SP3232EUCT-L/TR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SP3232EUCT-L/TR is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 16-SOIC package. This interface IC operates across a 3V to 5.5V supply range with a 1Mbps data rate and 300mV receiver hysteresis. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring RS232 interface functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	SP3232EUCT-L/TR
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	1 Mbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the SP3232EUCT-L/TR is determined by the following critical parameters:

Protocol Compatibility: RS232 transceiver functionality
Channel Configuration: 2 drivers and 2 receivers (2/2)
Duplex Mode: Full-duplex operation
Package Type: 16-SOIC form factor with 0.295" (7.50mm) width
Electrical Specifications: Supply voltage range (3V ~ 5.5V minimum), receiver hysteresis, and data rate capability
Operating Temperature Range: Minimum 0°C ~ 70°C support
Surface Mount Compatibility: All substitutes maintain surface mount technology

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

MFR Recommended Substitutes maintain MaxLinear or equivalent manufacturer lineage with active product status and improved specifications.

Direct Manufacturer Substitutes from Texas Instruments provide identical electrical and mechanical compatibility in the same package, though classified as Last Time Buy.

Upgrade Substitutes offer extended operating temperature ranges (-40°C ~ 85°C) and enhanced compliance certifications while maintaining core RS232 2/2 transceiver functionality.

Alternative Manufacturer Substitutes from Analog Devices provide active product status with full RS232 2/2 transceiver capability in the same 16-SOIC package, though with different receiver hysteresis and data rate specifications.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Package	Supply Voltage	Operating Temp	Data Rate	Receiver Hysteresis	Product Status	RoHS Status
SP3232EUCT-L/TR	MaxLinear, Inc.	RS232	2/2	16-SOIC	3V ~ 5.5V	0°C ~ 70°C	1 Mbps	300 mV	Obsolete	-
SP3232EUCY-L/TR	MaxLinear, Inc.	RS232	2/2	16-TSSOP	3V ~ 5.5V	0°C ~ 70°C	1 Mbps	300 mV	Active	RoHS Compliant
SN75C3232DW	Texas Instruments	RS232	2/2	16-SOIC	3V ~ 5.5V	0°C ~ 70°C	1 Mbps	300 mV	Last Time Buy	ROHS3 Compliant
SN75C3232EDW	Texas Instruments	RS232	2/2	16-SOIC	3V ~ 5.5V	0°C ~ 70°C	1 Mbps	300 mV	Last Time Buy	ROHS3 Compliant
SN65C3232DW	Texas Instruments	RS232	2/2	16-SOIC	3V ~ 5.5V	-40°C ~ 85°C	1 Mbps	300 mV	Last Time Buy	ROHS3 Compliant
SN65C3232EDW	Texas Instruments	RS232	2/2	16-SOIC	3V ~ 5.5V	-40°C ~ 85°C	1 Mbps	300 mV	Last Time Buy	ROHS3 Compliant
TRSF3232EIDW	Texas Instruments	RS232	2/2	16-SOIC	3V ~ 5.5V	-40°C ~ 85°C	1 Mbps	300 mV	Last Time Buy	ROHS3 Compliant
TRSF3232EIDWR	Texas Instruments	RS232	2/2	16-SOIC	3V ~ 5.5V	-40°C ~ 85°C	1 Mbps	300 mV	Last Time Buy	ROHS3 Compliant
ADM202EARWZ	Analog Devices Inc.	RS232	2/2	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	230 kbps	650 mV	Active	ROHS3 Compliant
ADM202EARWZ-REEL	Analog Devices Inc.	RS232	2/2	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	230 kbps	650 mV	Active	ROHS3 Compliant
ADM202JRWZ	Analog Devices Inc.	RS232	2/2	16-SOIC	4.5V ~ 5.5V	0°C ~ 70°C	-	400 mV	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Same Package, Same Temperature Range):

SN75C3232DW and SN75C3232EDW from Texas Instruments provide identical electrical and mechanical compatibility with the SP3232EUCT-L/TR. Both maintain the 16-SOIC package, 3V ~ 5.5V supply range, 0°C ~ 70°C operating temperature, and 1Mbps data rate. These parts are classified as Last Time Buy with ROHS3 compliance and unlimited moisture sensitivity rating, making them suitable for designs requiring exact parameter matching.

For Extended Temperature Range Applications:

SN65C3232DW, SN65C3232EDW, TRSF3232EIDW, and TRSF3232EIDWR extend the operating temperature range to -40°C ~ 85°C while maintaining all other electrical specifications. These upgrades are appropriate for industrial and automotive applications requiring broader temperature support. All four parts carry ROHS3 compliance and Last Time Buy status.

For Active Product Status with Full Compliance:

SP3232EUCY-L/TR from MaxLinear, Inc. maintains active product status with RoHS compliance. This part preserves the original electrical specifications (3V ~ 5.5V, 0°C ~ 70°C, 1Mbps, 300mV hysteresis) but uses a 16-TSSOP package instead of 16-SOIC. Selection requires PCB layout modification to accommodate the different package footprint.

For Alternative Manufacturer Solutions:

ADM202EARWZ and ADM202EARWZ-REEL from Analog Devices provide active product status with extended temperature range (-40°C ~ 85°C) and ROHS3 compliance. These parts operate within a narrower supply voltage range (4.5V ~ 5.5V) and feature reduced data rate (230kbps) and increased receiver hysteresis (650mV). Selection is appropriate when supply voltage remains above 4.5V and lower data rates are acceptable.

ADM202JRWZ offers active status with the original temperature range (0°C ~ 70°C) and 4.5V ~ 5.5V supply range, with 400mV receiver hysteresis. This variant is suitable for applications matching the original temperature specifications while requiring active product availability.

Frequently Asked Questions (FAQ)

Q: Can SP3232EUCY-L/TR replace SP3232EUCT-L/TR directly on the PCB?

A: No. While both parts maintain identical electrical specifications (RS232 2/2 transceiver, 3V ~ 5.5V, 0°C ~ 70°C, 1Mbps, 300mV hysteresis), the package differs. SP3232EUCY-L/TR uses 16-TSSOP while the original uses 16-SOIC. PCB layout modification is required.

Q: What is the difference between SN75C3232DW and SN65C3232DW?

A: Both are Texas Instruments RS232 2/2 transceivers in 16-SOIC packages with identical electrical specifications except operating temperature. SN75C3232DW operates 0°C ~ 70°C, while SN65C3232DW extends to -40°C ~ 85°C. The SN65 variant is suitable for wider temperature applications.

Q: Are ADM202 parts fully compatible with SP3232EUCT-L/TR?

A: ADM202 parts maintain RS232 2/2 transceiver functionality in the same 16-SOIC package but differ in three parameters: supply voltage range (4.5V ~ 5.5V vs. 3V ~ 5.5V), data rate (230kbps vs. 1Mbps), and receiver hysteresis (650mV vs. 300mV). Selection requires verification that your application operates above 4.5V supply and tolerates lower data rates and higher hysteresis.

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

A: SP3232EUCY-L/TR, ADM202EARWZ, ADM202EARWZ-REEL, and ADM202JRWZ all carry active product status. All other substitutes are classified as Last Time Buy. For new designs requiring long-term component availability, active status parts are preferred.

Q: Can I use TRSF3232EIDWR in place of TRSF3232EIDW?

A: Yes. Both parts are identical in electrical specifications and package (16-SOIC, RS232 2/2, 3V ~ 5.5V, -40°C ~ 85°C, 1Mbps, 300mV hysteresis). The difference is packaging format: TRSF3232EIDW uses Tube while TRSF3232EIDWR uses Cut Tape & Digi-Reel. Selection depends on your procurement and assembly requirements.

Q: What does MSL rating mean for component substitution?

A: Moisture Sensitivity Level (MSL) indicates how long a component can be exposed to moisture before soldering. SP3232EUCT-L/TR has MSL 3 (168 hours), while most substitutes have MSL 1 (unlimited). Lower MSL values provide greater handling flexibility and reduced risk of moisture-related failures during assembly.

Q: Is RoHS compliance required for my application?

A: RoHS compliance is a regulatory requirement in many markets. SP3232EUCT-L/TR does not specify RoHS status. All listed substitutes carry either RoHS Compliant or ROHS3 Compliant certification, ensuring compliance with current environmental regulations.

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