TRSF3232CDB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRSF3232CDB is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SSOP surface mount package. This interface IC operates across a 3V to 5.5V supply range with a 1 Mbps data rate and 300 mV receiver hysteresis. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

TRSF3232CDB

Texas InstrumentsIn Stock: 732TRSF3232CDB Datasheet

Current PartRFQ

TRSF3232ECDBR

Texas InstrumentsIn Stock: 1176TRSF3232ECDBR Datasheet

DirectRFQ

MAX3232ECAE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2890MAX3232ECAE+ Datasheet

DirectRFQ

MAX3232ECAE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1563MAX3232ECAE+T Datasheet

DirectRFQ

SP3232EUEA-L/TR

MaxLinear, Inc.In Stock: 2405SP3232EUEA-L/TR Datasheet

UpgradeRFQ

SN75C3232EDB

Texas InstrumentsIn Stock: 1256SN75C3232EDB Datasheet

Parametric EquivalentRFQ

TRSF3232ECDB

Texas InstrumentsIn Stock: 1278TRSF3232ECDB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TRSF3232CDB is determined by strict equivalence across the following critical parameters:

Core Electrical Parameters:

• RS232 protocol compliance
• 2/2 driver/receiver configuration
• Full-duplex operation
• 1 Mbps data rate
• 3V to 5.5V supply voltage range
• 16-SSOP package footprint

Mechanical & Environmental Parameters:

• Surface mount package type
• 16-SSOP (0.209", 5.30mm Width) case dimensions
• RoHS3 compliance
• Moisture Sensitivity Level 1

Substitute parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Substitutes: Parts from the same or equivalent manufacturers with identical electrical and mechanical specifications, differing only in packaging format (tube vs. tape & reel).

Upgrade Substitutes: Parts with enhanced specifications (extended temperature range, active product status) that maintain full backward compatibility with the original part's electrical interface and package footprint.

Parametric Equivalents: Parts from alternative manufacturers meeting all core electrical and mechanical requirements, suitable for direct replacement in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Obsolete Product Continuation): TRSF3232ECDBR and TRSF3232ECDB are Texas Instruments parts with identical electrical specifications to the TRSF3232CDB. Both maintain ROHS3 compliance and the same operating temperature range. TRSF3232ECDBR is available in tape & reel packaging with higher inventory (1150 pcs), while TRSF3232ECDB is available in tube packaging with Last Time Buy status (1214 pcs). These parts are suitable for designs requiring exact parameter matching and Texas Instruments sourcing continuity.

For Active Product Status: MAX3232ECAE+ and MAX3232ECAE+T from Analog Devices Inc./Maxim Integrated are active products with identical electrical performance except for receiver hysteresis (500 mV vs. 300 mV). Both maintain ROHS3 compliance, 3V–5.5V supply range, and 16-SSOP package compatibility. MAX3232ECAE+ is available in tube packaging (2780 pcs), while MAX3232ECAE+T is available in cut tape & Digi-Reel format (1530 pcs). These parts provide long-term supply assurance for new designs.

For Extended Operating Temperature Range: SP3232EUEA-L/TR from MaxLinear, Inc. extends the operating temperature range to -40°C to 85°C while maintaining 300 mV receiver hysteresis and all other core electrical parameters. This part is active with 2300 pcs inventory and is supplied in tape & reel packaging. It is suitable for applications requiring wider temperature operation and long-term availability.

For Parametric Equivalence: SN75C3232EDB from Texas Instruments provides parametric equivalence with identical electrical specifications and 16-SSOP package footprint. This part is obsolete but maintains ROHS3 compliance and the original operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can MAX3232ECAE+ be used as a direct replacement for TRSF3232CDB? A: Yes. Both parts meet the core substitution criteria: 2/2 RS232 transceiver, 1 Mbps data rate, 3V–5.5V supply, 16-SSOP package, and full-duplex operation. The receiver hysteresis difference (500 mV vs. 300 mV) does not affect circuit compatibility. MAX3232ECAE+ is an active product, providing supply continuity advantages.

Q: What is the difference between TRSF3232ECDBR and TRSF3232ECDB? A: Both parts are electrically identical with the same specifications as TRSF3232CDB. The difference is packaging format: TRSF3232ECDBR is supplied in tape & reel (TR) format, while TRSF3232ECDB is supplied in tube format. Tape & reel packaging is typically preferred for automated assembly processes.

Q: Is SP3232EUEA-L/TR compatible with the original TRSF3232CDB design? A: Yes. SP3232EUEA-L/TR maintains all core electrical parameters and 16-SSOP package compatibility. The extended operating temperature range (-40°C to 85°C) is a superset of the original range (0°C to 70°C), making it suitable for designs requiring wider temperature operation. Receiver hysteresis remains at 300 mV, matching the original part.

Q: Why does MAX3232ECAE+ have different receiver hysteresis? A: Receiver hysteresis is a design parameter that varies between manufacturers. The 500 mV hysteresis in MAX3232ECAE+ versus 300 mV in TRSF3232CDB does not affect RS232 protocol compliance or circuit functionality. Both values fall within standard RS232 specifications and are suitable for general-purpose serial communication applications.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts maintain RoHS compliance. TRSF3232ECDBR, TRSF3232ECDB, MAX3232ECAE+, MAX3232ECAE+T, and SN75C3232EDB are ROHS3 compliant. SP3232EUEA-L/TR is RoHS compliant. All parts are suitable for applications requiring RoHS certification.

Q: Which substitute part offers the best long-term availability? A: MAX3232ECAE+ and MAX3232ECAE+T from Analog Devices Inc./Maxim Integrated are active products, providing the longest supply assurance. SP3232EUEA-L/TR from MaxLinear, Inc. is also active. Texas Instruments parts (TRSF3232ECDBR, TRSF3232ECDB, SN75C3232EDB) are classified as obsolete or Last Time Buy, indicating limited future availability.

Q: Can these parts be used interchangeably in existing PCB designs? A: Yes. All substitute parts use the identical 16-SSOP package footprint and pin configuration, allowing direct PCB layout compatibility. No circuit board modifications are required for substitution.