SP485EN Equivalent & Substitute Parts

Part Overview

The SP485EN is an active, half-duplex RS422/RS485 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 extended distances. The SP485EN is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified when identical electrical performance parameters and mechanical compatibility are maintained across alternative manufacturer offerings.

Substiute Parts

SP485EN

UMWIn Stock: 1787SP485EN Datasheet

Current PartRFQ

ADM485ARZ

UMWIn Stock: 29130ADM485ARZ Datasheet

Parametric EquivalentRFQ

MAX485EAS

UMWIn Stock: 3092MAX485EAS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SP485EN is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Protocol support (RS422 and RS485 required)
• Driver/receiver configuration (1/1 half-duplex required)
• Receiver hysteresis (70 mV required)
• Maximum data rate (2.5 Mbps minimum)
• Supply voltage range (4.75V ~ 5.25V required)
• Operating temperature range (0°C ~ 70°C minimum)

Mechanical Compatibility Parameters:

• Package type (8-SOIC with 0.154" width, 3.90mm required)
• Mounting type (Surface Mount required)
• Moisture sensitivity level (MSL 1 or better)

Regulatory & Compliance Parameters:

• Product status (Active required)
• RoHS compliance (RoHS3 or equivalent)

Parts ADM485ARZ and MAX485EAS meet all electrical and mechanical requirements for direct substitution with the SP485EN. Both components maintain identical protocol support, transceiver configuration, hysteresis specification, data rate capability, voltage supply range, and operating temperature range. Package specifications and mounting types are identical. Both parts carry Active product status and RoHS3 compliance certification.

Parameter Comparison

Engineering Selection Recommendations

All three components—SP485EN, ADM485ARZ, and MAX485EAS—are classified as Active products with full RoHS3 compliance and identical electrical specifications. Selection between these parts is based on packaging format and inventory availability rather than functional performance.

SP485EN is supplied in Cut Tape (CT) and Digi-Reel® packaging with 1,742 units in stock. This format is suitable for applications requiring smaller order quantities or mixed component procurement.

ADM485ARZ is supplied in Cut Tape (CT) and Digi-Reel® packaging with 29,020 units in stock. This part offers the highest inventory availability and identical packaging format to the SP485EN.

MAX485EAS is supplied in Tape & Reel (TR) packaging with 3,064 units in stock. This format is optimized for high-volume automated assembly operations.

All three parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can ADM485ARZ be used as a direct replacement for SP485EN in existing circuit designs?

A: Yes. ADM485ARZ meets all electrical and mechanical specifications required for direct substitution. Both components support RS422 and RS485 protocols, maintain identical 1/1 half-duplex transceiver configuration, 70 mV receiver hysteresis, 2.5 Mbps data rate, 4.75V to 5.25V supply voltage range, and 0°C to 70°C operating temperature range. Package specifications and surface mount mounting type are identical. No circuit modifications are required.

Q: What is the difference between SP485EN and MAX485EAS?

A: The electrical and functional specifications are identical. The primary difference is packaging format. SP485EN is supplied in Cut Tape (CT) and Digi-Reel® format, while MAX485EAS is supplied in Tape & Reel (TR) format. Tape & Reel packaging is designed for high-speed automated pick-and-place assembly, while Cut Tape and Digi-Reel formats accommodate lower-volume or mixed-component procurement workflows.

Q: Are all three parts RoHS3 compliant?

A: Yes. SP485EN, ADM485ARZ, and MAX485EAS all carry RoHS3 compliance certification. All three parts maintain MSL 1 (Unlimited) moisture sensitivity rating and are suitable for applications with standard PCB assembly and storage conditions.

Q: Which part should be selected for high-volume production?

A: MAX485EAS in Tape & Reel (TR) packaging is optimized for high-volume automated assembly. ADM485ARZ offers the highest inventory availability (29,020 units) and is also suitable for volume production with standard reel-based pick-and-place equipment.

Q: Do these parts have identical pin configurations?

A: Yes. All three components use the 8-SOIC (0.154", 3.90mm Width) package with identical pin assignments. PCB footprints and schematic symbols are interchangeable.

Q: What is the significance of the 70 mV receiver hysteresis specification?

A: Receiver hysteresis defines the voltage differential required between the rising and falling threshold levels of the input comparator. The 70 mV specification ensures noise immunity and stable signal detection in RS422/RS485 differential communication systems. All three substitute parts maintain this identical specification.