MAX232CSE RS232 Transceiver Interface IC Equivalent & Substitute Parts

Part Overview

The MAX232CSE 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-SOIC surface mount package. This component is classified as obsolete, indicating discontinued production and limited availability from original sources. Identifying parametrically equivalent and functionally compatible substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support legacy system maintenance and new production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX232CSE
Manufacturer	Analog Devices Inc./Maxim Integrated
Product Category	Interface
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex Mode	Full
Receiver Hysteresis	500 mV
Data Rate	120 Kbps
Supply Voltage Range	4.5V ~ 5.5V
Operating Temperature Range	0°C ~ 70°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

Substitute parts for the MAX232CSE are selected based on strict parametric equivalence across the following critical criteria:

Electrical Parameters (Must Match):

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex Mode: Full
Receiver Hysteresis: 500 mV
Data Rate: 120 Kbps
Supply Voltage Range: 4.5V ~ 5.5V
Operating Temperature Range: 0°C ~ 70°C

Mechanical Parameters (Must Match):

Mounting Type: Surface Mount
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package: 16-SOIC

Compliance & Regulatory (Noted for Selection Context):

RoHS Status
Moisture Sensitivity Level (MSL)
REACH Status
ECCN / HTSUS Classification

All substitute parts listed maintain identical electrical and mechanical specifications to the MAX232CSE, ensuring direct functional compatibility in circuit applications. Differences in product status (Active vs. Obsolete) and RoHS compliance are documented to support procurement and regulatory decision-making.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Package	Product Status	RoHS Status	MSL
MAX232CSE	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	RoHS non-compliant	1
MAX202CSE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	ROHS3 Compliant	1
MAX202ECSE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	ROHS3 Compliant	1
MAX220CSE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	ROHS3 Compliant	1
MAX232CSE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	ROHS3 Compliant	1
MAX232ECSE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	ROHS3 Compliant	1
HIN202CBNZ	Renesas Electronics Corporation	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	ROHS3 Compliant	2
MAX202CD	Texas Instruments	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3 Compliant	1
MAX232D	Texas Instruments	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3 Compliant	1
MAX232DG4	Texas Instruments	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3 Compliant	1
TRS202ECD	Texas Instruments	RS232	2/2	120 Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3 Compliant	1

Engineering Selection Recommendations

Active Product Status Preference: For new designs and ongoing production, MAX202CSE+, MAX202ECSE+, MAX220CSE+, MAX232CSE+, MAX232ECSE+, and HIN202CBNZ are recommended as primary substitutes. These parts maintain active product status, ensuring continued availability and manufacturer support. All Analog Devices and Renesas variants carry ROHS3 compliance, meeting modern regulatory requirements.

Obsolete Product Consideration: MAX202CD, MAX232D, MAX232DG4, and TRS202ECD are classified as obsolete. These parts are suitable for legacy system repairs and maintenance where existing inventory is available. Procurement should prioritize active alternatives for new production to avoid future supply constraints.

Moisture Sensitivity Consideration: HIN202CBNZ carries MSL 2 (1 Year) compared to MSL 1 (Unlimited) for all other substitutes. This requires stricter moisture control during storage and handling. For applications with standard moisture management practices, MSL 1 parts are preferred.

Manufacturer Diversity: Analog Devices Inc./Maxim Integrated variants (MAX202, MAX220, MAX232 series) and Renesas HIN202CBNZ provide multi-source availability. Texas Instruments variants (MAX202CD, MAX232D, MAX232DG4, TRS202ECD) offer additional sourcing options, though with obsolete status.

Frequently Asked Questions (FAQ)

Q: Can MAX232CSE be directly replaced with MAX232CSE+? A: Yes. MAX232CSE+ is a direct parametric equivalent with identical electrical and mechanical specifications. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant vs. RoHS non-compliant). MAX232CSE+ is the recommended upgrade path.

Q: What is the difference between MAX202, MAX220, and MAX232 series substitutes? A: All three series (MAX202CSE+, MAX202ECSE+, MAX220CSE+, MAX232CSE+, MAX232ECSE+) are parametrically equivalent for the MAX232CSE application. They share identical RS232 transceiver specifications, driver/receiver configuration, data rate, voltage range, and package. Selection can be based on availability and inventory status.

Q: Is HIN202CBNZ a suitable substitute despite MSL 2 rating? A: Yes, HIN202CBNZ is parametrically equivalent and functionally compatible. The MSL 2 (1 Year) rating requires adherence to moisture control protocols during storage and handling. For standard manufacturing environments with proper moisture management, this part is suitable.

Q: Can obsolete parts like MAX202CD or MAX232D be used in new designs? A: Obsolete parts are not recommended for new production designs due to supply uncertainty and discontinued manufacturer support. They are suitable for legacy system maintenance and repair where existing inventory is available. For new designs, select from active status alternatives.

Q: Are all substitute parts pin-compatible with MAX232CSE? A: Yes. All substitute parts use the 16-SOIC package with identical pinout and mechanical dimensions (0.154", 3.90mm Width). Direct PCB footprint compatibility is confirmed.

Q: What is the significance of RoHS compliance for substitute selection? A: The original MAX232CSE is RoHS non-compliant. Active substitutes (MAX202CSE+, MAX202ECSE+, MAX220CSE+, MAX232CSE+, MAX232ECSE+, HIN202CBNZ) are ROHS3 compliant, meeting EU and global environmental regulations. For applications subject to RoHS requirements, compliant substitutes are mandatory.

Q: Can multiple substitute parts be used interchangeably in the same application? A: Yes. All listed substitute parts maintain identical electrical parameters (RS232 protocol, 2/2 driver/receiver configuration, 120 Kbps data rate, 4.5V ~ 5.5V supply, 0°C ~ 70°C operating range) and mechanical specifications (16-SOIC package). They are functionally interchangeable within the same circuit design.

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