with 1/1 driver/receiver configuration, 70 mV receiver hysteresis, 250 kbps data rate, 4.75V to 5.25V supply voltage, and identical 8-SOIC packaging. The primary differences are product status (Active vs. Obsolete) and RoHS compliance.
Q: What is the difference between MAX487EESA+ and ADM1485ARZ?
A: Both maintain identical core specifications (1/1 half-duplex RS422/RS485, 4.75V to 5.25V supply, 8-SOIC package, -40°C to 85°C operating range). The ADM1485ARZ offers a higher data rate of 30 Mbps compared to 250 kbps, providing enhanced performance headroom for future design iterations while maintaining backward compatibility.
Q: Are packaging variants (Tube vs. Cut Tape & Digi-Reel) electrically equivalent?
A: Yes. Packaging variants such as MAX487EESA+ (Tube) and ADM1485ARZ-REEL (Cut Tape & Digi-Reel) contain identical die and electrical specifications. Packaging differences affect only supply format and handling, not functional performance or pin compatibility.
Q: Why does ADM1485JRZ have a narrower operating temperature range?
A: The ADM1485JRZ is specified for 0°C to 70°C commercial temperature operation, while ADM1485ARZ covers -40°C to 85°C industrial temperature range. Select ADM1485JRZ only for applications with confirmed commercial temperature requirements to optimize cost.
Q: Is the 8-SOIC package identical across all substitute parts?
A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, ensuring pin-for-pin compatibility and identical PCB footprint with the MAX487EESA.
Q: Do all substitutes maintain the same receiver hysteresis specification?
A: Yes. All listed substitute parts maintain 70 mV receiver hysteresis, ensuring equivalent noise immunity and signal detection characteristics in RS422/RS485 bus applications.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts