MAX485EAS Equivalent & Substitute Parts

Part Overview

The MAX485EAS is an active RS422/RS485 half-duplex transceiver integrated circuit in an 8-SOIC surface mount package. This component functions as a single driver/receiver pair for serial communication protocols requiring differential signaling over twisted-pair cabling. The part maintains Active product status with 3064 units in current inventory. Equivalent substitute parts are identified based on matching electrical specifications, mechanical compatibility, and protocol support to ensure seamless integration in existing designs or production environments.

Substiute Parts

MAX485EAS

UMWIn Stock: 3092MAX485EAS Datasheet

Current PartRFQ

ADM485ARZ

UMWIn Stock: 29130ADM485ARZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX485EAS are identified through strict parametric matching across electrical and mechanical specifications. The substitution criteria are based on the following key parameters:

Electrical Compatibility Requirements:

• Protocol support: RS422 and RS485 compliance
• Transceiver configuration: 1/1 driver/receiver pair
• Duplex operation: Half-duplex mode
• Data rate: 2.5 Mbps minimum
• Supply voltage: 4.75V ~ 5.25V operating range
• Receiver hysteresis: 70 mV threshold
• Operating temperature: 0°C ~ 70°C

Mechanical Compatibility Requirements:

• Package type: 8-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Moisture sensitivity: MSL 1 (Unlimited)

Parts meeting all specified parameters are classified as parametric equivalents and direct substitutes. The ADM485ARZ satisfies all electrical and mechanical requirements, differing only in packaging format (Cut Tape & Digi-Reel® versus Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

The ADM485ARZ is a direct parametric equivalent to the MAX485EAS. Both components are manufactured by UMW and maintain Active product status. All electrical specifications, mechanical dimensions, and compliance certifications (ECCN: EAR99, HTSUS: 8542.39.0001) are identical.

The sole difference between these parts is the packaging format. The MAX485EAS is supplied in Tape & Reel (TR) format, while the ADM485ARZ is available in Cut Tape (CT) & Digi-Reel® format. This distinction affects procurement and handling procedures but does not impact electrical performance or circuit functionality.

Selection between these parts should be based on:

1. Inventory availability: ADM485ARZ has 29020 units in stock compared to 3064 units for MAX485EAS
2. Packaging requirements: Choose based on assembly line compatibility with existing tape handling equipment
3. Supply chain continuity: Both parts maintain Active status with established manufacturing support

Frequently Asked Questions (FAQ)

Q: Can the ADM485ARZ be used as a direct replacement for the MAX485EAS in existing designs?

A: Yes. The ADM485ARZ is a parametric equivalent with identical electrical specifications, pin configuration, and package dimensions. No circuit modifications are required for substitution.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on a reel, suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging provides components on cut tape segments with optional reel storage, offering flexibility for lower-volume or mixed-component assembly operations. Both formats contain identical components with the same electrical and mechanical specifications.

Q: Are there any pin compatibility concerns when substituting the ADM485ARZ for the MAX485EAS?

A: No. Both components use the 8-SOIC package with identical pin assignments and electrical characteristics. Direct PCB substitution is possible without layout modifications.

Q: Do both parts support the same communication protocols?

A: Yes. Both the MAX485EAS and ADM485ARZ support RS422 and RS485 protocols with identical half-duplex transceiver configuration, data rates, and receiver hysteresis specifications.

Q: What are the compliance certifications for these parts?

A: Both parts carry identical compliance designations: ECCN EAR99 and HTSUS 8542.39.0001. No additional compliance documentation is required when substituting between these parts.

Q: Is the operating temperature range the same for both parts?

A: Yes. Both components operate across the identical temperature range of 0°C to 70°C (TA), with matching supply voltage requirements of 4.75V to 5.25V.