MAX3320LEAP Equivalent & Substitute Parts

Part Overview

The MAX3320LEAP is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-SSOP surface mount package. This interface IC operates across a 3V to 5.5V supply range with a 250kbps data rate and 300mV receiver hysteresis, designed for serial communication applications requiring bidirectional RS232 signal conversion.

The MAX3320LEAP carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this transceiver.

Key Parameters

Parameter	Specification
Protocol	RS232
Type	Transceiver
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	250kbps
Voltage Supply Range	3V ~ 5.5V
Operating Temperature Range	-40°C ~ 85°C
Receiver Hysteresis	300mV
Package Type	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the MAX3320LEAP are qualified based on strict parametric equivalence across the following criteria:

RS232 protocol compliance
2/2 driver/receiver configuration with full-duplex operation
250kbps data rate capability
3V to 5.5V supply voltage range
-40°C to 85°C operating temperature range
300mV receiver hysteresis
20-SSOP surface mount package with identical 0.209" (5.30mm) width

All identified substitutes meet these electrical and mechanical parameters without exception. Substitution is valid where these parameters align precisely with the original part specification.

Parameter Comparison

Parameter	MAX3320LEAP	MAX3320BEAP+	MAX3320TEAP+	ICL3223IAZ
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Renesas Electronics Corporation
Protocol	RS232	RS232	RS232	RS232
Type	Transceiver	Transceiver	Transceiver	Transceiver
Drivers/Receivers	2/2	2/2	2/2	2/2
Duplex	Full	Full	Full	Full
Data Rate	250kbps	250kbps	250kbps	250kbps
Voltage Supply	3V ~ 5.5V	3V ~ 5.5V	3V ~ 5.5V	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Receiver Hysteresis	300mV	300mV	300mV	300mV
Package	20-SSOP (0.209", 5.30mm Width)	20-SSOP (0.209", 5.30mm Width)	20-SSOP (0.209", 5.30mm Width)	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

All three substitute parts—MAX3320BEAP+, MAX3320TEAP+, and ICL3223IAZ—are parametrically equivalent to the MAX3320LEAP and satisfy the core electrical and mechanical requirements for direct substitution.

MAX3320BEAP+ and MAX3320TEAP+ are both manufactured by Analog Devices Inc./Maxim Integrated and maintain identical specifications to the original part. Both carry active product status and ROHS3 compliance, with MSL rating of 1 (Unlimited). These parts represent the most direct path for design continuity within the Maxim product family.

ICL3223IAZ, manufactured by Renesas Electronics Corporation, provides an alternative from a different manufacturer while maintaining full parametric equivalence. This part carries active product status and ROHS3 compliance. The MSL rating is 3 (168 Hours), which differs from the Maxim variants and may require adjusted handling procedures during assembly and storage.

Selection should be based on supply availability, lead time requirements, and organizational procurement preferences. All three parts are suitable for applications requiring RS232 transceiver functionality within the specified electrical and thermal operating ranges.

Frequently Asked Questions (FAQ)

Q: Can MAX3320BEAP+ directly replace MAX3320LEAP in existing designs?

A: Yes. MAX3320BEAP+ meets all parametric requirements: identical RS232 protocol, 2/2 driver/receiver configuration, 250kbps data rate, 3V to 5.5V supply range, -40°C to 85°C operating temperature, 300mV receiver hysteresis, and 20-SSOP package dimensions. No design modifications are required.

Q: What is the difference between MAX3320TEAP+ and MAX3320BEAP+?

A: Both parts are manufactured by Analog Devices Inc./Maxim Integrated and are parametrically identical. The difference lies in packaging format: MAX3320BEAP+ is supplied in Tube packaging, while MAX3320TEAP+ is also supplied in Tube packaging. Both carry identical electrical specifications and compliance certifications.

Q: Is ICL3223IAZ a suitable substitute despite being from a different manufacturer?

A: Yes. ICL3223IAZ from Renesas Electronics Corporation meets all electrical and mechanical parameters required for substitution. The primary consideration is the Moisture Sensitivity Level (MSL 3 versus MSL 1 for Maxim variants), which requires adherence to specific handling and storage protocols during assembly to prevent moisture absorption.

Q: Are there any compliance differences between the substitute parts?

A: MAX3320BEAP+ and MAX3320TEAP+ are ROHS3 compliant, while the original MAX3320LEAP is RoHS non-compliant. ICL3223IAZ is also ROHS3 compliant. All three substitutes are REACH Unaffected and carry EAR99 ECCN classification.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All substitute parts share identical 20-SSOP package dimensions (0.209", 5.30mm width) and surface mount configuration, enabling direct PCB footprint compatibility without layout modifications.

Q: What inventory availability exists for these substitutes?

A: MAX3320BEAP+ has 624 units in stock, MAX3320TEAP+ has 953 units in stock, and ICL3223IAZ has 1416 units in stock. Availability should be confirmed with your supplier for current stock status.

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