TRS3238IPWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3238IPWR is a full-duplex RS232 transceiver manufactured by Texas Instruments, designed for serial communication applications requiring 5 drivers and 3 receivers in a 28-TSSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement capability.

Substiute Parts

TRS3238IPWR

Texas InstrumentsIn Stock: 2787TRS3238IPWR Datasheet

Current PartRFQ

MAX3238IPWR

Texas InstrumentsIn Stock: 89244MAX3238IPWR 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 TRS3238IPWR is determined by strict adherence to the following parameters:

Critical Parameters for Direct Substitution:

• Protocol: RS232
• Number of Drivers/Receivers: 5/3
• Duplex Mode: Full
• Data Rate: 250 kbps
• Voltage Supply Range: 3V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Package Compatibility Considerations:

• Primary package match: 28-TSSOP (0.173", 4.40mm Width)
• Alternative package: 28-SSOP (0.209", 5.30mm Width) with PCB layout verification required

Parameter Variance Allowed:

• Receiver Hysteresis: 300 mV (main part) to 600 mV (substitute parts) — acceptable variance for RS232 protocol compliance
• Product Status: Obsolete to Active — substitutes must be active or current production

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitute: MAX3238IPWR

The MAX3238IPWR is the optimal substitute for the obsolete TRS3238IPWR. This part maintains identical electrical specifications, including receiver hysteresis of 300 mV, and uses the same 28-TSSOP package. Both parts are manufactured by Texas Instruments, ensuring design continuity and compatibility. The MAX3238IPWR is in active production with 89,188 units in stock, providing supply security. ROHS3 compliance and MSL 1 rating match the original specification.

Alternative Substitute: SP3238EEY-L or SP3238EEY-L/TR

The SP3238EEY-L and SP3238EEY-L/TR, manufactured by MaxLinear, Inc., are functionally equivalent alternatives. Both maintain the 28-TSSOP package footprint and all critical electrical parameters. The receiver hysteresis specification differs at 500 mV compared to the original 300 mV, which remains within acceptable RS232 protocol tolerances. Both parts are in active production with adequate inventory availability. RoHS compliance is confirmed for both variants.

Secondary Alternative: MAX3248EEAI+

The MAX3248EEAI+ from Analog Devices Inc./Maxim Integrated is a functional equivalent with all critical parameters matching the TRS3238IPWR. This part uses a 28-SSOP package (0.209", 5.30mm Width) instead of the 28-TSSOP, requiring PCB layout verification before implementation. The receiver hysteresis specification is 600 mV. This part is in active production with 1,124 units in stock and maintains ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can MAX3238IPWR directly replace TRS3238IPWR without PCB modifications?

A: Yes. The MAX3238IPWR is a direct pin-for-pin replacement with identical electrical specifications and the same 28-TSSOP package. No PCB layout changes are required.

Q: What is the significance of receiver hysteresis differences between substitute parts?

A: Receiver hysteresis affects input signal noise immunity. The TRS3238IPWR specifies 300 mV, while substitutes range from 300 mV to 600 mV. All values are within RS232 protocol specifications and do not affect functional compatibility in standard applications.

Q: Can MAX3248EEAI+ be used as a substitute despite the different package?

A: The MAX3248EEAI+ uses a 28-SSOP package instead of 28-TSSOP. While electrically equivalent, this requires PCB layout verification to confirm pin-to-pad alignment and spacing compatibility. Consult PCB design documentation before implementation.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed maintain RoHS compliance. The TRS3238IPWR and MAX3238IPWR are ROHS3 compliant. SP3238EEY-L, SP3238EEY-L/TR, and MAX3248EEAI+ are RoHS compliant.

Q: What is the inventory status of substitute parts?

A: MAX3238IPWR has 89,188 units in stock. SP3238EEY-L has 2,300 units. SP3238EEY-L/TR has 8,238 units. MAX3248EEAI+ has 1,124 units. All parts are available for immediate procurement.

Q: Do substitute parts maintain the same operating temperature range?

A: Yes. All substitute parts operate across the -40°C to 85°C temperature range, matching the TRS3238IPWR specification.

Q: Is moisture sensitivity level identical across all parts?

A: Yes. All parts, including the main part and all substitutes, have MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints.