MAX3222CDB Equivalent & Substitute Parts

Part Overview

The MAX3222CDB is a 2/2 full-duplex RS232 transceiver IC in 20-SSOP surface mount packaging, manufactured by Texas Instruments. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The MAX3222CDB operates across a 3V to 5.5V supply range with a 250kbps data rate and 300mV receiver hysteresis, designed for applications requiring RS232 serial communication interfaces.

Key Parameters

Parameter	MAX3222CDB
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	250kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	20-SSOP (0.209", 5.30mm Width)
Receiver Hysteresis	300 mV
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MAX3222CDB is determined by the following critical parameters:

Protocol: RS232 (all substitutes must maintain RS232 compatibility)
Configuration: 2/2 drivers/receivers, full-duplex operation
Package: 20-SSOP surface mount form factor (0.209", 5.30mm width)
Supply Voltage: 3V ~ 5.5V operating range
Electrical Compatibility: Receiver hysteresis, data rate, and operating temperature ranges

Substitute parts are grouped into two categories:

Direct Equivalents maintain the same electrical specifications and package form factor as the MAX3222CDB, ensuring pin-for-pin compatibility and identical performance characteristics.

Upgrade Alternatives offer enhanced specifications such as higher data rates, extended temperature ranges, or improved receiver hysteresis while maintaining the same package footprint and core RS232 2/2 transceiver functionality.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temp	Package	Product Status
MAX3222CDB	Texas Instruments	RS232	2/2	250kbps	300 mV	0°C ~ 70°C	20-SSOP	Obsolete
MAX3222EIDBR	Texas Instruments	RS232	2/2	500kbps	300 mV	-40°C ~ 85°C	20-SSOP	Active
MAX3222EEAP+	Analog Devices Inc./Maxim Integrated	RS232	2/2	1Mbps	500 mV	-40°C ~ 85°C	20-SSOP	Active
MAX3222EEAP+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	1Mbps	500 mV	-40°C ~ 85°C	20-SSOP	Active
SP3222EBEA-L/TR	MaxLinear, Inc.	RS232	2/2	250kbps	300 mV	-40°C ~ 85°C	20-SSOP	Active
ST3222EBPR	STMicroelectronics	RS232	2/2	250kbps	500 mV	-40°C ~ 85°C	20-SSOP	Active
ADM3222ARSZ	Analog Devices Inc.	RS232	2/2	460Kbps	400 mV	-40°C ~ 85°C	20-SSOP	Active
ADM3222ARSZ-REEL	Analog Devices Inc.	RS232	2/2	460Kbps	400 mV	-40°C ~ 85°C	20-SSOP	Active
ADM3222ARSZ-REEL7	Analog Devices Inc.	RS232	2/2	460Kbps	400 mV	-40°C ~ 85°C	20-SSOP	Active
ADM3222ARUZ	Analog Devices Inc.	RS232	2/2	460Kbps	400 mV	-40°C ~ 85°C	20-TSSOP	Active
ADM3222ARUZ-REEL	Analog Devices Inc.	RS232	2/2	460Kbps	400 mV	-40°C ~ 85°C	20-TSSOP	Active

Engineering Selection Recommendations

For Direct Replacement (20-SSOP Package)

MAX3222EIDBR is the primary recommended substitute from Texas Instruments. It maintains the same manufacturer lineage as the MAX3222CDB while offering active product status, extended operating temperature range (-40°C to 85°C), and doubled data rate capability (500kbps). Both parts are ROHS3 compliant with identical supply voltage specifications.

SP3222EBEA-L/TR from MaxLinear provides an alternative with matching electrical specifications (250kbps data rate, 300mV hysteresis) and extended temperature range. This part is suitable for applications requiring identical performance characteristics to the original MAX3222CDB.

ST3222EBPR from STMicroelectronics offers active status with extended temperature support and maintains the 20-SSOP package form factor. The 500mV receiver hysteresis provides enhanced noise immunity compared to the original specification.

For Enhanced Performance (20-SSOP Package)

MAX3222EEAP+ and MAX3222EEAP+T deliver upgraded specifications with 1Mbps data rate and 500mV receiver hysteresis, supporting more demanding serial communication applications while maintaining the same package footprint and supply voltage range.

For Alternative Packaging (20-TSSOP)

ADM3222ARUZ and ADM3222ARUZ-REEL provide the same electrical performance as other ADM3222 variants but in a narrower 20-TSSOP package (0.173", 4.40mm width). These parts are suitable only for designs that can accommodate the different package geometry.

Compliance Considerations

All recommended substitutes maintain ROHS3 compliance and EAR99 export classification consistent with the original MAX3222CDB. Moisture sensitivity levels vary across substitutes; verify MSL requirements for your specific assembly and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can MAX3222EIDBR directly replace MAX3222CDB in existing designs?

A: Yes. MAX3222EIDBR maintains identical pin configuration, package footprint (20-SSOP), supply voltage range (3V ~ 5.5V), and RS232 2/2 transceiver functionality. The higher data rate (500kbps vs. 250kbps) and extended temperature range are backward compatible with applications designed for the original part.

Q: What is the difference between ADM3222ARSZ, ADM3222ARSZ-REEL, and ADM3222ARSZ-REEL7?

A: These three part numbers are electrically identical with the same 20-SSOP package, 460Kbps data rate, and 400mV receiver hysteresis. The differences are in packaging format: ARSZ is supplied in tube packaging, while ARSZ-REEL and ARSZ-REEL7 are supplied on cut tape with Digi-Reel. Select based on your procurement and assembly requirements.

Q: Why do ADM3222ARUZ and ADM3222ARUZ-REEL use a different package (20-TSSOP)?

A: The 20-TSSOP package is a narrower variant (0.173" vs. 0.209" width) of the standard SSOP. These parts are electrically equivalent to other ADM3222 variants but require PCB layout modifications to accommodate the different package geometry. Use only if your design supports 20-TSSOP footprints.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitutes are ROHS3 compliant. Verify specific REACH status and moisture sensitivity levels (MSL) for your application, as these vary across manufacturers and packaging options.

Q: What is the operating temperature range difference between MAX3222CDB and its substitutes?

A: The original MAX3222CDB operates from 0°C to 70°C. All active substitute parts extend this range to -40°C to 85°C, providing broader environmental support for industrial and extended-temperature applications.

Q: Can I use MAX3222EEAP+ as a drop-in replacement for MAX3222CDB?

A: Yes, for 20-SSOP package applications. MAX3222EEAP+ offers enhanced specifications (1Mbps data rate, 500mV hysteresis, -40°C to 85°C) while maintaining the same pin configuration and package footprint. The improved performance is backward compatible with designs expecting the original 250kbps specification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message