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MAX485EEPA Equivalent & Substitute Parts
Part Overview
The MAX485EEPA is a half-duplex RS422/RS485 transceiver IC in 8-DIP packaging manufactured by Analog Devices Inc./Maxim Integrated. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs and ongoing production requirements. The MAX485EEPA operates at 2.5 Mbps data rate with a 4.75V to 5.25V supply voltage range and supports industrial temperature operation from -40°C to 85°C.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Manufacturer Part Number | MAX485EEPA |
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Half |
| Data Rate | 2.5 Mbps |
| Receiver Hysteresis | 70 mV |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitution of the MAX485EEPA is determined by strict equivalence across the following critical parameters:
- Protocol support: RS422/RS485 half-duplex operation
- Electrical characteristics: 1/1 driver/receiver configuration, 70 mV receiver hysteresis, 2.5 Mbps data rate
- Supply voltage: 4.75V to 5.25V
- Operating temperature range: -40°C to 85°C
- Package: 8-DIP (0.300", 7.62mm) through-hole mounting
- Pin compatibility: 8-PDIP supplier device package
Substitute parts are grouped into two categories:
Parametric Equivalents maintain identical electrical specifications and package form factor. These parts are direct replacements with active product status and improved RoHS3 compliance.
Manufacturer Recommended Alternatives offer enhanced performance specifications (higher data rates) or modified temperature ranges while maintaining core RS422/RS485 functionality and 8-DIP packaging. These parts require design verification for temperature and data rate compatibility.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Data Rate | Operating Temperature | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|
| MAX485EEPA | Analog Devices Inc./Maxim Integrated | Obsolete | 2.5 Mbps | -40°C ~ 85°C | RoHS non-compliant | 3700 |
| MAX1487EEPA+ | Analog Devices Inc./Maxim Integrated | Active | 2.5 Mbps | -40°C ~ 85°C | ROHS3 Compliant | 3900 |
| MAX1487EPA+ | Analog Devices Inc./Maxim Integrated | Active | 2.5 Mbps | -40°C ~ 85°C | ROHS3 Compliant | 4463 |
| MAX481EPA+ | Analog Devices Inc./Maxim Integrated | Active | 2.5 Mbps | -40°C ~ 85°C | ROHS3 Compliant | 4320 |
| MAX485EEPA+ | Analog Devices Inc./Maxim Integrated | Active | 2.5 Mbps | -40°C ~ 85°C | ROHS3 Compliant | 4296 |
| MAX485EEPA+G104 | Analog Devices Inc./Maxim Integrated | Active | 2.5 Mbps | -40°C ~ 85°C | ROHS3 Compliant | 1146 |
| MAX485EPA+ | Analog Devices Inc./Maxim Integrated | Active | 2.5 Mbps | -40°C ~ 85°C | ROHS3 Compliant | 23407 |
| ADM1485ANZ | Analog Devices Inc. | Active | 30 Mbps | -40°C ~ 85°C | ROHS3 Compliant | 1920 |
| ADM1485JNZ | Analog Devices Inc. | Active | 30 Mbps | 0°C ~ 70°C | ROHS3 Compliant | 1800 |
| ADM485ANZ | Analog Devices Inc. | Active | 5 Mbps | -40°C ~ 85°C | ROHS3 Compliant | 4049 |
| ADM485JNZ | Analog Devices Inc. | Active | 5 Mbps | 0°C ~ 70°C | ROHS3 Compliant | 6300 |
Engineering Selection Recommendations
For Direct Replacement (Parametric Equivalents):
MAX485EPA+ is the primary recommended substitute. It maintains identical electrical specifications and operating parameters while offering active product status and ROHS3 compliance. Inventory availability is substantial at 23,407 units. This part provides the most straightforward migration path from the obsolete MAX485EEPA.
MAX1487EEPA+ and MAX1487EPA+ are functionally equivalent alternatives with active status and full RoHS3 compliance. Both maintain the 2.5 Mbps data rate and -40°C to 85°C temperature range.
MAX481EPA+ and MAX485EEPA+ are additional parametric equivalents with active product status suitable for direct substitution.
For Enhanced Performance Applications:
ADM1485ANZ supports 30 Mbps data rate while maintaining the -40°C to 85°C industrial temperature range. This part is suitable for applications requiring higher bandwidth within the same thermal operating envelope.
ADM485ANZ provides 5 Mbps operation with -40°C to 85°C temperature coverage, offering a performance step between the base 2.5 Mbps specification and the 30 Mbps ADM1485 variant.
Temperature-Constrained Applications:
ADM1485JNZ and ADM485JNZ are restricted to 0°C to 70°C operation and are suitable only for commercial temperature range applications. These parts are not appropriate for industrial or extended temperature designs.
All recommended substitutes maintain 8-DIP through-hole packaging, RS422/RS485 protocol support, and 1/1 driver/receiver configuration. All active alternatives comply with ROHS3 and REACH requirements.
Frequently Asked Questions (FAQ)
Q: Can MAX485EPA+ be used as a direct replacement for MAX485EEPA?
A: Yes. MAX485EPA+ is a parametric equivalent with identical electrical specifications, package form factor, and pin configuration. The primary differences are active product status and ROHS3 compliance. No design modifications are required.
Q: What is the difference between MAX485EEPA+ and MAX485EPA+?
A: Both parts are parametric equivalents with identical electrical performance. The difference is in packaging designation: MAX485EEPA+ specifies tube packaging, while MAX485EPA+ also specifies tube packaging. Both maintain the same 8-DIP form factor and are functionally interchangeable.
Q: Can ADM1485ANZ replace MAX485EEPA in all applications?
A: ADM1485ANZ is functionally compatible but operates at 30 Mbps versus the MAX485EEPA's 2.5 Mbps specification. For applications operating at or below 2.5 Mbps, ADM1485ANZ is suitable. Applications requiring the exact 2.5 Mbps specification should use parametric equivalents such as MAX485EPA+.
Q: Why should I avoid ADM1485JNZ and ADM485JNZ?
A: These parts operate only within the 0°C to 70°C commercial temperature range, compared to the MAX485EEPA's -40°C to 85°C industrial range. They are unsuitable for applications requiring extended temperature operation or industrial environments.
Q: Is the MAX485EEPA+G104 variant suitable for replacement?
A: Yes. MAX485EEPA+G104 maintains identical electrical specifications and 8-DIP packaging. The G104 designation indicates a specific manufacturing date code or qualification level. It is a direct parametric equivalent with active status and ROHS3 compliance.
Q: What is the inventory status for substitute parts?
A: MAX485EPA+ has the highest inventory at 23,407 units, making it the most readily available substitute. MAX1487EPA+ (4,463 units) and MAX485EEPA+ (4,296 units) are also well-stocked. All recommended parametric equivalents maintain active production status.
Q: Are all substitute parts RoHS compliant?
A: All active substitute parts listed are ROHS3 compliant. The original MAX485EEPA is RoHS non-compliant. Migration to any active substitute improves regulatory compliance for new designs and production.
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