TRS3318CPWRG4 Equivalent & Substitute Parts

Part Overview

The TRS3318CPWRG4 is a full-duplex RS232 transceiver interface IC manufactured by Texas Instruments, featuring 2 drivers and 2 receivers in a 20-TSSOP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The device operates across a 2.25V to 3V supply voltage range with a maximum data rate of 460 Kbps and 300 mV receiver hysteresis, suitable for legacy RS232 communication applications requiring low-voltage operation.

Substiute Parts

TRS3318CPWRG4

Texas InstrumentsIn Stock: 982TRS3318CPWRG4 Datasheet

Current PartRFQ

MAX3318CPWR

Texas InstrumentsIn Stock: 739MAX3318CPWR Datasheet

Parametric EquivalentRFQ

MAX3318ECPWR

Texas InstrumentsIn Stock: 3726MAX3318ECPWR Datasheet

Parametric EquivalentRFQ

TRS3318ECPWR

Texas InstrumentsIn Stock: 3572TRS3318ECPWR Datasheet

Parametric EquivalentRFQ

MAX3318CUP+

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

MFR RecommendedRFQ

MAX3318EAP+

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

MFR RecommendedRFQ

MAX3318ECUP+

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

MFR RecommendedRFQ

MAX3318EEUP+

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

MFR RecommendedRFQ

TRS3318ECPW

Texas InstrumentsIn Stock: 934TRS3318ECPW Datasheet

MFR RecommendedRFQ

MAX3316ECUP+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3811MAX3316ECUP+T Datasheet

Parametric EquivalentRFQ

MAX3318ECUP+T

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TRS3318CPWRG4 is determined by strict parametric equivalence across the following critical criteria:

Primary Substitution Parameters:

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

Substitute parts are grouped into two categories based on product status and packaging configuration:

Parametric Equivalents (Same electrical and mechanical specifications): MAX3318CPWR, MAX3318ECPWR, TRS3318ECPWR, and MAX3316ECUP+T maintain identical functional parameters and package specifications as the main part.

Manufacturer Recommended Alternatives (Extended operating temperature or package variants): MAX3318CUP+, MAX3318EAP+, MAX3318ECUP+, MAX3318EEUP+, TRS3318ECPW, and MAX3318ECUP+T provide functional equivalence with variations in operating temperature range or packaging format.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Operating Temperature Range):

MAX3318CPWR is the primary substitute, offering active product status with identical electrical specifications and 20-TSSOP packaging. This part is available in Tape & Reel format with 701 units in stock.

MAX3318ECUP+ and MAX3318ECUP+T provide active product status with matching specifications and are available in Tube and Tape & Reel packaging respectively, with 1,214 and 3,800 units in stock.

For Extended Temperature Range Applications:

MAX3318EAP+ and MAX3318EEUP+ extend the operating temperature range to -40°C ~ 85°C while maintaining all other electrical parameters. MAX3318EAP+ uses 20-SSOP packaging (0.209", 5.30mm Width), which differs from the original 20-TSSOP footprint and requires PCB layout verification. MAX3318EEUP+ maintains the 20-TSSOP package with 3,140 units available.

For Legacy System Continuity:

TRS3318ECPWR and TRS3318ECPW maintain Texas Instruments manufacturer designation with Last Time Buy status, providing continuity for systems requiring TI-specific sourcing. Both parts are available with 3,530 and 882 units respectively.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical functional parameters for RS232 2/2 full-duplex transceiver operation.

Frequently Asked Questions (FAQ)

Q: Can MAX3318EAP+ be used as a direct replacement for TRS3318CPWRG4?

A: MAX3318EAP+ is functionally equivalent for RS232 2/2 transceiver operation but uses 20-SSOP packaging (0.209", 5.30mm Width) instead of the original 20-TSSOP (0.173", 4.40mm Width). PCB footprint compatibility must be verified before substitution. The extended operating temperature range (-40°C ~ 85°C) provides additional thermal margin beyond the original 0°C ~ 70°C specification.

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

A: Tape & Reel (TR) packaging is used for automated assembly processes and high-volume production. Tube packaging is used for manual assembly or lower-volume applications. Both formats contain identical components; the difference is in handling and storage configuration. Selection depends on manufacturing process requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original TRS3318CPWRG4 specifications.

Q: Why is the TRS3318CPWRG4 marked as obsolete?

A: The original part is obsolete, requiring substitution for new designs or system maintenance. Active alternatives such as MAX3318CPWR, MAX3318ECUP+, and MAX3318ECUP+T provide identical functionality with ongoing manufacturer support.

Q: Can I substitute parts with different operating temperature ranges?

A: Yes, if your application operates within the narrower temperature range (0°C ~ 70°C). Parts with extended temperature ranges (-40°C ~ 85°C) are backward compatible for standard temperature applications and provide additional thermal margin.

Q: What inventory levels are available for immediate procurement?

A: MAX3318ECPWR offers 3,700 units, MAX3318EEUP+ offers 3,140 units, and MAX3316ECUP+T offers 3,800 units in stock. MAX3318CPWR provides 701 units with active product status.