TRS3318ECPW Equivalent & Substitute Parts

Part Overview

The TRS3318ECPW is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 20-TSSOP surface mount package. This interface IC operates at 2.25V to 3V supply voltage with a 460Kbps data rate and 300mV receiver hysteresis, designed for embedded communication applications requiring RS232 protocol support.

The TRS3318ECPW carries a Last Time Buy product status, indicating discontinued production. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for new designs or production runs.

Substiute Parts

TRS3318ECPW

Texas InstrumentsIn Stock: 934TRS3318ECPW Datasheet

Current PartRFQ

TRS3318EIPWR

Texas InstrumentsIn Stock: 3856TRS3318EIPWR Datasheet

MFR RecommendedRFQ

MAX3318EAP+

Analog Devices Inc./Maxim IntegratedIn Stock: 2245MAX3318EAP+ Datasheet

MFR RecommendedRFQ

MAX3318ECUP+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3901MAX3318ECUP+T Datasheet

MFR RecommendedRFQ

MAX3318EEUP+

Analog Devices Inc./Maxim IntegratedIn Stock: 3178MAX3318EEUP+ Datasheet

MFR RecommendedRFQ

MAX3316ECUP+

Analog Devices Inc./Maxim IntegratedIn Stock: 1345MAX3316ECUP+ Datasheet

Parametric EquivalentRFQ

MAX3318CPW

Texas InstrumentsIn Stock: 957MAX3318CPW Datasheet

Parametric EquivalentRFQ

MAX3318CUP+

Analog Devices Inc./Maxim IntegratedIn Stock: 761MAX3318CUP+ Datasheet

Parametric EquivalentRFQ

MAX3318ECPW

Texas InstrumentsIn Stock: 1037MAX3318ECPW Datasheet

Parametric EquivalentRFQ

MAX3318ECUP+

Analog Devices Inc./Maxim IntegratedIn Stock: 1322MAX3318ECUP+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TRS3318ECPW is determined by strict parameter matching across the following critical criteria:

Core Electrical Parameters (Must Match):

• Protocol: RS232
• Number of Drivers/Receivers: 2/2
• Duplex: Full
• Data Rate: 460Kbps
• Voltage - Supply: 2.25V ~ 3V
• Receiver Hysteresis: 300 mV

Package & Mechanical Parameters (Must Match):

• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Flexible Parameters (May Vary):

• Operating Temperature range (wider ranges are acceptable for substitution)
• Packaging format (Tube vs. Tape & Reel)
• Product Status (Active parts preferred over Last Time Buy or Obsolete)
• Manufacturer (Texas Instruments or Analog Devices Inc./Maxim Integrated)

Substitute parts are categorized as either MFR Recommended (direct functional equivalents with extended temperature ranges) or Parametric Equivalent (matching all electrical and mechanical specifications).

Parameter Comparison

Engineering Selection Recommendations

MFR Recommended Substitutes (Preferred for New Designs):

TRS3318EIPWR is the primary recommended substitute. This Texas Instruments part maintains identical electrical specifications and 20-TSSOP package geometry while offering extended operating temperature range (-40°C to 85°C) and Active product status. The Tape & Reel packaging format supports high-volume production requirements.

MAX3318EEUP+ and MAX3318ECUP+T are secondary MFR recommended options from Analog Devices Inc./Maxim Integrated. Both maintain full electrical and mechanical compatibility with the original part. MAX3318EEUP+ provides extended temperature range (-40°C to 85°C) in Tube packaging, while MAX3318ECUP+T offers Tape & Reel format with standard temperature range (0°C to 70°C). Both carry Active product status.

Parametric Equivalent Substitutes (Compatible Alternatives):

MAX3318ECUP+, MAX3316ECUP+, MAX3318CPW, and MAX3318ECPW are parametric equivalents matching all electrical and mechanical specifications. These parts are suitable for direct replacement in existing designs. MAX3318ECUP+ and MAX3318ECPW are Active status parts. MAX3316ECUP+ and MAX3318CPW are Active status alternatives. All maintain 20-TSSOP package compatibility and identical electrical performance.

Parts to Avoid:

MAX3318CUP+ carries Obsolete product status and should not be selected for new designs or long-term production planning.

MAX3318EAP+ uses 20-SSOP package (5.30mm width) instead of 20-TSSOP (4.40mm width), creating potential PCB layout incompatibility and should only be considered if board redesign is acceptable.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original TRS3318ECPW specification.

Frequently Asked Questions (FAQ)

Q: Can MAX3318EAP+ replace TRS3318ECPW directly on the PCB?

A: No. MAX3318EAP+ uses 20-SSOP package (5.30mm width) while TRS3318ECPW uses 20-TSSOP package (4.40mm width). Physical footprint differences prevent direct board-level substitution without PCB redesign.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging is suitable for low-to-medium volume applications and manual assembly. Tape & Reel format is optimized for automated pick-and-place assembly in high-volume production. Both formats contain identical die and electrical performance. Selection depends on manufacturing process requirements.

Q: Is TRS3318EIPWR suitable for applications requiring 0°C to 70°C operation?

A: Yes. TRS3318EIPWR specifies -40°C to 85°C operating range, which encompasses the 0°C to 70°C requirement. Extended temperature range provides additional design margin and environmental tolerance.

Q: Why should MAX3318CUP+ be avoided?

A: MAX3318CUP+ carries Obsolete product status, indicating discontinued manufacturing and limited future availability. New designs should use Active status parts such as MAX3318ECUP+ or TRS3318EIPWR to ensure long-term supply chain continuity.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, matching the environmental and regulatory specifications of the original TRS3318ECPW.

Q: What is the primary advantage of TRS3318EIPWR over other substitutes?

A: TRS3318EIPWR is manufactured by Texas Instruments (original manufacturer), maintains identical electrical specifications, offers extended operating temperature range (-40°C to 85°C), carries Active product status, and is available in Tape & Reel format for production scalability.

Q: Can parametric equivalent parts be used interchangeably with MFR recommended substitutes?

A: Yes, within the specified operating conditions. Parametric equivalents match all critical electrical and mechanical parameters. Selection between MFR recommended and parametric equivalent parts should be based on product status, temperature range requirements, packaging format, and supply chain availability.