ICL3223IAZ Equivalent & Substitute Parts

Part Overview

The ICL3223IAZ is a 2/2 full-duplex RS232 transceiver manufactured by Renesas Electronics Corporation 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 full RS232 protocol compliance. The part is currently in active production status with 1416 units in stock. Substitute parts are necessary when the ICL3223IAZ becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives with equivalent electrical performance.

Key Parameters

Parameter	Value
Manufacturer	Renesas Electronics Corporation
Part Number	ICL3223IAZ
Type	Transceiver
Protocol	RS232
Drivers/Receivers	2/2
Duplex	Full
Package	20-SSOP (0.209", 5.30mm Width)
Data Rate	250kbps
Supply Voltage	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Receiver Hysteresis	300mV
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)
Product Status	Active

Substitute Part Grouping Explanation

Substitution compatibility for the ICL3223IAZ is determined by the following critical parameters:

Primary Compatibility Criteria:

RS232 protocol compliance
2/2 driver/receiver configuration
Full-duplex operation
20-SSOP package format (0.209", 5.30mm Width)
Supply voltage range: 3V ~ 5.5V
Operating temperature range: -40°C ~ 85°C (or compatible subset)
Surface mount technology

Secondary Compatibility Considerations:

Data rate: 250kbps or higher
Receiver hysteresis: 300mV or higher
RoHS3 compliance
Moisture sensitivity level

Substitute parts are grouped into two categories: Direct Substitutes (identical package and core electrical specifications) and Similar Substitutes (compatible electrical function with minor parameter variations or different packaging formats).

Parameter Comparison

Part Number	Manufacturer	Package	Data Rate	Receiver Hysteresis	Operating Temp	Product Status	Packaging Type
ICL3223IAZ	Renesas Electronics	20-SSOP	250kbps	300mV	-40°C ~ 85°C	Active	Tube
MAX3223EIDB	Texas Instruments	20-SSOP	500kbps	500mV	-40°C ~ 85°C	Obsolete	Tube
MAX3223EIDBR	Texas Instruments	20-SSOP	500kbps	500mV	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel®
MAX3223CAP+	Analog Devices Inc./Maxim Integrated	20-SSOP	120Kbps	300mV	0°C ~ 70°C	Active	Tube
MAX3223CAP+T	Analog Devices Inc./Maxim Integrated	20-SSOP	120Kbps	300mV	0°C ~ 70°C	Active	Cut Tape (CT) & Digi-Reel®
MAX3223CDB	Texas Instruments	20-SSOP	250kbps	500mV	0°C ~ 70°C	Obsolete	Tube
MAX3223CDBR	Texas Instruments	20-SSOP	250kbps	500mV	0°C ~ 70°C	Obsolete	Cut Tape (CT)
MAX3223CPW	Texas Instruments	20-TSSOP	250kbps	500mV	0°C ~ 70°C	Obsolete	Tube
MAX3223CPWR	Texas Instruments	20-TSSOP	250kbps	500mV	0°C ~ 70°C	Obsolete	Cut Tape (CT)
MAX3223EAP+	Analog Devices Inc./Maxim Integrated	20-SSOP	120Kbps	300mV	-40°C ~ 85°C	Active	Tube
MAX3223EAP+T	Analog Devices Inc./Maxim Integrated	20-SSOP	120Kbps	300mV	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Preferred Direct Substitutes (20-SSOP Package, Active Status):

MAX3223EIDBR (Texas Instruments) is the primary active substitute in the 20-SSOP package format. This part maintains full compatibility with the ICL3223IAZ pinout and package dimensions while offering enhanced performance specifications (500kbps data rate, 500mV receiver hysteresis). The part is available in Cut Tape and Digi-Reel packaging with unlimited MSL rating, providing superior moisture handling compared to the ICL3223IAZ.

MAX3223EAP+ and MAX3223EAP+T (Analog Devices Inc./Maxim Integrated) are active alternatives in 20-SSOP packaging with identical operating temperature range (-40°C ~ 85°C) and receiver hysteresis (300mV) to the ICL3223IAZ. These parts are suitable for applications where the full extended temperature range is required.

Secondary Substitutes (20-SSOP Package, Limited Temperature Range):

MAX3223CAP+ and MAX3223CAP+T (Analog Devices Inc./Maxim Integrated) are active parts with matching receiver hysteresis (300mV) but operate within a narrower temperature range (0°C ~ 70°C). These parts are suitable only for applications that do not require the extended low-temperature operation of the ICL3223IAZ.

Obsolete Parts (Not Recommended for New Designs):

MAX3223EIDB, MAX3223CDB, MAX3223CDBR, MAX3223CPW, and MAX3223CPWR are all marked as obsolete and should not be selected for new designs. MAX3223CPW and MAX3223CPWR use a different package format (20-TSSOP) and are not pin-compatible with the ICL3223IAZ.

Compliance and Certification:

All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the ICL3223IAZ. Selection should prioritize active product status parts to ensure long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can MAX3223EIDBR directly replace ICL3223IAZ in existing designs?

A: Yes. MAX3223EIDBR is pin-compatible and functionally equivalent in the 20-SSOP package. The higher data rate (500kbps vs. 250kbps) and receiver hysteresis (500mV vs. 300mV) provide enhanced performance margins. No PCB modifications are required.

Q: What is the difference between MAX3223EAP+ and MAX3223CAP+?

A: Both parts share identical receiver hysteresis (300mV) and 20-SSOP packaging. The key difference is operating temperature range: MAX3223EAP+ operates from -40°C to 85°C (matching ICL3223IAZ), while MAX3223CAP+ operates from 0°C to 70°C. Select MAX3223EAP+ for applications requiring extended low-temperature operation.

Q: Why are MAX3223CPW and MAX3223CPWR not suitable substitutes?

A: These parts use 20-TSSOP packaging (0.173", 4.40mm Width) instead of 20-SSOP (0.209", 5.30mm Width). The different package footprint is not compatible with PCBs designed for the ICL3223IAZ. Additionally, both parts are obsolete.

Q: Does packaging type (Tube vs. Cut Tape) affect electrical compatibility?

A: No. Packaging type (Tube, Cut Tape, or Digi-Reel) affects only handling, storage, and supply chain logistics. Electrical performance and pin compatibility remain identical. Select based on manufacturing assembly requirements and inventory management practices.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the ICL3223IAZ. This ensures regulatory compliance across all alternatives.

Q: What is the significance of MSL (Moisture Sensitivity Level) differences?

A: The ICL3223IAZ has MSL 3 (168 Hours), while most substitute parts have MSL 1 (Unlimited). Lower MSL ratings indicate superior moisture resistance and longer shelf life without baking. Parts with MSL 1 provide more flexible storage and handling conditions.

Q: Can I use MAX3223EIDB as a substitute despite its obsolete status?

A: Not recommended for new designs. Although MAX3223EIDB is functionally compatible, its obsolete status creates supply chain risk. Use active alternatives such as MAX3223EIDBR instead to ensure long-term availability.

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