SP3232EBCT-L/TR Equivalent & Substitute Parts

Part Overview

The SP3232EBCT-L/TR is a 2/2 full-duplex RS232 transceiver IC manufactured by MaxLinear, Inc., housed in a 16-SOIC package. This component interfaces between RS232 serial communication lines and TTL/CMOS logic levels, supporting data rates up to 250 kbps with a supply voltage range of 3V to 5.5V and operating temperature range of 0°C to 70°C.

The SP3232EBCT-L/TR is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance and new production builds.

Key Parameters

Parameter	SP3232EBCT-L/TR
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	250 kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the SP3232EBCT-L/TR is determined by the following critical parameters:

Core Functional Requirements:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Package / Case: 16-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount

Electrical Compatibility Parameters:

Voltage - Supply: 3V ~ 5.5V (minimum requirement)
Data Rate: 250 kbps (minimum requirement)
Receiver Hysteresis: 300 mV (acceptable tolerance range)

Environmental Parameters:

Operating Temperature: 0°C ~ 70°C (minimum requirement; extended range acceptable)

Substitute parts must maintain identical package geometry, pin configuration, and RS232 protocol compliance. Electrical parameters may exceed the original specifications (higher data rates, extended temperature ranges, improved hysteresis characteristics) without compromising compatibility. Parts with reduced supply voltage ranges, lower data rates, or different package types are not suitable substitutes.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Package	Data Rate	Supply Voltage	Operating Temp	Hysteresis	Product Status	RoHS Status
SP3232EBCT-L/TR	MaxLinear, Inc.	RS232	2/2	16-SOIC	250 kbps	3V ~ 5.5V	0°C ~ 70°C	300 mV	Obsolete	Not Specified
SP3232EBCA-L/TR	MaxLinear, Inc.	RS232	2/2	16-SSOP	250 kbps	3V ~ 5.5V	0°C ~ 70°C	300 mV	Active	RoHS Compliant
MAX3232ECWE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	1 Mbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	Active	ROHS3 Compliant
MAX3232ECWE+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	1 Mbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	Active	ROHS3 Compliant
MAX3232EEWE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	Active	ROHS3 Compliant
MAX3232EEWE+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	Active	ROHS3 Compliant
MAX3232EIDWR	Texas Instruments	RS232	2/2	16-SOIC	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	300 mV	Active	ROHS3 Compliant
MAX3232IDW	Texas Instruments	RS232	2/2	16-SOIC	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	300 mV	Last Time Buy	ROHS3 Compliant
MAX3232IDWR	Texas Instruments	RS232	2/2	16-SOIC	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	300 mV	Active	ROHS3 Compliant
TRS3232EIDW	Texas Instruments	RS232	2/2	16-SOIC	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	300 mV	Last Time Buy	ROHS3 Compliant
ADM202EARWZ	Analog Devices Inc.	RS232	2/2	16-SOIC	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Package-Compatible Substitutes (16-SOIC):

The MAX3232ECWE+ and MAX3232ECWE+T from Analog Devices Inc./Maxim Integrated provide direct pin-compatible substitution with enhanced performance characteristics. Both parts maintain the 16-SOIC package geometry, 3V to 5.5V supply voltage range, and 0°C to 70°C operating temperature compatibility. These parts feature 1 Mbps data rate capability, exceeding the original 250 kbps specification, and are ROHS3 compliant with MSL 1 rating.

Extended Temperature Range Alternatives:

The MAX3232EEWE+, MAX3232EEWE+T, MAX3232EIDWR, MAX3232IDW, MAX3232IDWR, and TRS3232EIDW all provide extended operating temperature ranges (-40°C to 85°C) while maintaining the 16-SOIC package and 3V to 5.5V supply voltage. These parts are suitable for applications requiring broader environmental specifications. All are ROHS3 compliant with MSL 1 rating and active or last-time-buy product status.

Package Variant:

The SP3232EBCA-L/TR from MaxLinear, Inc. maintains functional equivalence but uses a 16-SSOP package instead of 16-SOIC. This part is suitable only if PCB layout accommodates the smaller SSOP footprint. It is active status and RoHS compliant.

Limited Compatibility:

The ADM202EARWZ from Analog Devices Inc. has a restricted supply voltage range (4.5V to 5.5V) and lower data rate (230 kbps), making it unsuitable as a direct substitute for applications requiring the full 3V to 5.5V supply range or 250 kbps operation.

Frequently Asked Questions (FAQ)

Q: Can MAX3232ECWE+ directly replace SP3232EBCT-L/TR?

A: Yes. Both parts use the 16-SOIC package with identical pin configuration, support RS232 protocol with 2/2 driver/receiver configuration, and operate within the 3V to 5.5V supply voltage range. The MAX3232ECWE+ exceeds the original data rate specification (1 Mbps vs. 250 kbps) and is fully compatible.

Q: What is the difference between MAX3232ECWE+ and MAX3232ECWE+T?

A: Both parts are electrically identical. The primary difference is packaging format: MAX3232ECWE+ is supplied in Tube packaging, while MAX3232ECWE+T is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly process requirements.

Q: Why is ADM202EARWZ not recommended as a substitute?

A: The ADM202EARWZ has a restricted supply voltage range (4.5V to 5.5V minimum) compared to the SP3232EBCT-L/TR (3V to 5.5V). Applications requiring operation at 3V or 3.3V supply voltage cannot use this part. Additionally, its data rate (230 kbps) is below the original specification.

Q: Can SP3232EBCA-L/TR be used instead of SP3232EBCT-L/TR?

A: SP3232EBCA-L/TR is functionally equivalent but uses a 16-SSOP package instead of 16-SOIC. Substitution is possible only if the PCB layout is redesigned to accommodate the smaller SSOP footprint. Pin configuration and electrical characteristics are compatible.

Q: What does "Last Time Buy" product status mean?

A: Parts designated as "Last Time Buy" (MAX3232IDW, TRS3232EIDW) indicate the manufacturer will no longer produce these components after a specified date. These parts remain available from existing inventory but should not be selected for new designs. Active status parts (MAX3232EIDWR, MAX3232IDWR) are preferred for ongoing production.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant except SP3232EBCT-L/TR (original part status not specified). SP3232EBCA-L/TR is RoHS Compliant. This ensures compliance with environmental regulations for new production builds.

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

A: MSL ratings indicate component sensitivity to moisture absorption during storage. The original SP3232EBCT-L/TR has MSL 3 (168 hours), requiring controlled storage conditions. Most substitute parts have MSL 1 (Unlimited), providing superior moisture tolerance and simplified handling requirements.

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