DS3487M Equivalent & Substitute Parts

Part Overview

The DS3487M is a 4/0 Driver IC for RS422 and RS485 serial communication interfaces, manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The DS3487M operates within a supply voltage range of 4.75V to 5.25V and supports operating temperatures from 0°C to 70°C. Due to its obsolete status, active equivalent parts from other manufacturers provide continued availability and often enhanced performance characteristics.

Substiute Parts

DS3487M

Texas InstrumentsIn Stock: 4277DS3487M Datasheet

Current PartRFQ

ISL32172EIBZ

Renesas Electronics CorporationIn Stock: 3205ISL32172EIBZ Datasheet

MFR RecommendedRFQ

ISL32172EIBZ-T

Renesas Electronics CorporationIn Stock: 1382ISL32172EIBZ-T Datasheet

MFR RecommendedRFQ

ST26C31BDR

STMicroelectronicsIn Stock: 30523ST26C31BDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DS3487M is determined by the following critical parameters:

• Protocol compatibility: RS422 and RS485 serial communication standards
• Driver/Receiver configuration: 4/0 (4 drivers, 0 receivers)
• Package type: 16-SOIC surface mount form factor with 0.154" (3.90mm) width
• Supply voltage overlap: Minimum 4.75V requirement must be supported
• Mounting compatibility: Surface mount technology

The substitute parts ISL32172EIBZ, ISL32172EIBZ-T, and ST26C31BDR meet these core substitution criteria. All three parts maintain the 4/0 driver configuration, RS422/RS485 protocol support, and 16-SOIC package specification. The ISL32172 variants are available in different packaging formats (Tube and Tape & Reel), while the ST26C31BDR is supplied in Cut Tape and Digi-Reel format.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with ROHS3 compliance, providing regulatory advantages over the obsolete DS3487M. The ISL32172EIBZ and ISL32172EIBZ-T variants from Renesas Electronics offer extended operating temperature range (-40°C to 125°C) and wider supply voltage tolerance (3V to 5.5V), supporting broader application requirements. The ST26C31BDR from STMicroelectronics maintains a narrower operating temperature range (-40°C to 85°C) with supply voltage specification of 4.5V to 5.5V.

For applications requiring the original DS3487M operating temperature range (0°C to 70°C) and supply voltage specification (4.75V to 5.25V), all three substitutes provide full compatibility. The choice between ISL32172EIBZ variants depends on packaging requirements: Tube packaging for ISL32172EIBZ or Tape & Reel for ISL32172EIBZ-T. The ST26C31BDR is available in Cut Tape and Digi-Reel format.

Frequently Asked Questions (FAQ)

Q: Can the ISL32172EIBZ directly replace the DS3487M in existing designs?

A: Yes. Both parts share the 4/0 driver configuration, RS422/RS485 protocol support, and 16-SOIC package specification. The ISL32172EIBZ operates within the DS3487M supply voltage range and supports the required operating temperature window. Pin-to-pin compatibility exists for the specified package.

Q: What is the difference between ISL32172EIBZ and ISL32172EIBZ-T?

A: Both parts are electrically identical. The primary difference is packaging format: ISL32172EIBZ is supplied in Tube packaging, while ISL32172EIBZ-T is supplied in Tape & Reel (TR) format. Selection depends on production volume and assembly line requirements.

Q: Does the ST26C31BDR meet the same electrical specifications as the DS3487M?

A: The ST26C31BDR maintains the same 4/0 driver configuration, RS422/RS485 protocol support, and 16-SOIC package. Supply voltage specification is 4.5V to 5.5V, which overlaps with the DS3487M requirement of 4.75V to 5.25V. Operating temperature range is -40°C to 85°C, which encompasses the DS3487M range of 0°C to 70°C.

Q: Are all substitute parts RoHS compliant?

A: Yes. ISL32172EIBZ, ISL32172EIBZ-T, and ST26C31BDR are all ROHS3 compliant, whereas the DS3487M is RoHS non-compliant. This provides regulatory compliance benefits for new designs and production.

Q: What is the moisture sensitivity level (MSL) difference?

A: The DS3487M has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The substitute parts have MSL 3 (168 Hours), requiring standard moisture control during storage and handling. This is standard for modern surface mount components and does not affect functionality in typical manufacturing environments.