DS34C87TMX Equivalent & Substitute Parts

Part Overview

The DS34C87TMX is a 4/0 Driver RS422/RS485 interface IC in a 16-SOIC surface mount package manufactured by Texas Instruments. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure long-term component availability for new production runs and system maintenance.

Substiute Parts

DS34C87TMX

Texas InstrumentsIn Stock: 7581DS34C87TMX Datasheet

Current PartRFQ

DS34C87TMX/NOPB

Texas InstrumentsIn Stock: 37682DS34C87TMX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS34C87TMX is determined by strict equivalence across the following critical parameters:

• Protocol compatibility: RS422/RS485 interface standards
• Driver/receiver configuration: 4/0 (4 drivers, 0 receivers)
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Package type: 16-SOIC surface mount
• Pin-to-pin compatibility: Identical pinout and electrical characteristics

The DS34C87TMX/NOPB is the direct active equivalent, maintaining identical electrical specifications and package configuration while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The DS34C87TMX/NOPB is the direct functional equivalent for the obsolete DS34C87TMX. Selection of the DS34C87TMX/NOPB is based on:

• Identical electrical and functional specifications across all critical parameters
• Active product status ensuring ongoing availability and supply chain continuity
• ROHS3 compliance, meeting current regulatory requirements for new designs and production
• Equivalent moisture sensitivity rating and REACH compliance status
• Pin-compatible 16-SOIC package with identical mechanical footprint

For applications currently using the DS34C87TMX, transition to DS34C87TMX/NOPB requires no circuit modifications or design changes.

Frequently Asked Questions (FAQ)

Q: Can DS34C87TMX/NOPB be used as a direct replacement for DS34C87TMX?

A: Yes. The DS34C87TMX/NOPB is a direct pin-for-pin and functionally equivalent replacement. Both parts share identical electrical specifications, supply voltage requirements, operating temperature range, and 16-SOIC package configuration.

Q: What is the difference between DS34C87TMX and DS34C87TMX/NOPB?

A: The primary differences are product status and compliance certifications. DS34C87TMX is obsolete and RoHS non-compliant, while DS34C87TMX/NOPB is active and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout and mechanical footprint.

Q: What supply voltage does this driver require?

A: Both the DS34C87TMX and DS34C87TMX/NOPB operate with a supply voltage range of 4.5V to 5.5V.

Q: What protocols does this driver support?

A: This is a 4/0 driver supporting RS422 and RS485 serial communication protocols.

Q: Is moisture sensitivity a concern for these parts?

A: Both parts have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life without moisture control requirements.