TRSF3232ECD RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRSF3232ECD 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 and 300mV receiver hysteresis, designed for serial communication interface applications requiring full RS232 protocol compliance.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRSF3232ECD
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Data Rate	1Mbps
Receiver Hysteresis	300 mV
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the TRSF3232ECD is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Protocol: RS232
Configuration: 2/2 Drivers/Receivers, Full Duplex
Package: 16-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Supply Voltage Range: 3V ~ 5.5V
Receiver Hysteresis: 300 mV (primary specification)
Data Rate: 1Mbps (primary specification)

Secondary Compatibility Factors:

Operating Temperature Range (0°C ~ 70°C baseline)
RoHS Compliance Status
Moisture Sensitivity Level (MSL)

Parts are grouped into two categories based on exact parameter matching:

Group 1 - Direct Equivalents (Identical Specifications): Parts matching all primary criteria including 1Mbps data rate and 300mV receiver hysteresis.

Group 2 - Functional Equivalents (Reduced Data Rate): Parts with 250kbps data rate instead of 1Mbps, maintaining all other electrical and mechanical specifications. These parts are functionally compatible for applications not requiring the full 1Mbps bandwidth.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Operating Temperature	Packaging	Product Status	RoHS Status	MSL
TRSF3232ECD	Texas Instruments	1Mbps	300 mV	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3 Compliant	1 (Unlimited)
SP3232EUCN-L/TR	MaxLinear, Inc.	1Mbps	300 mV	0°C ~ 70°C	16-SOIC (Tape & Reel)	Active	RoHS Compliant	2 (1 Year)
ICL3232CBNZ	Renesas Electronics	250kbps	300 mV	0°C ~ 70°C	16-SOIC (Tube)	Active	ROHS3 Compliant	3 (168 Hours)
ICL3232CBNZ-T	Renesas Electronics	250kbps	300 mV	0°C ~ 70°C	16-SOIC (Cut Tape & Digi-Reel)	Active	ROHS3 Compliant	3 (168 Hours)
ICL3232ECBNZ	Renesas Electronics	250kbps	500 mV	0°C ~ 70°C	16-SOIC (Tube)	Active	ROHS3 Compliant	3 (168 Hours)
ICL3232ECBNZ-T	Renesas Electronics	250kbps	500 mV	0°C ~ 70°C	16-SOIC (Cut Tape & Digi-Reel)	Active	ROHS3 Compliant	3 (168 Hours)
ICL3232EIBNZ	Renesas Electronics	250kbps	500 mV	-40°C ~ 85°C	16-SOIC (Tube)	Active	ROHS3 Compliant	3 (168 Hours)
ICL3232EIBNZ-T	Renesas Electronics	250kbps	500 mV	-40°C ~ 85°C	16-SOIC (Cut Tape & Digi-Reel)	Active	ROHS3 Compliant	3 (168 Hours)
ICL3232IBNZ	Renesas Electronics	250kbps	300 mV	-40°C ~ 85°C	16-SOIC (Tube)	Active	ROHS3 Compliant	3 (168 Hours)
ICL3232IBNZ-T	Renesas Electronics	250kbps	300 mV	-40°C ~ 85°C	16-SOIC (Cut Tape & Digi-Reel)	Active	ROHS3 Compliant	3 (168 Hours)
MAX3232CSE+	Analog Devices Inc./Maxim Integrated	235Kbps	300 mV	0°C ~ 70°C	16-SOIC (Tube)	Active	ROHS3 Compliant	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (1Mbps Data Rate Requirement):

SP3232EUCN-L/TR from MaxLinear, Inc. is the primary direct equivalent. This part maintains identical electrical specifications (1Mbps data rate, 300mV receiver hysteresis) and mechanical compatibility (16-SOIC package). The part is in active production status with RoHS compliance and standard MSL rating. Tape & Reel packaging is suitable for automated assembly processes.

For Functional Substitution (Reduced Data Rate Acceptable):

Renesas Electronics ICL3232 series parts provide functional equivalence with reduced data rate (250kbps). Multiple variants are available:

ICL3232CBNZ / ICL3232CBNZ-T: 300mV hysteresis, 0°C ~ 70°C operating range, matching the original temperature specification
ICL3232IBNZ / ICL3232IBNZ-T: 300mV hysteresis, extended -40°C ~ 85°C operating range for industrial applications
ICL3232ECBNZ / ICL3232ECBNZ-T: 500mV hysteresis, 0°C ~ 70°C operating range
ICL3232EIBNZ / ICL3232EIBNZ-T: 500mV hysteresis, extended -40°C ~ 85°C operating range

All Renesas variants are ROHS3 compliant and in active production. Packaging options include Tube and Cut Tape & Digi-Reel formats.

Alternative Option:

MAX3232CSE+ from Analog Devices Inc./Maxim Integrated provides 235Kbps data rate with 300mV receiver hysteresis and 0°C ~ 70°C operating range. This part maintains MSL 1 rating (unlimited moisture sensitivity) matching the original specification.

Compliance Considerations:

All substitute parts listed maintain ROHS3 compliance status. The original TRSF3232ECD carries MSL 1 (unlimited) rating; substitute parts carry MSL 2 or MSL 3 ratings, requiring appropriate moisture control during storage and handling per IPC-A-610 standards.

Frequently Asked Questions (FAQ)

Q: Can ICL3232 parts with 250kbps data rate replace the TRSF3232ECD in a 1Mbps application?

A: ICL3232 parts operate at 250kbps maximum data rate, which is lower than the TRSF3232ECD specification of 1Mbps. These parts are functionally compatible only for applications where the communication protocol does not require the full 1Mbps bandwidth. System-level testing is required to confirm compatibility with existing firmware and communication protocols.

Q: What is the difference between ICL3232CBNZ and ICL3232IBNZ?

A: Both parts share identical electrical specifications (250kbps data rate, 300mV receiver hysteresis, 16-SOIC package). The primary difference is operating temperature range: ICL3232CBNZ operates 0°C ~ 70°C (commercial grade), while ICL3232IBNZ operates -40°C ~ 85°C (industrial grade). Select based on your application's temperature requirements.

Q: What is the significance of receiver hysteresis values?

A: Receiver hysteresis determines the voltage differential required for the receiver to switch logic states. The TRSF3232ECD specifies 300mV hysteresis. ICL3232ECBNZ and ICL3232EIBNZ variants feature 500mV hysteresis, providing greater noise immunity but potentially slower response to marginal signal transitions. For noise-sensitive applications, 300mV hysteresis variants (ICL3232CBNZ, ICL3232IBNZ, MAX3232CSE+) are preferred.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Tube (standard for manual assembly), Tape & Reel (TR) for automated pick-and-place assembly, and Cut Tape & Digi-Reel for mixed-volume production. Select packaging based on your manufacturing process and volume requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed substitute parts are RoHS compliant. The original TRSF3232ECD is ROHS3 compliant, and all substitutes maintain ROHS3 or equivalent RoHS compliance status.

Q: What is the MSL (Moisture Sensitivity Level) difference, and does it matter?

A: The TRSF3232ECD carries MSL 1 (unlimited shelf life without moisture control). Most substitute parts carry MSL 2 or MSL 3, requiring moisture control during storage. MSL 2 parts require dry storage for up to 1 year; MSL 3 parts require dry storage for up to 168 hours before soldering. Implement appropriate moisture control procedures per IPC-A-610 standards when using MSL 2 or MSL 3 parts.

Q: Is SP3232EUCN-L/TR a true 1:1 replacement?

A: SP3232EUCN-L/TR from MaxLinear maintains all electrical specifications of the TRSF3232ECD (1Mbps data rate, 300mV receiver hysteresis, 3V ~ 5.5V supply, 16-SOIC package). The part is in active production status. The primary difference is packaging format (Tape & Reel vs. standard packaging) and MSL rating (MSL 2 vs. MSL 1). This part is suitable for direct replacement in new designs and production runs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message