MAX3232CUE RS232 Transceiver Interface IC - Equivalent & Substitute Parts

Part Overview

The MAX3232CUE is a full-duplex RS232 transceiver interface IC manufactured by Analog Devices Inc./Maxim Integrated, configured with 2 drivers and 2 receivers in a 16-TSSOP surface mount package. This component is classified as obsolete, with 3300 units currently in stock. Due to its obsolete product status, identifying equivalent and substitute parts is necessary for ongoing system support, design updates, and long-term supply chain continuity. Substitute parts must maintain functional compatibility while meeting current manufacturing standards and compliance requirements.

Key Parameters

Parameter	MAX3232CUE
Manufacturer	Analog Devices Inc./Maxim Integrated
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	235 Kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the MAX3232CUE is determined by the following critical parameters: RS232 protocol compliance, 2/2 driver/receiver configuration, full-duplex operation, 16-TSSOP package compatibility, and surface mount mounting type. Substitute parts must maintain these core functional specifications to ensure direct replacement capability.

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts with identical electrical specifications (2/2 configuration, 235 Kbps data rate, 300 mV receiver hysteresis, 3V ~ 5.5V supply voltage) but with active product status and improved compliance certifications.

Manufacturer Recommended Alternatives: Parts with compatible 2/2 configuration and 16-TSSOP packaging but with variations in receiver hysteresis, data rate, operating temperature range, and supply voltage specifications. These alternatives provide enhanced performance characteristics and extended operating conditions.

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Receiver Hysteresis	Supply Voltage	Operating Temperature	Package	Product Status	RoHS Status
MAX3232CUE	Analog Devices Inc./Maxim Integrated	2/2	235 Kbps	300 mV	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	Obsolete	RoHS non-compliant
MAX3221CUE+	Analog Devices Inc./Maxim Integrated	1/1	235 Kbps	300 mV	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	Active	ROHS3 Compliant
MAX3232CUE+	Analog Devices Inc./Maxim Integrated	2/2	235 Kbps	300 mV	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	Active	ROHS3 Compliant
ADM202EARUZ	Analog Devices Inc.	2/2	230 Kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	ROHS3 Compliant
ADM202EARUZ-REEL	Analog Devices Inc.	2/2	230 Kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	ROHS3 Compliant
ADM202EARUZ-REEL7	Analog Devices Inc.	2/2	230 Kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	ROHS3 Compliant
ADM3202ARUZ	Analog Devices Inc.	2/2	460 Kbps	400 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	ROHS3 Compliant
ADM3202ARUZ-REEL	Analog Devices Inc.	2/2	460 Kbps	400 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	ROHS3 Compliant
ADM3202ARUZ-REEL7	Analog Devices Inc.	2/2	460 Kbps	400 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	ROHS3 Compliant
ADM3232EARUZ	Analog Devices Inc.	2/2	460 Kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	ROHS3 Compliant
ADM3232EARUZ-REEL7	Analog Devices Inc.	2/2	460 Kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Specifications):

MAX3232CUE+ is the direct active-status equivalent of MAX3232CUE. Both parts maintain identical 2/2 driver/receiver configuration, 235 Kbps data rate, 300 mV receiver hysteresis, and 3V ~ 5.5V supply voltage range. MAX3232CUE+ achieves ROHS3 compliance and active product status, eliminating obsolescence concerns while preserving all electrical characteristics. This part is available in Tube packaging with 3480 units in stock.

Alternative with Enhanced Performance (Extended Temperature Range):

ADM3202ARUZ, ADM3202ARUZ-REEL, and ADM3202ARUZ-REEL7 provide 2/2 driver/receiver configuration with doubled data rate (460 Kbps versus 235 Kbps) and extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C). Supply voltage compatibility remains within 3V ~ 5.5V. These parts are ROHS3 compliant and active. Selection of ADM3202 variants is appropriate for applications requiring higher data throughput and wider temperature operation.

Alternative with Enhanced Performance and Hysteresis (Extended Temperature Range):

ADM3232EARUZ and ADM3232EARUZ-REEL7 provide 2/2 driver/receiver configuration with 460 Kbps data rate, 500 mV receiver hysteresis, and extended operating temperature range (-40°C ~ 85°C). Supply voltage compatibility remains within 3V ~ 5.5V. These parts are ROHS3 compliant and active. Selection of ADM3232 variants is appropriate for applications requiring higher data throughput, wider temperature operation, and increased receiver hysteresis margin.

Alternative with Restricted Supply Voltage (Extended Temperature Range):

ADM202EARUZ, ADM202EARUZ-REEL, and ADM202EARUZ-REEL7 provide 2/2 driver/receiver configuration with 230 Kbps data rate and extended operating temperature range (-40°C ~ 85°C). Supply voltage is restricted to 4.5V ~ 5.5V (narrower than MAX3232CUE). Receiver hysteresis is 650 mV. These parts are ROHS3 compliant and active. Selection of ADM202 variants requires confirmation that system supply voltage operates within the 4.5V ~ 5.5V range.

Limited Substitution (Reduced Driver/Receiver Count):

MAX3221CUE+ provides only 1/1 driver/receiver configuration compared to the 2/2 requirement of MAX3232CUE. This part is suitable only for applications where single channel operation is acceptable. All other electrical parameters match MAX3232CUE (235 Kbps, 300 mV hysteresis, 3V ~ 5.5V supply). This part is ROHS3 compliant and active.

Frequently Asked Questions (FAQ)

Q: Can MAX3232CUE+ directly replace MAX3232CUE without circuit modification?

A: Yes. MAX3232CUE+ maintains identical electrical specifications (2/2 configuration, 235 Kbps data rate, 300 mV receiver hysteresis, 3V ~ 5.5V supply voltage) and 16-TSSOP package. Both parts are pin-compatible and functionally equivalent. The primary difference is product status (Active versus Obsolete) and RoHS compliance (ROHS3 Compliant versus RoHS non-compliant).

Q: What is the difference between ADM3202ARUZ and ADM3232EARUZ?

A: Both parts provide 2/2 driver/receiver configuration, 460 Kbps data rate, 3V ~ 5.5V supply voltage, and -40°C ~ 85°C operating temperature. The difference is receiver hysteresis: ADM3202ARUZ has 400 mV hysteresis while ADM3232EARUZ has 500 mV hysteresis. Higher hysteresis provides greater noise immunity in noisy environments.

Q: Can ADM202EARUZ replace MAX3232CUE in all applications?

A: ADM202EARUZ maintains 2/2 driver/receiver configuration and 16-TSSOP package but has restricted supply voltage (4.5V ~ 5.5V versus 3V ~ 5.5V). Substitution is valid only if the system supply voltage operates within 4.5V ~ 5.5V. Data rate is slightly lower (230 Kbps versus 235 Kbps) and receiver hysteresis is higher (650 mV versus 300 mV).

Q: What packaging options are available for substitute parts?

A: MAX3232CUE+ is available in Tube packaging. ADM202EARUZ variants are available in Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel® packaging. ADM3202ARUZ variants are available in Tube and Cut Tape (CT) & Digi-Reel® packaging. ADM3232EARUZ variants are available in Tube and Cut Tape (CT) & Digi-Reel® packaging. Packaging selection depends on assembly process requirements and order quantities.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 Compliant. The original MAX3232CUE is RoHS non-compliant. Substitution with any listed alternative part improves regulatory compliance status.

Q: What is the inventory status of substitute parts?

A: MAX3232CUE+ has 3480 units in stock. ADM202EARUZ variants have between 1922 and 2311 units in stock. ADM3202ARUZ variants have between 20200 and 25400 units in stock. ADM3232EARUZ variants have between 1340 and 30400 units in stock. All substitute parts are classified as New Original In Stock.

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