MAX3232EEPE RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX3232EEPE is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-pin DIP package. This interface IC operates across a 3V to 5.5V supply range and supports data rates up to 250 kbps with a receiver hysteresis of 500 mV. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. Substitute parts must maintain compatibility across electrical specifications, mechanical packaging, and functional performance parameters.

Key Parameters

Parameter	MAX3232EEPE
Manufacturer	Analog Devices Inc./Maxim Integrated
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	250 kbps
Voltage Supply Range	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Receiver Hysteresis	500 mV
Package / Case	16-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MAX3232EEPE is determined by the following critical parameters:

Protocol: RS232 (mandatory match)
Number of Drivers/Receivers: 2/2 (mandatory match)
Duplex: Full (mandatory match)
Package / Case: 16-DIP (0.300", 7.62mm) (mandatory match)
Mounting Type: Through Hole (mandatory match)
Voltage Supply Range: Must encompass or be compatible with 3V ~ 5.5V
Operating Temperature: Must support -40°C ~ 85°C or be suitable for the application's temperature requirements
Data Rate: Must support minimum 250 kbps
Receiver Hysteresis: Acceptable range 300 mV to 650 mV

Substitute parts are categorized as follows:

Parametric Equivalent: MAX3232EEPE+ maintains identical electrical specifications and is the direct active replacement.

Manufacturer Recommended Substitutes: ADM1181AANZ, ADM202EANZ, ADM232AANZ, ADM232LANZ, ADM3202ANZ, ICL3232CPZ, LT1081CN#PBF, LT1081IN#PBF, and LT1781IN#PBF meet all mandatory parameters with variations in data rate, receiver hysteresis, and operating temperature ranges.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Voltage Supply	Operating Temp	Receiver Hysteresis	Package	Product Status	RoHS Status
MAX3232EEPE	Analog Devices/Maxim	RS232	2/2	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	16-DIP	Obsolete	Non-compliant
MAX3232EEPE+	Analog Devices/Maxim	RS232	2/2	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	16-DIP	Active	ROHS3 Compliant
ADM1181AANZ	Analog Devices	RS232	2/2	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	16-DIP	Active	ROHS3 Compliant
ADM202EANZ	Analog Devices	RS232	2/2	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	16-DIP	Active	ROHS3 Compliant
ADM232AANZ	Analog Devices	RS232	2/2	200 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	400 mV	16-DIP	Active	ROHS3 Compliant
ADM232LANZ	Analog Devices	RS232	2/2	120 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	16-DIP	Active	ROHS3 Compliant
ADM3202ANZ	Analog Devices	RS232	2/2	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	400 mV	16-DIP	Active	ROHS3 Compliant
ICL3232CPZ	Renesas Electronics	RS232	2/2	250 kbps	3V ~ 5.5V	0°C ~ 70°C	300 mV	16-DIP	Active	ROHS3 Compliant
LT1081CN#PBF	Analog Devices	RS232	2/2	250 kbps	4.5V ~ 5.5V	0°C ~ 70°C	400 mV	16-DIP	Active	ROHS3 Compliant
LT1081IN#PBF	Analog Devices	RS232	2/2	250 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	400 mV	16-DIP	Active	ROHS3 Compliant
LT1781IN#PBF	Analog Devices	RS232	2/2	250 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	400 mV	16-DIP	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Preferred): MAX3232EEPE+ is the recommended substitute, offering identical electrical and mechanical specifications while maintaining active product status and ROHS3 compliance. This part eliminates obsolescence risk without design modification.

Extended Temperature Range Applications: ADM1181AANZ, ADM202EANZ, ADM232AANZ, LT1081IN#PBF, and LT1781IN#PBF support the full -40°C to 85°C operating range required by the original part. These options are suitable for industrial and automotive environments.

3V Supply Compatibility: ADM3202ANZ and ICL3232CPZ maintain the 3V minimum supply voltage of the original MAX3232EEPE, accommodating low-voltage system designs. ADM3202ANZ additionally supports higher data rates (460 kbps).

Restricted Temperature Range: ICL3232CPZ and LT1081CN#PBF operate within 0°C to 70°C and are suitable only for commercial-grade applications with narrower temperature requirements.

Voltage Supply Constraints: ADM1181AANZ, ADM202EANZ, ADM232AANZ, ADM232LANZ, LT1081CN#PBF, LT1081IN#PBF, and LT1781IN#PBF require minimum 4.5V supply and are not compatible with 3V-only systems.

All substitute parts listed carry ROHS3 compliance, addressing regulatory requirements absent in the obsolete MAX3232EEPE.

Frequently Asked Questions (FAQ)

Q: Can MAX3232EEPE be directly replaced with MAX3232EEPE+?

A: Yes. MAX3232EEPE+ is the parametric equivalent with identical electrical specifications, package, and pinout. It is the recommended direct replacement for obsolete MAX3232EEPE applications.

Q: Which substitutes support 3V supply operation?

A: MAX3232EEPE+, ADM3202ANZ, and ICL3232CPZ support the 3V to 5.5V supply range. All other substitutes require minimum 4.5V.

Q: Are all substitutes pin-compatible with MAX3232EEPE?

A: All listed substitutes use the 16-DIP package with identical pinout and through-hole mounting. Pin compatibility is maintained across all options.

Q: Which substitutes maintain the full -40°C to 85°C operating temperature range?

A: MAX3232EEPE+, ADM1181AANZ, ADM202EANZ, ADM232AANZ, ADM232LANZ, ADM3202ANZ, LT1081IN#PBF, and LT1781IN#PBF support the complete temperature range. ICL3232CPZ and LT1081CN#PBF are limited to 0°C to 70°C.

Q: What is the data rate capability of each substitute?

A: MAX3232EEPE+ matches the original at 250 kbps. ADM3202ANZ offers the highest rate at 460 kbps. ADM1181AANZ and ADM202EANZ support 230 kbps. ADM232AANZ supports 200 kbps. ADM232LANZ supports 120 kbps. ICL3232CPZ, LT1081CN#PBF, LT1081IN#PBF, and LT1781IN#PBF all support 250 kbps.

Q: Do all substitutes meet RoHS compliance?

A: Yes. All substitute parts are ROHS3 compliant, whereas the original MAX3232EEPE is RoHS non-compliant.

Q: Which substitutes have the highest inventory availability?

A: MAX3232EEPE+ has 13,455 units in stock. ADM202EANZ has 10,930 units. ICL3232CPZ has 7,900 units. ADM3202ANZ has 5,400 units.

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