MAX232EESE RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX232EESE is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-SOIC surface mount package. This interface IC operates across the 4.5V to 5.5V supply range with a 120 kbps data rate and 500 mV receiver hysteresis. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX232EESE
Manufacturer	Analog Devices Inc./Maxim Integrated
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	120 kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MAX232EESE is determined by strict adherence to the following electrical and mechanical parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Package / Case: 16-SOIC (0.154", 3.90mm Width)

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

MFR Recommended: Direct replacements from the same manufacturer with improved product status and compliance
Parametric Equivalent: Parts meeting all core electrical and mechanical parameters with active product status
Direct Equivalent: Cross-manufacturer alternatives with identical functional specifications

Parameter Comparison

Part Number	Manufacturer	Product Status	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Supply Voltage	Operating Temp	Package	RoHS Status	Inventory
MAX232EESE	Analog Devices Inc./Maxim Integrated	Obsolete	RS232	2/2	120 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	RoHS non-compliant	1201 Pcs
MAX232EESE+T	Analog Devices Inc./Maxim Integrated	Active	RS232	2/2	120 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	30400 Pcs
MAX202EESE+	Analog Devices Inc./Maxim Integrated	Active	RS232	2/2	120 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	3160 Pcs
MAX202ESE+	Analog Devices Inc./Maxim Integrated	Active	RS232	2/2	120 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	2196 Pcs
MAX220ESE+	Analog Devices Inc./Maxim Integrated	Active	RS232	2/2	120 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	2240 Pcs
MAX232EESE+	Analog Devices Inc./Maxim Integrated	Active	RS232	2/2	120 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	54742 Pcs
MAX232ESE+	Analog Devices Inc./Maxim Integrated	Active	RS232	2/2	120 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	1869 Pcs
MAX232EID	Texas Instruments	Obsolete	RS232	2/2	250 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	2200 Pcs
MAX232EIDR	Texas Instruments	Active	RS232	2/2	250 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	54300 Pcs
ST232EBDR	STMicroelectronics	Active	RS232	2/2	230 kbps	500 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	27360 Pcs
ADM202EARNZ	Analog Devices Inc.	Active	RS232	2/2	230 kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	7155 Pcs

Engineering Selection Recommendations

For applications currently using the obsolete MAX232EESE, the following selection criteria apply:

Primary Recommendation: MAX232EESE+T or MAX232EESE+ are direct functional replacements from Analog Devices Inc./Maxim Integrated with identical electrical specifications, active product status, and ROHS3 compliance. These parts maintain the same 120 kbps data rate and 500 mV receiver hysteresis as the original.

Alternative from Same Manufacturer: MAX202EESE+, MAX202ESE+, and MAX220ESE+ are parametric equivalents meeting all core electrical and mechanical requirements with active product status and ROHS3 compliance.

Cross-Manufacturer Alternatives: MAX232EIDR (Texas Instruments) and ST232EBDR (STMicroelectronics) provide functional equivalence with higher data rates (250 kbps and 230 kbps respectively) and active product status. ST232EBDR carries MSL-3 moisture sensitivity versus MSL-1 for other options.

Secondary Option: ADM202EARNZ (Analog Devices Inc.) meets all core parameters with active status and ROHS3 compliance but features 650 mV receiver hysteresis and 230 kbps data rate, differing from the original specification.

All substitute parts maintain the 16-SOIC surface mount package, 4.5V to 5.5V supply range, and -40°C to 85°C operating temperature of the original part.

Frequently Asked Questions (FAQ)

Q: Can MAX232EESE+ be used as a direct replacement for MAX232EESE?

A: Yes. MAX232EESE+ is functionally identical to MAX232EESE with the same electrical specifications (120 kbps data rate, 500 mV receiver hysteresis, 2/2 drivers/receivers, full duplex RS232). The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant). Both use the 16-SOIC package.

Q: What is the difference between MAX232EESE+T and MAX232EESE+?

A: The primary difference is packaging. MAX232EESE+T is supplied in Cut Tape (CT) & Digi-Reel format, while MAX232EESE+ is supplied in Tube packaging. Electrical specifications and product status are identical.

Q: Are MAX202EESE+ and MAX220ESE+ compatible with MAX232EESE applications?

A: Yes. Both parts meet all core substitution parameters: RS232 protocol, 2/2 drivers/receivers, full duplex operation, 4.5V to 5.5V supply, -40°C to 85°C operating temperature, and 16-SOIC package. All three maintain 500 mV receiver hysteresis and 120 kbps data rate.

Q: Can cross-manufacturer parts like MAX232EIDR or ST232EBDR replace MAX232EESE?

A: Yes, with consideration of data rate differences. MAX232EIDR (Texas Instruments) and ST232EBDR (STMicroelectronics) maintain all core electrical and mechanical parameters. MAX232EIDR operates at 250 kbps and ST232EBDR at 230 kbps, both exceeding the original 120 kbps specification. Both are ROHS3 compliant with active product status.

Q: What is the significance of receiver hysteresis in substitution?

A: Receiver hysteresis affects noise immunity and signal detection margins. The original MAX232EESE specifies 500 mV hysteresis. Most substitutes maintain this specification. ADM202EARNZ features 650 mV hysteresis, providing enhanced noise immunity at the cost of slightly reduced sensitivity to weak input signals.

Q: Does package type affect electrical performance?

A: No. Cut Tape (CT) & Digi-Reel and Tube packaging formats contain identical die and electrical characteristics. Packaging differences relate only to supply format and handling.

Q: What does MSL rating indicate for these parts?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions before soldering. MSL-1 (unlimited) parts like MAX232EESE+ have no time restrictions. ST232EBDR carries MSL-3 (168 hours), requiring controlled storage and handling.

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