MAX3318ECPW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX3318ECPW is a full-duplex RS232 transceiver with 2 drivers and 2 receivers, packaged in a 20-TSSOP surface mount configuration. This interface IC operates at 2.25V to 3V supply voltage with a data rate of 460 Kbps and 300 mV receiver hysteresis. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain flexibility for new production runs and legacy system support.

Substiute Parts

MAX3318ECPW

Texas InstrumentsIn Stock: 1037MAX3318ECPW Datasheet

Current PartRFQ

MAX3318EIPWR

Texas InstrumentsIn Stock: 3636MAX3318EIPWR 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

MAX3318ECUP+

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

Parametric EquivalentRFQ

TRS3318ECPW

Texas InstrumentsIn Stock: 934TRS3318ECPW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX3318ECPW is determined by strict equivalence in the following critical parameters:

• Protocol: RS232
• Number of Drivers/Receivers: 2/2 configuration
• Duplex: Full
• Data Rate: 460 Kbps minimum
• Voltage Supply Range: 2.25V ~ 3V
• Receiver Hysteresis: 300 mV
• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• MSL: 1 (Unlimited)

Substitute parts are categorized as follows:

MFR Recommended Substitutes: Parts with identical electrical specifications and active product status, differing only in packaging format (Cut Tape, Tape & Reel, or SSOP package variant).

Parametric Equivalents: Parts with identical core electrical parameters but different product status (Active or Obsolete) or minor package variations that maintain functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (MFR Recommended):

MAX3318EIPWR is the preferred substitute for new designs. It maintains identical electrical specifications with extended operating temperature range (-40°C ~ 85°C) and active product status. Higher inventory availability (3600 pcs) ensures supply continuity.

MAX3318ECUP+T and MAX3318EEUP+ are direct functional equivalents with active status. MAX3318ECUP+T is supplied on Tape & Reel, while MAX3318EEUP+ is supplied in Tube packaging. Both support the original 0°C ~ 70°C operating range or extended -40°C ~ 85°C range respectively.

Secondary Substitutes (Parametric Equivalents):

MAX3318CPW and MAX3318ECUP+ are parametric equivalents with active product status and identical electrical performance. Both are available in Tube packaging with 0°C ~ 70°C operating temperature range.

MAX3316ECUP+ is a parametric equivalent from the MAX3316 base product family. It maintains all critical electrical parameters and operates within the 0°C ~ 70°C range.

Not Recommended for New Designs:

MAX3318CUP+ carries Obsolete product status and should not be selected for new production despite available inventory.

TRS3318ECPW and MAX3318ECPW are both Last Time Buy parts and should be phased out in favor of Active status alternatives.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical mechanical mounting characteristics.

Frequently Asked Questions (FAQ)

Q: Can MAX3318EIPWR replace MAX3318ECPW directly in existing designs?

A: Yes. MAX3318EIPWR is electrically identical and pin-compatible. The extended operating temperature range (-40°C ~ 85°C) provides broader environmental capability than the original 0°C ~ 70°C specification. Verify your application does not require the specific 0°C ~ 70°C range limitation before substitution.

Q: What is the difference between 20-TSSOP and 20-SSOP packages?

A: Both are 20-pin surface mount packages with identical pin pitch and electrical connectivity. The 20-TSSOP (0.173" width) and 20-SSOP (0.209" width) differ in body width. PCB layout and footprint must accommodate the specific package width. MAX3318EAP+ uses 20-SSOP and requires footprint verification before substitution.

Q: Why should I avoid MAX3318CUP+ despite available inventory?

A: MAX3318CUP+ carries Obsolete product status, indicating manufacturer end-of-life and no further production. While current inventory exists, future availability is not guaranteed. Active status parts ensure long-term supply chain reliability.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original MAX3318ECPW specifications.

Q: What packaging options are available for substitutes?

A: Substitutes are available in Tube, Cut Tape (CT) & Digi-Reel, and Tape & Reel (TR) packaging formats. Select based on your assembly process requirements. Tube packaging suits lower-volume manual assembly; Tape & Reel suits automated pick-and-place operations.

Q: Can I use TRS3318ECPW as a substitute?

A: TRS3318ECPW is a parametric equivalent from a different base product family (TRS3318 vs. MAX3318). While electrically compatible, it carries Last Time Buy status identical to the original part. It is not recommended for new designs; select Active status alternatives instead.