ICL3225IA RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The ICL3225IA 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 ICL3225IA 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	ICL3225IA Specification
Manufacturer	Renesas Electronics Corporation
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	20-SSOP (0.209", 5.30mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the ICL3225IA is determined by strict equivalence across the following critical 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
Operating Temperature Range: Minimum -40°C, Maximum ≥85°C

Substitute parts are grouped into three categories based on their relationship to the main part:

Parametric Equivalents maintain identical electrical specifications (250kbps data rate, 500mV receiver hysteresis) and are manufactured by Renesas Electronics Corporation with active product status and improved RoHS compliance.

Direct Equivalents are manufactured by Analog Devices Inc./Maxim Integrated and meet all core functional requirements with variations in data rate (120kbps to 1Mbps) and receiver hysteresis (300mV to 500mV), all within acceptable operating parameters.

Upgrade and Similar Parts offer enhanced performance characteristics such as extended operating temperature ranges (-40°C to 125°C) or higher data rates (1Mbps), providing design flexibility for applications requiring improved specifications.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Operating Temperature	Product Status	RoHS Status	Packaging
ICL3225IA	Renesas	250kbps	500 mV	-40°C ~ 85°C	Obsolete	RoHS non-compliant	Not specified
ICL3222EIAZ	Renesas	250kbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
ICL3224EIAZ	Renesas	250kbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
ICL3225EIAZ	Renesas	250kbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
MAX3223EEAP+T	Analog Devices/Maxim	120kbps	300 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel
MAX3224EAAP+T	Analog Devices/Maxim	250kbps	500 mV	-40°C ~ 125°C	Active	ROHS3 Compliant	Tape & Reel (TR)
MAX3225EAP+	Analog Devices/Maxim	1Mbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
MAX3225EAP+T	Analog Devices/Maxim	1Mbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel
MAX3225EAAP+	Analog Devices/Maxim	1Mbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
MAX3225EAAP+T	Analog Devices/Maxim	1Mbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Tape & Reel (TR)
MAX3224EAAP+	Analog Devices/Maxim	250kbps	500 mV	-40°C ~ 125°C	Active	ROHS3 Compliant	Tube

Engineering Selection Recommendations

For direct replacement of the obsolete ICL3225IA, the Renesas ICL3225EIAZ provides identical electrical specifications with active product status and ROHS3 compliance. This part maintains 250kbps data rate, 500mV receiver hysteresis, and -40°C to 85°C operating range while offering improved regulatory compliance and supply chain availability.

The Renesas ICL3222EIAZ and ICL3224EIAZ are parametric equivalents with identical core specifications and active status, suitable for applications where the specific base product number is not a design constraint.

For applications requiring enhanced performance, the Analog Devices MAX3225 series (MAX3225EAP+, MAX3225EAP+T, MAX3225EAAP+, MAX3225EAAP+T) offers 1Mbps data rate while maintaining all other critical parameters. These parts are available in multiple packaging formats and provide superior data rate capability for high-speed RS232 communication.

The MAX3224EAAP+ and MAX3224EAAP+T variants extend the operating temperature range to -40°C to 125°C, supporting applications requiring wider thermal operating windows.

All recommended substitutes maintain the 20-SSOP package footprint, 3V to 5.5V supply voltage range, and full-duplex 2/2 transceiver configuration, ensuring PCB-level compatibility with the original ICL3225IA design.

Frequently Asked Questions (FAQ)

Q: Can ICL3225EIAZ directly replace ICL3225IA in existing designs?

A: Yes. The ICL3225EIAZ maintains identical electrical specifications (250kbps data rate, 500mV receiver hysteresis, -40°C to 85°C operating range) and 20-SSOP package footprint. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between ICL3222EIAZ, ICL3224EIAZ, and ICL3225EIAZ?

A: All three parts are Renesas RS232 2/2 full-duplex transceivers in 20-SSOP packages with identical electrical specifications. The base product numbers (3222, 3224, 3225) indicate different internal configurations, but all meet the core functional requirements for ICL3225IA substitution.

Q: Can MAX3225 series parts replace ICL3225IA?

A: Yes. MAX3225 series parts (MAX3225EAP+, MAX3225EAAP+, and tape & reel variants) are functionally compatible. They maintain the 20-SSOP package, 3V to 5.5V supply range, and -40°C to 85°C operating temperature. The primary advantage is 1Mbps data rate versus 250kbps, providing higher-speed capability for applications that can utilize it.

Q: What packaging options are available for substitutes?

A: Renesas substitutes are supplied in Tube packaging. Analog Devices MAX3225 series parts are available in Tube, Cut Tape (CT) & Digi-Reel, and Tape & Reel (TR) formats. MAX3224 variants are available in Tube and Tape & Reel formats. Select packaging based on production volume and assembly requirements.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitute parts are ROHS3 compliant. The original ICL3225IA is RoHS non-compliant. Substitution with any recommended part improves regulatory compliance for new designs or production runs.

Q: Which substitute offers the widest operating temperature range?

A: MAX3224EAAP+ and MAX3224EAAP+T extend the operating temperature range to -40°C to 125°C, compared to -40°C to 85°C for the ICL3225IA and most other substitutes. Select these parts for applications requiring extended thermal operating windows.

Q: What is the difference between MAX3225EAP+ and MAX3225EAAP+?

A: Both parts are functionally equivalent with 1Mbps data rate and identical electrical specifications. The difference is packaging format: MAX3225EAP+ is supplied in Tube, while MAX3225EAAP+ is also supplied in Tube. Tape & Reel variants (MAX3225EAP+T and MAX3225EAAP+T) are available for high-volume production.

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