SP3485EEN Equivalent & Substitute Parts

Part Overview

The SP3485EEN is an active RS422/RS485 half-duplex transceiver interface integrated circuit in 8-SOIC surface mount packaging. This component functions as a single driver/receiver pair for serial communication protocols requiring differential signaling over twisted-pair media. The part maintains active product status with continuous manufacturing availability. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and compliance certifications align with the original specification, enabling procurement flexibility and supply chain continuity.

Substiute Parts

SP3485EEN

UMWIn Stock: 15489SP3485EEN Datasheet

Current PartRFQ

ADM3485EARZ

UMWIn Stock: 4020ADM3485EARZ Datasheet

Parametric EquivalentRFQ

MAX3485ESA

UMWIn Stock: 25144MAX3485ESA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SP3485EEN are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic requires exact matching of the following parameters:

Critical Matching Parameters:

• Protocol Support: RS422 and RS485
• Number of Drivers/Receivers: 1/1 configuration
• Duplex Mode: Half-duplex operation
• Data Rate: 12 Mbps minimum
• Supply Voltage Range: 2.97V ~ 3.63V
• Operating Temperature Range: -40°C ~ 85°C
• Receiver Hysteresis: 30 mV
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Product Status: Active

All identified substitute parts meet these parameters without exception. Packaging format differences (Tape & Reel versus Cut Tape & Digi-Reel) do not affect electrical or mechanical compatibility and represent procurement and handling variations only.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SP3485EEN, ADM3485EARZ, and MAX3485ESA—are functionally equivalent and interchangeable based on electrical specifications and mechanical compatibility. Selection among these parts is determined by availability, packaging format preference, and supply chain requirements rather than technical performance differences.

Compliance and Certification Status: All parts maintain ROHS3 compliance, REACH unaffected status, and active product status. All parts are classified under ECCN EAR99 and HTSUS 8542.39.0001, indicating equivalent regulatory treatment.

Packaging Considerations: The SP3485EEN is supplied in Tape & Reel (TR) format with 15,442 pieces in stock. The ADM3485EARZ is supplied in Cut Tape (CT) & Digi-Reel format with 3,917 pieces in stock. The MAX3485ESA is supplied in Cut Tape (CT) & Digi-Reel format with 25,100 pieces in stock. Packaging format selection depends on assembly process requirements and order quantity.

Inventory Availability: MAX3485ESA offers the highest current inventory level at 25,100 pieces, followed by SP3485EEN at 15,442 pieces, and ADM3485EARZ at 3,917 pieces. Inventory levels influence lead time and procurement strategy.

Frequently Asked Questions (FAQ)

Q: Can ADM3485EARZ replace SP3485EEN in an existing design?

A: Yes. ADM3485EARZ meets all electrical and mechanical specifications of SP3485EEN. The 8-SOIC package footprint, pin configuration, voltage range, data rate, and operating temperature range are identical. Packaging format differs (Cut Tape & Digi-Reel versus Tape & Reel) but does not affect circuit-level compatibility.

Q: What is the difference between these three transceiver parts?

A: The three parts are electrically and mechanically identical. Differences exist only in manufacturer part number designation, packaging format, and current inventory levels. All support RS422/RS485 protocols, operate at 12 Mbps, function as half-duplex 1/1 transceivers, and are housed in 8-SOIC packages.

Q: Are there any pin configuration differences between SP3485EEN and MAX3485ESA?

A: No. Both parts use the 8-SOIC package with identical pin assignments. Direct substitution on the printed circuit board is possible without layout modifications.

Q: Do all three parts support the same supply voltage range?

A: Yes. All three parts operate within the 2.97V to 3.63V supply voltage range. They are suitable for 3.3V logic systems and compatible with equivalent power supply specifications.

Q: What is the significance of the 30 mV receiver hysteresis specification?

A: The 30 mV receiver hysteresis is identical across all three parts. This specification defines the differential voltage threshold between logic state transitions and ensures consistent signal interpretation across all substitute options.

Q: Can these parts be used interchangeably in high-speed RS485 networks?

A: Yes. All three parts support 12 Mbps data rates and half-duplex RS485 operation. They are suitable for equivalent network topologies and communication protocols.

Q: What is the Moisture Sensitivity Level (MSL) rating, and is it the same for all parts?

A: All three parts carry MSL Level 1 (Unlimited), indicating unlimited shelf life without moisture control requirements. This specification is identical across all substitute options.

Q: Are there any temperature range limitations that would prevent substitution?

A: No. All three parts operate across the identical -40°C to 85°C temperature range. They are suitable for equivalent industrial and commercial applications without thermal performance differences.