TRSF3232CD RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRSF3232CD is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The device operates across a 3V to 5.5V supply range with a 1Mbps data rate capability and is suitable for legacy serial communication applications requiring RS232 protocol compliance.

Substiute Parts

TRSF3232CD

Texas InstrumentsIn Stock: 786TRSF3232CD Datasheet

Current PartRFQ

TRSF3232ECDR

Texas InstrumentsIn Stock: 4737TRSF3232ECDR Datasheet

DirectRFQ

ICL3232CBNZ

Renesas Electronics CorporationIn Stock: 9936ICL3232CBNZ Datasheet

DirectRFQ

ICL3232CBNZ-T

Renesas Electronics CorporationIn Stock: 1350ICL3232CBNZ-T Datasheet

DirectRFQ

ICL3232ECBNZ

Renesas Electronics CorporationIn Stock: 2378ICL3232ECBNZ Datasheet

DirectRFQ

ICL3232ECBNZ-T

Renesas Electronics CorporationIn Stock: 17823ICL3232ECBNZ-T Datasheet

DirectRFQ

SP3232EBCN-L

MaxLinear, Inc.In Stock: 1382SP3232EBCN-L Datasheet

DirectRFQ

SP3232EBCN-L/TR

MaxLinear, Inc.In Stock: 30407SP3232EBCN-L/TR Datasheet

DirectRFQ

SP3232EUCN-L/TR

MaxLinear, Inc.In Stock: 32960SP3232EUCN-L/TR Datasheet

DirectRFQ

ST3232ECDR

STMicroelectronicsIn Stock: 24063ST3232ECDR Datasheet

DirectRFQ

SP3232EUCN-L

MaxLinear, Inc.In Stock: 1508SP3232EUCN-L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TRSF3232CD is determined by strict equivalence across the following critical parameters:

• Protocol: RS232 (mandatory)
• Number of Drivers/Receivers: 2/2 (mandatory)
• Duplex: Full (mandatory)
• Package / Case: 16-SOIC (0.154", 3.90mm Width) (mandatory)
• Voltage - Supply: 3V ~ 5.5V (mandatory)
• Operating Temperature: 0°C ~ 70°C (mandatory)
• Mounting Type: Surface Mount (mandatory)

Substitute parts are grouped into two categories:

Direct Substitutes (Pin-Compatible, Identical Electrical Performance): Parts meeting all mandatory parameters with matching data rate (1Mbps) and receiver hysteresis (300 mV).

Parametric Equivalents (Functional Compatibility with Minor Variations): Parts meeting all mandatory parameters but with reduced data rate (250kbps) or different receiver hysteresis (500 mV). These parts are functionally compatible in applications not requiring the full 1Mbps data rate specification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (1Mbps Data Rate Required):

TRSF3232ECDR is the primary active substitute from Texas Instruments, maintaining identical electrical specifications and data rate performance. This part is ROHS3 compliant with MSL 1 rating and available in Cut Tape & Digi-Reel packaging.

SP3232EUCN-L and SP3232EUCN-L/TR from MaxLinear provide equivalent 1Mbps performance with ROHS3 compliance. These parts offer higher inventory availability and flexible packaging options (Tube or Tape & Reel). MSL rating is 2 (1 Year), suitable for standard manufacturing environments.

For Reduced Data Rate Applications (250kbps Acceptable):

ICL3232CBNZ-T and ICL3232ECBNZ-T from Renesas Electronics are active parts with Cut Tape & Digi-Reel packaging. Both maintain the 3V to 5.5V supply range and 0°C to 70°C operating temperature. ICL3232CBNZ-T features 300 mV receiver hysteresis matching the original specification, while ICL3232ECBNZ-T provides 500 mV hysteresis for applications requiring increased noise immunity.

SP3232EBCN-L/TR from MaxLinear offers 250kbps performance with Tape & Reel packaging and the highest inventory availability (30,300 pcs). MSL 2 rating and ROHS3 compliance ensure compatibility with modern manufacturing processes.

ST3232ECDR from STMicroelectronics provides 250kbps operation with 500 mV receiver hysteresis and is available in Cut Tape & Digi-Reel packaging with substantial inventory (24,020 pcs).

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original TRSF3232CD.

Frequently Asked Questions (FAQ)

Q: Can I use a 250kbps substitute part in place of the TRSF3232CD?

A: Yes, if your application does not require the full 1Mbps data rate. The 250kbps parts (ICL3232 series, SP3232EBCN-L series, ST3232ECDR) are functionally compatible and meet all mandatory electrical and mechanical parameters. Confirm that your serial communication protocol operates at or below 250kbps before selection.

Q: What is the difference between receiver hysteresis values of 300 mV and 500 mV?

A: Receiver hysteresis determines the voltage difference between the rising and falling threshold levels of the input comparator. Higher hysteresis (500 mV) provides increased noise immunity in electrically noisy environments but may reduce sensitivity to weak input signals. The TRSF3232CD specifies 300 mV. Parts with 500 mV hysteresis (ICL3232ECBNZ, ICL3232ECBNZ-T, ST3232ECDR) are suitable for applications with marginal signal quality or high electromagnetic interference.

Q: Are all substitute parts pin-compatible with the TRSF3232CD?

A: Yes. All listed substitute parts use the 16-SOIC package with identical pinout and electrical interface. Direct PCB replacement is possible without layout modifications.

Q: What is the significance of MSL (Moisture Sensitivity Level) ratings?

A: MSL indicates the maximum time a component can be exposed to ambient conditions (typically 30°C, 85% relative humidity) before soldering. TRSF3232CD has MSL 1 (unlimited exposure). Substitute parts with MSL 2 (1 Year) or MSL 3 (168 Hours) require controlled storage and handling. Ensure your manufacturing environment and supply chain practices accommodate the MSL requirement of your selected substitute.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in three packaging formats: Tube (standard reel packaging for manual handling), Cut Tape & Digi-Reel (for automated pick-and-place equipment), and Tape & Reel (for high-volume automated assembly). Select packaging based on your production volume and assembly equipment capabilities.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, ensuring compatibility with environmental and regulatory requirements equivalent to the original TRSF3232CD.