TRS3238CPWR Equivalent & Substitute Parts

Part Overview

The TRS3238CPWR is a full-duplex RS232 transceiver manufactured by Texas Instruments, featuring 5 drivers and 3 receivers in a 28-TSSOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part operates across a 3V to 5.5V supply range with a 250kbps data rate and 300mV receiver hysteresis, suitable for legacy and modern serial communication applications requiring RS232 protocol compliance.

Substiute Parts

TRS3238CPWR

Texas InstrumentsIn Stock: 792TRS3238CPWR Datasheet

Current PartRFQ

MAX3238CPWR

Texas InstrumentsIn Stock: 5995MAX3238CPWR Datasheet

Parametric EquivalentRFQ

MAX3248EEAI+

Analog Devices Inc./Maxim IntegratedIn Stock: 1194MAX3248EEAI+ Datasheet

MFR RecommendedRFQ

SP3238EEY-L

MaxLinear, Inc.In Stock: 2409SP3238EEY-L Datasheet

MFR RecommendedRFQ

SP3238EEY-L/TR

MaxLinear, Inc.In Stock: 8300SP3238EEY-L/TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TRS3238CPWR is determined by the following critical parameters:

Core Functional Parameters:

• Protocol: RS232
• Type: Transceiver
• Number of Drivers/Receivers: 5/3
• Duplex: Full
• Data Rate: 250kbps
• Voltage - Supply: 3V ~ 5.5V

Physical Compatibility Parameters:

• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP or equivalent 28-pin packages

Compliance Parameters:

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

Substitute parts must maintain identical or superior electrical specifications across all core functional parameters. Package variations are acceptable when pin-compatible within the 28-pin TSSOP family. Operating temperature range and receiver hysteresis may vary between substitutes without affecting functional compatibility in standard applications.

Parameter Comparison

Engineering Selection Recommendations

MAX3238CPWR (Texas Instruments) is the primary parametric equivalent, offering identical electrical specifications and package dimensions to the TRS3238CPWR. Both parts share the same 28-TSSOP form factor and operating characteristics. The MAX3238CPWR maintains active product status, ensuring long-term availability and supply chain continuity.

SP3238EEY-L and SP3238EEY-L/TR (MaxLinear, Inc.) provide functional equivalence with extended operating temperature range (-40°C to 85°C) compared to the original part's 0°C to 70°C specification. Both variants maintain the 28-TSSOP package footprint and are suitable for applications requiring broader thermal performance. The SP3238EEY-L/TR variant offers higher inventory availability.

MAX3248EEAI+ (Analog Devices Inc./Maxim Integrated) is functionally compatible but uses a 28-SSOP package (0.209" width) instead of the 28-TSSOP (0.173" width). This package difference requires PCB layout verification before implementation. The part features elevated receiver hysteresis (600mV) and extended operating temperature range, suitable for noise-sensitive environments.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical supply voltage and data rate specifications. Selection should prioritize package compatibility with existing PCB designs and supply chain availability requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX3238CPWR directly replace TRS3238CPWR without PCB modifications?

A: Yes. The MAX3238CPWR is a parametric equivalent with identical package dimensions (28-TSSOP, 0.173" width), pin configuration, and electrical specifications. Direct substitution is possible without PCB layout changes.

Q: What is the difference between SP3238EEY-L and SP3238EEY-L/TR?

A: Both parts are functionally identical with the same electrical specifications and 28-TSSOP package. The primary difference is packaging format: SP3238EEY-L is supplied in Tube packaging, while SP3238EEY-L/TR is supplied in Tape and Reel format. Selection depends on procurement and assembly requirements.

Q: Can MAX3248EEAI+ be used as a direct replacement?

A: MAX3248EEAI+ is functionally compatible but uses a 28-SSOP package (0.209" width) instead of 28-TSSOP (0.173" width). PCB footprint verification is required before implementation. The wider package may not fit existing board layouts designed for the narrower TSSOP variant.

Q: How do receiver hysteresis differences affect substitution?

A: The TRS3238CPWR features 300mV receiver hysteresis, while SP3238 variants provide 500mV and MAX3248EEAI+ provides 600mV. Higher hysteresis improves noise immunity in electrically noisy environments. All values are within RS232 specification tolerances and do not prevent functional substitution.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance or equivalent RoHS certification, meeting environmental and regulatory requirements identical to the original TRS3238CPWR.

Q: What is the significance of product status (Obsolete vs. Active)?

A: The TRS3238CPWR is obsolete, meaning Texas Instruments no longer manufactures or supports this part. All substitute parts listed maintain active product status, ensuring continued availability, technical support, and supply chain reliability for new designs and legacy system maintenance.