ICL3222ECA RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The ICL3222ECA is a 2/2 full-duplex RS232 transceiver manufactured by Renesas Electronics Corporation in a 20-SSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The ICL3222ECA operates across a 3V to 5.5V supply range with a 250kbps data rate and 500mV receiver hysteresis, suitable for legacy RS232 communication applications requiring low-speed serial interfaces.

Key Parameters

Parameter	Value
Manufacturer Part Number	ICL3222ECA
Manufacturer	Renesas Electronics Corporation
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
Receiver Hysteresis	500mV
Package / Case	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the ICL3222ECA is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Package / Case: 20-SSOP (0.209", 5.30mm Width)
Mounting Type: Surface Mount
Voltage - Supply: 3V ~ 5.5V

Allowable Variation Parameters:

Data Rate: Substitute parts may exceed 250kbps (higher data rates are backward compatible)
Receiver Hysteresis: Substitute parts may differ (300mV, 400mV acceptable)
Operating Temperature: Substitute parts may exceed 0°C ~ 70°C range (wider ranges acceptable)
Product Status: Active or Last Time Buy preferred over Obsolete
RoHS Compliance: ROHS3 Compliant preferred for new designs

Substitute parts are grouped into three categories: Direct Manufacturer equivalents (same base product line with packaging variations), Parametric Equivalents (same electrical function with enhanced specifications), and Upgrade options (higher performance variants with extended temperature ranges).

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Operating Temperature	Product Status	RoHS Status	Packaging
ICL3222ECA	Renesas	250kbps	500mV	0°C ~ 70°C	Obsolete	RoHS non-compliant	20-SSOP
ICL3222ECAZ	Renesas	250kbps	500mV	0°C ~ 70°C	Active	ROHS3 Compliant	20-SSOP (Tube)
ICL3222ECAZ-T	Renesas	250kbps	500mV	0°C ~ 70°C	Active	ROHS3 Compliant	20-SSOP (Tape & Reel)
ICL3225ECAZ-T	Renesas	250kbps	500mV	0°C ~ 70°C	Active	ROHS3 Compliant	20-SSOP (Cut Tape)
MAX3222ECDB	Texas Instruments	500kbps	300mV	0°C ~ 70°C	Obsolete	ROHS3 Compliant	20-SSOP (Tube)
TRS3222ECDB	Texas Instruments	500kbps	300mV	0°C ~ 70°C	Last Time Buy	ROHS3 Compliant	20-SSOP (Tube)
TRS3222ECDBR	Texas Instruments	500kbps	300mV	0°C ~ 70°C	Obsolete	ROHS3 Compliant	20-SSOP (Cut Tape)
MAX3222EIDB	Texas Instruments	500kbps	300mV	-40°C ~ 85°C	Obsolete	ROHS3 Compliant	20-SSOP (Tube)
MAX3222EIDBR	Texas Instruments	500kbps	300mV	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SSOP (Cut Tape)
TRS3222EIDB	Texas Instruments	500kbps	300mV	-40°C ~ 85°C	Obsolete	ROHS3 Compliant	20-SSOP (Tube)
ADM3222ARSZ	Analog Devices Inc.	460Kbps	400mV	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SSOP (Tube)

Engineering Selection Recommendations

Primary Recommendation - Direct Renesas Equivalent: ICL3222ECAZ or ICL3222ECAZ-T are the preferred direct substitutes. Both maintain identical electrical specifications to the ICL3222ECA while offering Active product status and ROHS3 compliance. Selection between Tube (ECAZ) and Tape & Reel (ECAZ-T) packaging depends on production volume and assembly requirements.

Secondary Recommendation - Enhanced Performance: MAX3222EIDBR (Texas Instruments, Active status) provides higher data rate capability (500kbps vs. 250kbps) and extended operating temperature range (-40°C ~ 85°C). This part is suitable for applications requiring improved thermal performance or higher-speed serial communication while maintaining full RS232 2/2 transceiver functionality.

Alternative - Analog Devices: ADM3222ARSZ (Analog Devices, Active status) offers comparable performance with 460Kbps data rate and extended temperature range. This part provides design flexibility across multiple manufacturer sources while maintaining ROHS3 compliance and active production status.

Avoid: Parts with Obsolete or Last Time Buy status should be selected only when existing inventory constraints or design lock requirements necessitate their use. These include MAX3222ECDB, TRS3222ECDB, TRS3222ECDBR, MAX3222EIDB, and TRS3222EIDB.

Frequently Asked Questions (FAQ)

Q: Can I substitute ICL3222ECA with ICL3222ECAZ? A: Yes. ICL3222ECAZ is a direct equivalent with identical electrical specifications (250kbps, 500mV hysteresis, 3V-5.5V supply). The primary differences are Active product status and ROHS3 compliance. Packaging is 20-SSOP in both cases.

Q: What is the difference between ICL3222ECAZ and ICL3222ECAZ-T? A: Both parts are electrically identical. ICL3222ECAZ is supplied in Tube packaging, while ICL3222ECAZ-T is supplied in Tape & Reel format. Selection depends on assembly process requirements and production volume.

Q: Can I use MAX3222EIDBR as a substitute for ICL3222ECA? A: Yes, with design considerations. MAX3222EIDBR maintains the 2/2 full-duplex RS232 configuration and 20-SSOP package. However, it offers higher data rate (500kbps vs. 250kbps) and extended temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C). Receiver hysteresis differs (300mV vs. 500mV). These differences are acceptable for most applications as they represent performance enhancements.

Q: Why do some substitutes have different data rates? A: Data rate is a performance specification. Substitutes with higher data rates (500kbps, 460Kbps) are backward compatible with applications designed for 250kbps operation. The transceiver will operate correctly at lower speeds.

Q: What does ROHS3 compliance mean? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements. The original ICL3222ECA is RoHS non-compliant. Substitutes with ROHS3 compliance are preferred for new designs and applications subject to environmental regulations.

Q: Is ICL3225ECAZ-T a suitable substitute? A: Yes. ICL3225ECAZ-T maintains all critical parameters (2/2 RS232, 250kbps, 3V-5.5V supply, 20-SSOP package). It differs in base product number (ICL3225 vs. ICL3222) and moisture sensitivity level (MSL 2 vs. MSL 1), but these differences do not affect functional compatibility.

Q: Can I mix different substitute parts in the same design? A: Yes, provided all parts meet the application's electrical and thermal requirements. However, maintaining a single part number per design revision simplifies procurement, inventory management, and production documentation.

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