SN65C3232EDW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SN65C3232EDW is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed 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, designed for serial communication applications requiring RS232 protocol compliance.

The SN65C3232EDW carries a Last Time Buy product status, indicating discontinued production. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Substiute Parts

SN65C3232EDW

Texas InstrumentsIn Stock: 2085SN65C3232EDW Datasheet

Current PartRFQ

TRSF3232EIDR

Texas InstrumentsIn Stock: 3563TRSF3232EIDR Datasheet

MFR RecommendedRFQ

SN65C3232DW

Texas InstrumentsIn Stock: 12812SN65C3232DW Datasheet

Parametric EquivalentRFQ

ICL3232ECBZ

Renesas Electronics CorporationIn Stock: 2201ICL3232ECBZ Datasheet

MFR RecommendedRFQ

ICL3232ECBZ-T

Renesas Electronics CorporationIn Stock: 1177ICL3232ECBZ-T Datasheet

MFR RecommendedRFQ

MAX3232CWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2628MAX3232CWE+ Datasheet

MFR RecommendedRFQ

MAX3232CWE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5466MAX3232CWE+T Datasheet

MFR RecommendedRFQ

MAX3232ECWE+

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

MFR RecommendedRFQ

MAX3232ECWE+T

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

MFR RecommendedRFQ

MAX3232EEWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 837MAX3232EEWE+ Datasheet

MFR RecommendedRFQ

MAX3232EEWE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2671MAX3232EEWE+T Datasheet

MFR RecommendedRFQ

MAX3232EWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 3127MAX3232EWE+ Datasheet

MFR RecommendedRFQ

MAX3232EWE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1987MAX3232EWE+T Datasheet

MFR RecommendedRFQ

SP202ECT-L

MaxLinear, Inc.In Stock: 2325SP202ECT-L Datasheet

MFR RecommendedRFQ

SP202ECT-L/TR

MaxLinear, Inc.In Stock: 2625SP202ECT-L/TR Datasheet

MFR RecommendedRFQ

SP202EET-L/TR

MaxLinear, Inc.In Stock: 23228SP202EET-L/TR Datasheet

MFR RecommendedRFQ

SP232ACT-L/TR

MaxLinear, Inc.In Stock: 3470SP232ACT-L/TR Datasheet

MFR RecommendedRFQ

SP232ECT-L/TR

MaxLinear, Inc.In Stock: 2725SP232ECT-L/TR Datasheet

MFR RecommendedRFQ

SP232EET-L/TR

MaxLinear, Inc.In Stock: 40391SP232EET-L/TR Datasheet

MFR RecommendedRFQ

SP3232ECT-L/TR

MaxLinear, Inc.In Stock: 1468SP3232ECT-L/TR Datasheet

MFR RecommendedRFQ

SP3232EET-L

MaxLinear, Inc.In Stock: 1873SP3232EET-L Datasheet

MFR RecommendedRFQ

SP3232EET-L/TR

MaxLinear, Inc.In Stock: 23954SP3232EET-L/TR Datasheet

MFR RecommendedRFQ

ST3232BDR

UMWIn Stock: 50258ST3232BDR Datasheet

MFR RecommendedRFQ

ST3232CDR

STMicroelectronicsIn Stock: 54216ST3232CDR Datasheet

MFR RecommendedRFQ

TRSF3232EIDW

Texas InstrumentsIn Stock: 1371TRSF3232EIDW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN65C3232EDW is determined by the following critical parameters:

• Protocol: RS232 (mandatory match)
• Number of Drivers/Receivers: 2/2 (mandatory match)
• Duplex: Full (mandatory match)
• Package / Case: 16-SOIC form factor (mandatory match)
• Voltage Supply Range: 3V ~ 5.5V (mandatory match)
• Mounting Type: Surface Mount (mandatory match)

Substitute parts are grouped into two categories:

Direct Parametric Equivalents: Parts matching all critical electrical and mechanical parameters, including data rate (1Mbps), receiver hysteresis (300mV), and operating temperature range (-40°C ~ 85°C).

Functional Equivalents with Parameter Variations: Parts meeting core protocol, driver/receiver count, duplex mode, and package requirements but with allowable variations in data rate, receiver hysteresis, or operating temperature range. These parts maintain RS232 2/2 full-duplex functionality in the 16-SOIC package within the 3V to 5.5V supply specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Parametric Match:

TRSF3232EIDR (Texas Instruments, Active status) provides the closest electrical and mechanical equivalence to SN65C3232EDW. This part maintains identical protocol, driver/receiver configuration, data rate (1Mbps), receiver hysteresis (300mV), and operating temperature range (-40°C ~ 85°C). The primary difference is packaging format (Cut Tape & Digi-Reel versus Tube) and minor package width variation (3.90mm versus 7.50mm). Both are 16-SOIC surface mount packages with identical pin configurations. Active product status ensures long-term availability.

SN65C3232DW (Texas Instruments, Last Time Buy) offers identical electrical specifications and package dimensions but shares the same Last Time Buy status as the original part, limiting its utility for long-term production planning.

Secondary Recommendations - Functional Equivalents with Extended Temperature Range:

MAX3232EEWE+ and MAX3232EEWE+T (Analog Devices Inc./Maxim Integrated, Active status) maintain the -40°C ~ 85°C operating temperature range matching the SN65C3232EDW. These parts operate at 250kbps data rate with 500mV receiver hysteresis, representing acceptable parameter variations for applications not requiring the full 1Mbps capability. Active product status and established supply chain support make these viable long-term alternatives.

Tertiary Recommendations - Functional Equivalents with Restricted Temperature Range:

MAX3232ECWE+ and MAX3232ECWE+T (Analog Devices Inc./Maxim Integrated, Active status) support 1Mbps data rate matching the original part but operate within 0°C ~ 70°C temperature range. These are suitable for applications not requiring extended low-temperature operation below 0°C or high-temperature operation above 70°C.

MAX3232CWE+ and MAX3232CWE+T (Analog Devices Inc./Maxim Integrated, Active status) operate at 235Kbps with 300mV receiver hysteresis within 0°C ~ 70°C range. These are appropriate for lower-speed serial communication applications within the restricted temperature band.

ICL3232ECBZ and ICL3232ECBZ-T (Renesas Electronics Corporation, Active status) provide 250kbps operation with 500mV receiver hysteresis within 0°C ~ 70°C range. These represent the most conservative parameter set among available substitutes.

All recommended substitutes maintain ROHS3 compliance, MSL 1 or MSL 3 ratings, and 3V ~ 5.5V supply voltage compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can TRSF3232EIDR directly replace SN65C3232EDW in existing designs?

A: TRSF3232EIDR provides direct electrical equivalence with identical protocol, driver/receiver count, data rate, receiver hysteresis, and operating temperature range. The 16-SOIC package pinout is identical. The primary consideration is packaging format: TRSF3232EIDR is supplied in Cut Tape & Digi-Reel format while SN65C3232EDW is supplied in Tube format. PCB layout and assembly processes remain unchanged.

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

A: Receiver hysteresis determines the voltage differential required for input signal transitions. The SN65C3232EDW specifies 300mV hysteresis. Substitute parts with 500mV hysteresis (ICL3232ECBZ, MAX3232ECWE+, MAX3232EEWE+) require larger input signal swings for reliable detection. This affects noise immunity and signal integrity in applications with marginal RS232 signal levels. Parts with matching 300mV hysteresis (TRSF3232EIDR, MAX3232CWE+) maintain identical input threshold behavior.

Q: How do data rate differences affect substitution decisions?

A: The SN65C3232EDW supports 1Mbps data rate. Substitute parts with lower data rates (250kbps for ICL3232ECBZ and MAX3232EEWE+; 235Kbps for MAX3232CWE+) are suitable for applications operating at or below their specified rates. Applications requiring full 1Mbps capability must use TRSF3232EIDR, MAX3232ECWE+, or SN65C3232DW.

Q: What are the implications of operating temperature range restrictions?

A: The SN65C3232EDW operates from -40°C to 85°C. Substitute parts with restricted ranges (0°C ~ 70°C for ICL3232ECBZ, MAX3232CWE+, MAX3232ECWE+) are unsuitable for applications requiring operation below 0°C or above 70°C. MAX3232EEWE+ and MAX3232EEWE+T maintain the full -40°C ~ 85°C range. Verify application temperature requirements before selecting substitutes with narrower operating ranges.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance certification, matching the environmental compliance status of SN65C3232EDW. Moisture sensitivity levels vary between MSL 1 (unlimited) and MSL 3 (168 hours), affecting storage and handling requirements. Parts with MSL 1 rating (TRSF3232EIDR, MAX3232 series) require less stringent moisture control than MSL 3 parts (ICL3232ECBZ).

Q: What packaging format differences exist among substitutes?

A: All substitute parts use 16-SOIC surface mount packages with identical pinout. Physical package width varies between 3.90mm (TRSF3232EIDR) and 7.50mm (all others). Packaging supply formats differ: Tube, Cut Tape & Digi-Reel, or Tape & Reel. These differences affect procurement, storage, and assembly processes but do not impact electrical functionality or PCB layout.

Q: Which substitute offers the best long-term availability?

A: TRSF3232EIDR, MAX3232ECWE+, MAX3232ECWE+T, MAX3232EEWE+, MAX3232EEWE+T, MAX3232CWE+, and MAX3232CWE+T all carry Active product status, indicating ongoing production and supply chain support. SN65C3232DW and the original SN65C3232EDW both carry Last Time Buy status, limiting future availability. For new designs and long-term production, select from parts with Active status.