TRSF3232CDW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRSF3232CDW is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SOIC surface mount package. This interface IC operates across a 3V to 5.5V supply range with a 1Mbps data rate and 300mV receiver hysteresis. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

TRSF3232CDW

Texas InstrumentsIn Stock: 1054TRSF3232CDW Datasheet

Current PartRFQ

TRSF3232ECDWR

Texas InstrumentsIn Stock: 9825TRSF3232ECDWR Datasheet

DirectRFQ

MAX3232ECWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2308MAX3232ECWE+ Datasheet

DirectRFQ

MAX3232ECWE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2190MAX3232ECWE+T Datasheet

DirectRFQ

ICL3232CBNZ-T

Renesas Electronics CorporationIn Stock: 1350ICL3232CBNZ-T Datasheet

MFR RecommendedRFQ

SN75C3232DW

Texas InstrumentsIn Stock: 12939SN75C3232DW Datasheet

Parametric EquivalentRFQ

SN75C3232EDW

Texas InstrumentsIn Stock: 1074SN75C3232EDW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TRSF3232CDW is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• RS232 protocol with 2/2 driver/receiver configuration
• Full-duplex operation
• 16-SOIC package with 0.295" (7.50mm) width
• Supply voltage range: 3V ~ 5.5V
• Operating temperature: 0°C ~ 70°C
• Surface mount technology
• ROHS3 compliance

Allowable Variations:

• Receiver hysteresis: 300mV (main part) to 500mV (substitute acceptable)
• Data rate: 1Mbps (main part) to 250kbps minimum (substitute acceptable for lower-speed applications)
• Product status: Active or Last Time Buy substitutes are acceptable for obsolete main part
• Packaging format: Tube, Tape & Reel, or Cut Tape acceptable
• Moisture sensitivity level: MSL 1 or MSL 3 acceptable

Substitute parts are grouped into three categories based on their relationship to the main part: direct manufacturer variants, active production equivalents from alternative manufacturers, and parametric equivalents with minor specification differences.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

TRSF3232ECDWR and SN75C3232DW are direct Texas Instruments alternatives with identical electrical specifications to the TRSF3232CDW. Both maintain 1Mbps data rate, 300mV receiver hysteresis, and 0.295" package width. TRSF3232ECDWR is available in Tape & Reel packaging for automated assembly, while SN75C3232DW is supplied in Tube format. Both carry Last Time Buy status, indicating limited future availability.

Active Production Alternatives:

MAX3232ECWE+ and MAX3232ECWE+T from Analog Devices Inc./Maxim Integrated are actively produced equivalents with identical 2/2 configuration, 1Mbps data rate, and package dimensions. The primary difference is 500mV receiver hysteresis compared to 300mV in the main part. This higher hysteresis provides improved noise immunity in electrically noisy environments. MAX3232ECWE+ is supplied in Tube format, while MAX3232ECWE+T uses Cut Tape & Digi-Reel packaging.

Parametric Equivalent with Constraints:

ICL3232CBNZ-T from Renesas Electronics Corporation is an active production part suitable only for applications where data rates do not exceed 250kbps. This part features a narrower 0.154" (3.90mm) package width and MSL 3 moisture sensitivity rating. Use this substitute only when board space constraints justify the reduced data rate capability and when moisture control procedures support MSL 3 handling.

Compliance Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the main part's environmental certifications. All parts are rated for 0°C to 70°C operating temperature and 3V to 5.5V supply voltage.

Frequently Asked Questions (FAQ)

Q: Can I use MAX3232ECWE+ as a direct replacement for TRSF3232CDW?

A: Yes. Both parts share identical 2/2 RS232 transceiver configuration, 1Mbps data rate, 16-SOIC package with 0.295" width, and 3V to 5.5V supply range. The MAX3232ECWE+ features 500mV receiver hysteresis versus 300mV in the TRSF3232CDW. This difference does not prevent substitution; the higher hysteresis improves noise rejection. Verify your application does not require the specific 300mV hysteresis specification before substituting.

Q: What is the difference between TRSF3232ECDWR and SN75C3232DW?

A: Both are Texas Instruments alternatives with identical electrical specifications to the TRSF3232CDW. TRSF3232ECDWR is packaged in Tape & Reel format for automated pick-and-place assembly. SN75C3232DW is supplied in Tube format for manual handling or lower-volume applications. Select based on your assembly process requirements.

Q: Is ICL3232CBNZ-T suitable for my 1Mbps RS232 application?

A: No. ICL3232CBNZ-T is rated for maximum 250kbps data rate. This part is suitable only for applications operating at 250kbps or lower. For 1Mbps operation, use TRSF3232ECDWR, SN75C3232DW, or MAX3232ECWE+ series parts.

Q: Does the narrower package width of ICL3232CBNZ-T affect PCB layout compatibility?

A: Yes. ICL3232CBNZ-T uses a 0.154" (3.90mm) package width compared to 0.295" (7.50mm) for all other substitutes. This narrower width requires PCB footprint modification. Use this part only when board space constraints justify the redesign effort and when your application supports the 250kbps maximum data rate.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the environmental certifications of the TRSF3232CDW.

Q: What packaging options are available for high-volume production?

A: TRSF3232ECDWR and MAX3232ECWE+T are supplied in Tape & Reel and Cut Tape & Digi-Reel formats respectively, both suitable for automated assembly. SN75C3232DW and MAX3232ECWE+ are available in Tube format for lower-volume or manual assembly processes.