ICL3222EIB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The ICL3222EIB is a 2/2 full-duplex RS232 transceiver manufactured by Renesas Electronics Corporation in an 18-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The ICL3222EIB 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 full transceiver functionality.

Key Parameters

Parameter	ICL3222EIB Value
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	250kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	18-SOIC (0.295", 7.50mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the ICL3222EIB is determined by strict adherence to the following parameters: RS232 protocol, 2/2 driver/receiver configuration, full-duplex operation, 18-SOIC package format, surface mount technology, and compatible operating temperature range (-40°C to 85°C). The supply voltage range (3V to 5.5V) and receiver hysteresis (500mV) are critical electrical parameters for direct equivalence. Parts meeting these core criteria are classified as parametric equivalents or direct substitutes. Parts with variations in receiver hysteresis (400mV), data rate, or supply voltage range are classified as similar substitutes and require design verification for specific applications.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Receiver Hysteresis	Data Rate	Supply Voltage	Operating Temp	Package	Product Status	RoHS Status
ICL3222EIB	Renesas Electronics	RS232	2/2	500 mV	250kbps	3V ~ 5.5V	-40°C ~ 85°C	18-SOIC	Obsolete	RoHS non-compliant
ICL3222EIBZ	Renesas Electronics	RS232	2/2	500 mV	250kbps	3V ~ 5.5V	-40°C ~ 85°C	18-SOIC	Obsolete	ROHS3 Compliant
LTC1384ISW#PBF	Analog Devices Inc.	RS232	2/2	400 mV	120KBd	4.5V ~ 5V	-40°C ~ 85°C	18-SOIC	Active	ROHS3 Compliant
LTC1384ISW#TRPBF	Analog Devices Inc.	RS232	2/2	400 mV	120KBd	4.5V ~ 5V	-40°C ~ 85°C	18-SOIC	Active	ROHS3 Compliant
MAX3222EEWN+	Analog Devices Inc./Maxim Integrated	RS232	2/2	500 mV	1Mbps	3V ~ 5.5V	-40°C ~ 85°C	18-SOIC	Active	ROHS3 Compliant
MAX3222EEWN+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	500 mV	1Mbps	3V ~ 5.5V	-40°C ~ 85°C	18-SOIC	Active	ROHS3 Compliant
ADM3222ARWZ	Analog Devices Inc.	RS232	2/2	400 mV	460Kbps	3V ~ 5.5V	-40°C ~ 85°C	18-SOIC	Active	ROHS3 Compliant
ADM3222ARWZ-REEL	Analog Devices Inc.	RS232	2/2	400 mV	460Kbps	3V ~ 5.5V	-40°C ~ 85°C	18-SOIC	Active	ROHS3 Compliant
ADM3222ARWZ-REEL7	Analog Devices Inc.	RS232	2/2	400 mV	460Kbps	3V ~ 5.5V	-40°C ~ 85°C	18-SOIC	Active	ROHS3 Compliant
MAX222CWN+	Analog Devices Inc./Maxim Integrated	RS232	2/2	500 mV	250kbps	4.5V ~ 5.5V	0°C ~ 70°C	18-SOIC	Active	ROHS3 Compliant
MAX222CWN+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	500 mV	250kbps	4.5V ~ 5.5V	0°C ~ 70°C	18-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalent (Highest Compatibility): ICL3222EIBZ is the direct parametric equivalent, maintaining identical electrical specifications (500mV hysteresis, 250kbps data rate, 3V-5.5V supply) and package format. This part achieves ROHS3 compliance while preserving obsolete product status classification.

Direct Substitutes (Active Status, Full Parameter Match): MAX3222EEWN+ and MAX3222EEWN+T provide full electrical parameter equivalence with 500mV receiver hysteresis and 3V-5.5V supply voltage range. Both parts are active products with ROHS3 compliance. The MAX3222 series offers enhanced data rate capability (1Mbps) while maintaining backward compatibility with ICL3222EIB applications.

Similar Substitutes (Parameter Variations Requiring Design Review): LTC1384ISW#PBF and LTC1384ISW#TRPBF feature reduced receiver hysteresis (400mV) and narrower supply voltage range (4.5V-5V), with lower data rate (120KBd). These parts are suitable for applications operating within the 4.5V-5V window.

ADM3222ARWZ, ADM3222ARWZ-REEL, and ADM3222ARWZ-REEL7 maintain 3V-5.5V supply compatibility but feature 400mV receiver hysteresis and 460Kbps data rate. These parts support the full supply voltage range of the original part.

MAX222CWN+ and MAX222CWN+T operate within a narrower temperature range (0°C-70°C) and supply voltage range (4.5V-5.5V), with matching 250kbps data rate and 500mV hysteresis. These parts are suitable for commercial temperature applications with 4.5V minimum supply.

All substitute parts maintain 18-SOIC package compatibility and 2/2 full-duplex RS232 transceiver functionality. All active substitutes carry ROHS3 compliance certification.

Frequently Asked Questions (FAQ)

Q: Can ICL3222EIBZ directly replace ICL3222EIB? A: Yes. ICL3222EIBZ is a parametric equivalent with identical electrical specifications (500mV hysteresis, 250kbps data rate, 3V-5.5V supply voltage, -40°C to 85°C operating range) and 18-SOIC package format. The primary difference is ROHS3 compliance status.

Q: What is the key difference between MAX3222EEWN+ and the original ICL3222EIB? A: MAX3222EEWN+ maintains all critical electrical parameters (500mV hysteresis, 3V-5.5V supply, -40°C to 85°C operating range, 18-SOIC package) but offers higher data rate capability (1Mbps versus 250kbps). This enhanced performance is backward compatible with ICL3222EIB applications.

Q: Why do LTC1384ISW variants have different supply voltage specifications? A: LTC1384ISW#PBF and LTC1384ISW#TRPBF operate within a 4.5V-5.5V supply range, narrower than the ICL3222EIB's 3V-5.5V range. These parts are suitable only for applications with minimum 4.5V supply voltage. Additionally, receiver hysteresis is reduced to 400mV.

Q: Are ADM3222ARWZ variants suitable for 3V operation? A: Yes. ADM3222ARWZ, ADM3222ARWZ-REEL, and ADM3222ARWZ-REEL7 all support the full 3V-5.5V supply voltage range. However, receiver hysteresis is 400mV (versus 500mV in the original), and data rate is 460Kbps.

Q: What packaging options are available for substitute parts? A: Substitute parts are available in Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel packaging formats. All maintain the 18-SOIC surface mount package footprint compatible with ICL3222EIB PCB layouts.

Q: Do all substitute parts meet RoHS compliance requirements? A: All active substitute parts listed carry ROHS3 compliance certification. The original ICL3222EIB is RoHS non-compliant. ICL3222EIBZ achieves ROHS3 compliance while maintaining parametric equivalence.

Q: What is the operating temperature limitation for MAX222CWN+ variants? A: MAX222CWN+ and MAX222CWN+T operate within a 0°C-70°C commercial temperature range, narrower than the ICL3222EIB's -40°C-85°C industrial range. These parts are unsuitable for applications requiring extended low-temperature operation below 0°C.

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