MAX3223ECDB Equivalent & Substitute Parts

Part Overview

The MAX3223ECDB is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 20-SSOP surface mount package. This interface IC operates across a 3V to 5.5V supply range with a 500kbps data rate and 500mV receiver hysteresis. The device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain functional compatibility while meeting the same electrical and mechanical specifications.

Key Parameters

Parameter	MAX3223ECDB
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	500kbps
Voltage Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package/Case	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the MAX3223ECDB is determined by the following critical parameters:

Package Compatibility: The 20-SSOP package footprint (0.209", 5.30mm width) is the primary mechanical constraint. Substitute parts must use identical or pin-compatible packages.

Electrical Specifications: Protocol (RS232), driver/receiver configuration (2/2), duplex mode (full), supply voltage range (3V ~ 5.5V), and receiver hysteresis (500mV) define functional equivalence.

Data Rate: The 500kbps specification establishes minimum performance requirements. Substitutes with equal or higher data rates maintain compatibility.

Temperature Range: The original 0°C ~ 70°C operating range defines the thermal envelope. Substitutes with extended ranges (-40°C ~ 85°C) provide enhanced capability without compromising the original specification.

Compliance: RoHS3 compliance and MSL ratings ensure environmental and handling compatibility.

Substitutes are grouped into two categories:

Direct Equivalents (20-SSOP Package): Parts maintaining the identical 20-SSOP package with matching or superior electrical parameters.

Package Variants (20-TSSOP Package): Parts with identical electrical specifications but housed in the 20-TSSOP package (0.173", 4.40mm width), requiring PCB redesign but offering space optimization.

Parameter Comparison

Part Number	Manufacturer	Package	Drivers/Receivers	Protocol	Data Rate	Receiver Hysteresis	Voltage Supply	Operating Temp	Product Status	RoHS Status
MAX3223ECDB	Texas Instruments	20-SSOP	2/2	RS232	500kbps	500mV	3V ~ 5.5V	0°C ~ 70°C	Obsolete	ROHS3
MAX3223EIDBR	Texas Instruments	20-SSOP	2/2	RS232	500kbps	500mV	3V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3
ICL3223IAZ	Renesas Electronics	20-SSOP	2/2	RS232	250kbps	300mV	3V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3
ICL3223IAZ-T	Renesas Electronics	20-SSOP	2/2	RS232	250kbps	300mV	3V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3
SP3223EEA-L	MaxLinear, Inc.	20-SSOP	2/2	RS232	235Kbps	300mV	3V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3
SP3223EEA-L/TR	MaxLinear, Inc.	20-SSOP	2/2	RS232	235Kbps	300mV	3V ~ 5.5V	-40°C ~ 85°C	Active	RoHS
ICL3223EIVZ	Renesas Electronics	20-TSSOP	2/2	RS232	250kbps	500mV	3V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3
ICL3223EIVZ-T	Renesas Electronics	20-TSSOP	2/2	RS232	250kbps	500mV	3V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3
ICL3223IVZ	Renesas Electronics	20-TSSOP	2/2	RS232	250kbps	300mV	3V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3
ICL3223IVZ-T	Renesas Electronics	20-TSSOP	2/2	RS232	250kbps	300mV	3V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3
ICL3225ECAZ	Renesas Electronics	20-SSOP	2/2	RS232	250kbps	500mV	3V ~ 5.5V	0°C ~ 70°C	Active	ROHS3

Engineering Selection Recommendations

Primary Substitute (Direct Replacement): MAX3223EIDBR is the manufacturer-recommended direct substitute. It maintains identical electrical specifications (500kbps data rate, 500mV receiver hysteresis) and package form factor (20-SSOP). The extended operating temperature range (-40°C ~ 85°C) exceeds the original specification. Active product status ensures long-term availability and supply continuity. ROHS3 compliance matches the original device.

Secondary Substitutes (20-SSOP Package): ICL3223IAZ, ICL3223IAZ-T, SP3223EEA-L, and SP3223EEA-L/TR are functionally compatible alternatives in the 20-SSOP package. These devices operate at reduced data rates (250kbps or 235Kbps) and feature 300mV receiver hysteresis. Applications requiring the full 500kbps data rate and 500mV hysteresis of the original device should not use these alternatives. All maintain active product status and ROHS3 compliance.

Package Variant Substitutes (20-TSSOP Package): ICL3223EIVZ, ICL3223EIVZ-T, ICL3223IVZ, and ICL3223IVZ-T offer electrical compatibility within a smaller 20-TSSOP package footprint. ICL3223EIVZ and ICL3223EIVZ-T preserve the 500mV receiver hysteresis specification. These options require PCB layout redesign due to package geometry differences but provide space optimization benefits. All maintain active status and ROHS3 compliance.

Temperature-Matched Substitute: ICL3225ECAZ matches the original 0°C ~ 70°C operating temperature range while maintaining 500mV receiver hysteresis in the 20-SSOP package. This device is suitable for applications with identical thermal requirements and provides an alternative to MAX3223EIDBR when extended temperature capability is not required.

Frequently Asked Questions (FAQ)

Q: Can MAX3223EIDBR directly replace MAX3223ECDB without PCB modifications?

A: Yes. MAX3223EIDBR is pin-compatible and uses the identical 20-SSOP package. No PCB layout changes are required. The extended operating temperature range provides enhanced capability without affecting existing designs.

Q: What is the impact of using ICL3223IAZ instead of MAX3223ECDB?

A: ICL3223IAZ operates at 250kbps maximum data rate compared to the original 500kbps specification. Receiver hysteresis is reduced to 300mV from 500mV. These differences may affect noise immunity and maximum communication speed. Use only in applications where reduced data rate and hysteresis are acceptable.

Q: Are 20-TSSOP package variants (ICL3223EIVZ, ICL3223EIVZ-T) suitable for existing MAX3223ECDB designs?

A: 20-TSSOP variants require PCB redesign due to different package geometry and pin spacing. Electrical specifications are compatible, but physical layout changes are mandatory. These options are suitable only for new designs or redesigned boards where space optimization is beneficial.

Q: What is the difference between ICL3223EIVZ and ICL3223IVZ?

A: Both use the 20-TSSOP package and operate at 250kbps. ICL3223EIVZ maintains 500mV receiver hysteresis matching the original device. ICL3223IVZ features 300mV receiver hysteresis. Select ICL3223EIVZ for applications requiring the original hysteresis specification.

Q: Why do some substitutes have lower data rates (235Kbps or 250Kbps) than the original 500kbps?

A: SP3223EEA-L and ICL3223 series devices are designed with different performance characteristics. Lower data rates reflect design optimization for different application requirements. Verify that reduced data rate specifications meet system requirements before selection.

Q: Is RoHS compliance maintained across all substitute options?

A: All listed substitutes maintain ROHS3 compliance except SP3223EEA-L/TR, which carries RoHS compliance. Both certifications satisfy environmental regulatory requirements. Verify specific compliance requirements for your application and region.

Q: Can ICL3225ECAZ be used as a direct substitute?

A: ICL3225ECAZ is compatible in the 20-SSOP package with matching 500mV receiver hysteresis and 0°C ~ 70°C temperature range. Data rate is 250kbps. Use only in applications where reduced data rate is acceptable and temperature range matches original specifications.

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