MAX3085CPA RS422/RS485 Half-Duplex Transceiver Equivalent & Substitute Parts

Part Overview

The MAX3085CPA is a half-duplex RS422/RS485 transceiver IC manufactured by Analog Devices Inc./Maxim Integrated in an 8-DIP through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The MAX3085CPA maintains full electrical and mechanical compatibility with its active-status successors, enabling direct substitution in existing applications without circuit redesign.

Substiute Parts

MAX3085CPA

Analog Devices Inc./Maxim IntegratedIn Stock: 14689MAX3085CPA Datasheet

Current PartRFQ

MAX3085CPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 37123MAX3085CPA+ Datasheet

Parametric EquivalentRFQ

MAX3085ECPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2746MAX3085ECPA+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX3085CPA are determined by strict equivalence across the following critical parameters:

• Protocol Compatibility: RS422/RS485 half-duplex operation
• Electrical Performance: 1/1 driver/receiver configuration, 500 kbps data rate, 100 mV receiver hysteresis
• Supply Voltage: 4.75V ~ 5.25V operating range
• Temperature Range: 0°C ~ 70°C
• Package Specification: 8-DIP (0.300", 7.62mm) through-hole mounting
• Pin Configuration: 8-PDIP supplier device package

The MAX3085CPA+ and MAX3085ECPA+ meet all electrical and mechanical parameters required for direct substitution. Both parts maintain identical functional specifications while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both MAX3085CPA+ and MAX3085ECPA+ are qualified substitutes for the obsolete MAX3085CPA based on identical electrical specifications and mechanical compatibility. Selection between the two active alternatives should be based on:

Product Availability: MAX3085CPA+ offers higher inventory levels (37,074 units) compared to MAX3085ECPA+ (2,646 units), making it the preferred choice for volume production and long-term supply chain stability.

Compliance Status: Both substitute parts achieve ROHS3 compliance, addressing regulatory requirements that the original MAX3085CPA does not meet. Both maintain REACH Unaffected and EAR99 ECCN classifications.

Packaging Specification: Both substitutes are supplied in tube packaging, which may differ from original stock packaging but does not affect electrical or mechanical performance in through-hole PCB assembly.

Frequently Asked Questions (FAQ)

Q: Can MAX3085CPA+ and MAX3085ECPA+ be used interchangeably with MAX3085CPA?

A: Yes. Both substitute parts maintain identical electrical specifications (RS422/RS485 protocol, 1/1 driver/receiver configuration, 500 kbps data rate, 100 mV receiver hysteresis) and mechanical compatibility (8-DIP through-hole package). Direct substitution requires no circuit modifications.

Q: What is the difference between MAX3085CPA+ and MAX3085ECPA+?

A: The parts are electrically and mechanically identical. The primary difference is inventory availability. MAX3085CPA+ has significantly higher stock levels, making it the preferred selection for production applications.

Q: Does the tube packaging of substitute parts affect PCB assembly?

A: No. Tube packaging is a distribution format only and does not affect component performance, electrical characteristics, or through-hole mounting compatibility.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both MAX3085CPA+ and MAX3085ECPA+ are ROHS3 compliant, addressing environmental and regulatory requirements not met by the obsolete MAX3085CPA.

Q: Can these parts be used in new designs?

A: Yes. Both MAX3085CPA+ and MAX3085ECPA+ carry active product status, making them suitable for new designs and long-term production applications.