TRSF3238IPWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRSF3238IPWR is a 5/3 transceiver IC implementing full RS232 protocol in a 28-TSSOP surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance. Substitute parts must maintain electrical compatibility across key parameters including supply voltage range, data rate capability, receiver hysteresis, operating temperature range, and physical package dimensions.

Substiute Parts

TRSF3238IPWR

Texas InstrumentsIn Stock: 1893TRSF3238IPWR Datasheet

Current PartRFQ

MAX3238EIPWR

Texas InstrumentsIn Stock: 3360MAX3238EIPWR Datasheet

MFR RecommendedRFQ

SN65C3238PWR

Texas InstrumentsIn Stock: 4097SN65C3238PWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TRSF3238IPWR is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• RS232 protocol implementation
• 5/3 driver/receiver configuration
• Full duplex operation
• 28-TSSOP package footprint and pinout compatibility
• Supply voltage range: 3V to 5.5V
• Operating temperature range: -40°C to 85°C
• Receiver hysteresis: 300 mV

Acceptable Variation:

• Data rate capability may exceed 1 Mbps (backward compatible)
• Packaging format (Tape & Reel vs. Cut Tape) does not affect electrical compatibility
• Product status (Obsolete vs. Active) does not affect functional substitution

The substitute parts identified—MAX3238EIPWR and SN65C3238PWR—meet all mandatory matching parameters and are therefore electrically and mechanically interchangeable with the TRSF3238IPWR.

Parameter Comparison

Engineering Selection Recommendations

SN65C3238PWR is the primary substitute for new designs and production continuity. This part maintains full electrical and mechanical compatibility with the TRSF3238IPWR while offering active product status, ensuring long-term availability and manufacturing support. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are equivalent.

MAX3238EIPWR is a secondary equivalent option. While electrically compatible across all critical parameters, this part is classified as obsolete and operates at a reduced data rate of 400 kbps compared to the 1 Mbps capability of the primary part. For applications requiring maximum data rate performance, SN65C3238PWR is preferred. Both parts share identical supply voltage, temperature range, and package specifications.

Frequently Asked Questions (FAQ)

Q: Can MAX3238EIPWR be used in place of TRSF3238IPWR in existing designs?

A: Yes. The MAX3238EIPWR is electrically and mechanically compatible. The 400 kbps data rate specification is lower than the 1 Mbps capability of the TRSF3238IPWR, but this represents a conservative rating and does not prevent substitution in applications operating at or below 1 Mbps.

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

A: Packaging format affects handling and storage logistics but does not impact electrical performance or PCB assembly compatibility. Both formats contain identical die and lead configurations suitable for surface mount assembly.

Q: Are all three parts pin-compatible?

A: Yes. All three parts—TRSF3238IPWR, MAX3238EIPWR, and SN65C3238PWR—use the 28-TSSOP package with identical pinout and footprint dimensions (0.173", 4.40mm width).

Q: Why is SN65C3238PWR recommended over MAX3238EIPWR?

A: SN65C3238PWR maintains active product status, ensuring continued manufacturing availability and supply chain stability. Both parts are functionally equivalent; the recommendation is based on long-term production viability.

Q: Do these substitutes require PCB layout modifications?

A: No. All substitute parts use the 28-TSSOP package with identical footprint and pinout. Direct PCB substitution is possible without layout changes.

Q: Are there compliance or certification differences between these parts?

A: No. All three parts carry identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and EAR99 classification.