MAX3223ECAP RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX3223ECAP is a full-duplex RS232 transceiver IC manufactured by Analog Devices Inc./Maxim Integrated, configured with 2 drivers and 2 receivers in a 20-SSOP surface mount package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The part operates across a 3V to 5.5V supply range with a 250 kbps data rate and supports industrial temperature ranges from -40°C to 85°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX3223ECAP
Manufacturer	Analog Devices Inc./Maxim Integrated
Product Category	Interface - RS232 Transceiver
Type	Transceiver
Protocol	RS232
Drivers/Receivers Configuration	2/2 Full Duplex
Data Rate	250 kbps
Supply Voltage Range	3V to 5.5V
Operating Temperature Range	-40°C to 85°C
Receiver Hysteresis	500 mV
Package Type	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS Non-Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX3223ECAP is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

RS232 protocol compliance
2/2 driver/receiver configuration with full duplex operation
250 kbps data rate capability
500 mV receiver hysteresis
3V to 5.5V supply voltage range
20-SSOP package footprint (0.209", 5.30mm Width)
Surface mount technology

Secondary Considerations:

Operating temperature range compatibility (-40°C to 85°C preferred for industrial applications; 0°C to 70°C acceptable for commercial-grade substitutes)
Product status (Active preferred over Obsolete)
RoHS compliance status (ROHS3 Compliant preferred)
Packaging format (Tube, Cut Tape, Tape & Reel)
Moisture sensitivity level

Substitute parts are grouped into three categories: Parametric Equivalents (identical electrical specifications, different product status or packaging), Direct Equivalents (cross-manufacturer alternatives with matching parameters), and Manufacturer-Recommended Upgrades (enhanced specifications or package variants).

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Package	Product Status	RoHS Status	Packaging Format
MAX3223ECAP	Analog Devices/Maxim	2/2 Full	250 kbps	3V - 5.5V	-40°C to 85°C	20-SSOP	Obsolete	Non-Compliant	Tube
MAX3223ECAP+	Analog Devices/Maxim	2/2 Full	250 kbps	3V - 5.5V	-40°C to 85°C	20-SSOP	Active	ROHS3 Compliant	Tube
MAX3224EAP+	Analog Devices/Maxim	2/2 Full	250 kbps	3V - 5.5V	-40°C to 85°C	20-SSOP	Active	ROHS3 Compliant	Tube
MAX3224EEAP+	Analog Devices/Maxim	2/2 Full	250 kbps	3V - 5.5V	-40°C to 85°C	20-SSOP	Active	ROHS3 Compliant	Tube
ICL3225ECAZ	Renesas Electronics	2/2 Full	250 kbps	3V - 5.5V	0°C to 70°C	20-SSOP	Active	ROHS3 Compliant	Tube
ICL3225ECAZ-T	Renesas Electronics	2/2 Full	250 kbps	3V - 5.5V	0°C to 70°C	20-SSOP	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
MAX3223CDB	Texas Instruments	2/2 Full	250 kbps	3V - 5.5V	0°C to 70°C	20-SSOP	Obsolete	ROHS3 Compliant	Tube
MAX3223CDBR	Texas Instruments	2/2 Full	250 kbps	3V - 5.5V	0°C to 70°C	20-SSOP	Obsolete	ROHS3 Compliant	Cut Tape
MAX3223IDBR	Texas Instruments	2/2 Full	250 kbps	3V - 5.5V	-40°C to 85°C	20-SSOP	Obsolete	ROHS3 Compliant	Cut Tape & Digi-Reel
ICL3223EIVZ	Renesas Electronics	2/2 Full	250 kbps	3V - 5.5V	-40°C to 85°C	20-TSSOP	Active	ROHS3 Compliant	Tube
ICL3223EIVZ-T	Renesas Electronics	2/2 Full	250 kbps	3V - 5.5V	-40°C to 85°C	20-TSSOP	Active	ROHS3 Compliant	Tape & Reel

Engineering Selection Recommendations

For Direct Replacement (Same Package - 20-SSOP):

MAX3223ECAP+ and MAX3224EAP+ are the preferred substitutes. Both are Active products with ROHS3 compliance, maintaining identical electrical specifications and the same 20-SSOP package footprint. MAX3223ECAP+ provides the closest functional match as a direct product line continuation. MAX3224EAP+ represents an alternative from the same manufacturer family with equivalent performance characteristics.

For Commercial Temperature Range Applications (0°C to 70°C):

ICL3225ECAZ and ICL3225ECAZ-T from Renesas Electronics are suitable alternatives when industrial temperature range is not required. Both maintain full electrical equivalence and offer Active product status with ROHS3 compliance. ICL3225ECAZ-T provides tape and reel packaging for automated assembly environments.

For Extended Temperature Range with Alternative Packaging:

ICL3223EIVZ and ICL3223EIVZ-T maintain the -40°C to 85°C operating range and are manufacturer-recommended alternatives. These parts use a 20-TSSOP package (0.173", 4.40mm Width) instead of 20-SSOP, requiring PCB layout modification. Both are Active products with ROHS3 compliance.

Obsolete Product Alternatives:

MAX3223CDB, MAX3223CDBR, and MAX3223IDBR are not recommended for new designs due to obsolete status, though they remain electrically equivalent. These should only be considered for legacy system maintenance where existing inventory exists.

Frequently Asked Questions (FAQ)

Q: Can MAX3223ECAP+ be used as a direct drop-in replacement for MAX3223ECAP?

A: Yes. MAX3223ECAP+ is electrically and mechanically identical to MAX3223ECAP, with the primary difference being Active product status and ROHS3 compliance. The 20-SSOP package footprint is identical, requiring no PCB modifications.

Q: What is the difference between MAX3223ECAP+ and MAX3224EAP+?

A: Both parts are functionally equivalent RS232 transceivers with 2/2 driver/receiver configuration, 250 kbps data rate, and 3V to 5.5V supply range in 20-SSOP packages. The difference lies in the base product series designation (MAX3223 versus MAX3224), though electrical performance is identical for this application.

Q: Can ICL3223EIVZ-T replace MAX3223ECAP in existing designs?

A: ICL3223EIVZ-T is electrically equivalent but uses a 20-TSSOP package (0.173", 4.40mm Width) instead of 20-SSOP (0.209", 5.30mm Width). PCB layout modification is required. The part is suitable for new designs or redesigns but not for direct board-level substitution.

Q: Why do some substitutes have a narrower operating temperature range (0°C to 70°C)?

A: ICL3225ECAZ and ICL3225ECAZ-T are commercial-grade parts rated for 0°C to 70°C, compared to the industrial-grade -40°C to 85°C range of MAX3223ECAP. Selection depends on the application's environmental requirements. Industrial applications requiring extended temperature operation should use MAX3223ECAP+, MAX3224EAP+, or ICL3223EIVZ variants.

Q: What does ROHS3 compliance mean for this part?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. MAX3223ECAP is RoHS non-compliant, while all recommended active substitutes (MAX3223ECAP+, MAX3224EAP+, ICL3225ECAZ, ICL3223EIVZ) are ROHS3 compliant, making them suitable for applications with environmental or regulatory requirements.

Q: What packaging formats are available for RS232 transceiver substitutes?

A: Available formats include Tube (standard packaging), Cut Tape (CT), Tape & Reel (TR), and Digi-Reel. Selection depends on assembly method: Tube for manual or small-batch assembly, Cut Tape for semi-automated processes, and Tape & Reel for high-volume automated pick-and-place operations.

Q: Are there any functional differences between Analog Devices/Maxim and Renesas alternatives?

A: All listed substitutes maintain identical RS232 protocol compliance, 2/2 driver/receiver configuration, 250 kbps data rate, and 500 mV receiver hysteresis. Functional differences are limited to package type (SSOP versus TSSOP), operating temperature range, and product status. Electrical performance is equivalent across manufacturers.

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