TRS3232CDW RS232 Interface Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3232CDW 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 250kbps data rate and 300mV receiver hysteresis, suitable for legacy RS232 communication applications requiring low-voltage operation.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3232CDW
Manufacturer	Texas Instruments
Category	Interface
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	250kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the TRS3232CDW is determined by strict equivalence across the following critical parameters:

Core Electrical Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Voltage Supply Range: 3V ~ 5.5V
Package / Case: 16-SOIC (0.295", 7.50mm Width)

Acceptable Variation Parameters:

Receiver Hysteresis: 300mV or 500mV (both acceptable for RS232 operation)
Data Rate: 235kbps, 250kbps, or 1Mbps (all support minimum 250kbps requirement)
Operating Temperature: 0°C ~ 70°C or -40°C ~ 85°C (extended range acceptable)
Packaging Format: Tube, Tape & Reel (TR), or Cut Tape (CT) & Digi-Reel® (format selection based on procurement requirements)
Product Status: Active or Last Time Buy (preferred over Obsolete)

Substitutes are grouped into three categories: Direct Manufacturer Equivalents (same base part number, different packaging), Parametric Equivalents (different manufacturer part number, identical electrical specifications), and Upgrades (enhanced specifications with backward compatibility).

Parameter Comparison

Part Number	Manufacturer	Product Status	Receiver Hysteresis	Data Rate	Operating Temperature	Packaging	MSL
TRS3232CDW	Texas Instruments	Obsolete	300 mV	250kbps	0°C ~ 70°C	Tube	1
TRS3232ECDWR	Texas Instruments	Active	300 mV	250kbps	0°C ~ 70°C	Tape & Reel (TR)	1
MAX3232CDW	Texas Instruments	Last Time Buy	300 mV	250kbps	0°C ~ 70°C	Tube	1
MAX3232ECDW	Texas Instruments	Last Time Buy	300 mV	250kbps	0°C ~ 70°C	Tube	1
MAX3232EEWE+	Analog Devices Inc./Maxim Integrated	Active	500 mV	250kbps	-40°C ~ 85°C	Tube	1
MAX3232EEWE+T	Analog Devices Inc./Maxim Integrated	Active	500 mV	250kbps	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	1
ICL3232ECBZ	Renesas Electronics Corporation	Active	500 mV	250kbps	0°C ~ 70°C	Tube	3
ICL3232ECBZ-T	Renesas Electronics Corporation	Active	500 mV	250kbps	0°C ~ 70°C	Tape & Reel (TR)	3
MAX3232CWE+	Analog Devices Inc./Maxim Integrated	Active	300 mV	235Kbps	0°C ~ 70°C	Tube	1
MAX3232CWE+T	Analog Devices Inc./Maxim Integrated	Active	300 mV	235Kbps	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	1
MAX3232ECWE+	Analog Devices Inc./Maxim Integrated	Active	500 mV	1Mbps	0°C ~ 70°C	Tube	1

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): TRS3232ECDWR is the primary direct substitute, offering identical electrical specifications with Active product status and Tape & Reel packaging for automated assembly. This part maintains the same base part number lineage and MSL rating.

Texas Instruments Alternatives: MAX3232CDW and MAX3232ECDW provide parametric equivalence with identical electrical performance. Both are Last Time Buy status, indicating limited future availability. These parts are suitable for applications where Texas Instruments sourcing is required.

Active Production Alternatives: MAX3232EEWE+ and MAX3232EEWE+T (Analog Devices Inc./Maxim Integrated) offer extended operating temperature range (-40°C ~ 85°C) with Active product status, providing long-term supply security. The increased receiver hysteresis (500mV) and extended temperature range represent performance enhancements suitable for demanding environments.

Extended Temperature Range: For applications requiring operation beyond 0°C ~ 70°C, MAX3232EEWE+ and MAX3232EEWE+T support -40°C ~ 85°C operation while maintaining all other electrical parameters.

Higher Data Rate Option: MAX3232ECWE+ supports 1Mbps data rate with 500mV receiver hysteresis, suitable for applications requiring enhanced signal integrity at higher speeds while maintaining backward compatibility with 250kbps operation.

Renesas Electronics Alternative: ICL3232ECBZ and ICL3232ECBZ-T (Renesas Electronics Corporation) provide Active product status with 500mV receiver hysteresis. Note the MSL rating of 3 (168 Hours) versus MSL 1 for other alternatives; this requires appropriate moisture control during storage and handling.

Compliance & Certifications: All listed substitutes maintain ROHS3 compliance and REACH Unaffected status, matching the original part's regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX3232EEWE+ replace TRS3232CDW directly? A: Yes. Both devices are 2/2 full-duplex RS232 transceivers in 16-SOIC packages with 3V ~ 5.5V supply operation. The MAX3232EEWE+ offers extended temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) and higher receiver hysteresis (500mV versus 300mV), both acceptable enhancements. Electrical compatibility is confirmed across all critical parameters.

Q: What is the difference between Tube and Tape & Reel packaging? A: Tube packaging is suitable for manual assembly and small-volume applications. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging are designed for automated pick-and-place assembly. Selection depends on manufacturing process requirements. Electrical performance is identical across all packaging formats.

Q: Why does ICL3232ECBZ have MSL 3 while others have MSL 1? A: MSL (Moisture Sensitivity Level) indicates moisture absorption characteristics. MSL 3 requires storage at ≤30% relative humidity and limits floor life to 168 hours after opening. MSL 1 (Unlimited) has no moisture-related restrictions. For applications with standard moisture control, both are acceptable. High-volume or extended storage applications may prefer MSL 1 parts.

Q: Is 235Kbps data rate sufficient if the original part specifies 250kbps? A: MAX3232CWE+ and MAX3232CWE+T specify 235Kbps, which is marginally below the 250kbps specification. For applications operating at or near 250kbps, this represents a minor reduction in margin. For applications operating below 235Kbps, these parts are fully compatible. Verify actual application data rates before selection.

Q: Can I use MAX3232ECWE+ for 1Mbps applications? A: MAX3232ECWE+ supports 1Mbps data rate, making it suitable for high-speed RS232 applications. It maintains full backward compatibility with lower data rates (250kbps and below). The 500mV receiver hysteresis provides enhanced noise immunity at higher speeds.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the original TRS3232CDW regulatory requirements.

Q: What is the inventory status for these substitutes? A: Inventory levels vary by part number and supplier. TRS3232ECDWR (2419 pcs), MAX3232ECDW (3200 pcs), MAX3232CWE+T (5384 pcs), and MAX3232EEWE+T (2608 pcs) show substantial availability. Verify current inventory with your component supplier before finalizing procurement decisions.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message