ICL3225IA-T RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The ICL3225IA-T 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-T 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	Value
Manufacturer Part Number	ICL3225IA-T
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	-40°C ~ 85°C
Receiver Hysteresis	500 mV
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 ICL3225IA-T 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: 250kbps or higher
Receiver Hysteresis: 500mV or lower (more sensitive)
Operating Temperature: -40°C minimum and 85°C or higher maximum
Product Status: Active preferred for long-term availability
RoHS Compliance: ROHS3 compliant preferred for regulatory alignment

Substitute parts are grouped into three categories: Parametric Equivalents (Renesas ICL series with identical electrical specifications), Direct Equivalents (Analog Devices/Maxim MAX series with matching core parameters), and Upgrades (parts with enhanced data rates or temperature ranges).

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Operating Temperature	Product Status	RoHS Status	Packaging
ICL3225IA-T	Renesas	250kbps	500 mV	-40°C ~ 85°C	Obsolete	RoHS non-compliant	Not specified
ICL3222EIAZ-T	Renesas	250kbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Tape & Reel (TR)
ICL3224EIAZ-T	Renesas	250kbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Tape & Reel (TR)
ICL3225EIAZ-T	Renesas	250kbps	500 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
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

Parametric Equivalents (Renesas ICL Series): ICL3222EIAZ-T, ICL3224EIAZ-T, and ICL3225EIAZ-T are active Renesas alternatives with identical electrical specifications to the obsolete ICL3225IA-T. All three are ROHS3 compliant and available in production quantities. ICL3225EIAZ-T provides the closest functional match with the same base product number. These parts are recommended for designs requiring strict parameter matching and Renesas component continuity.

Direct Equivalents (Analog Devices/Maxim MAX Series): MAX3224EAAP+T and MAX3224EAAP+ maintain 250kbps data rate and 500mV receiver hysteresis with extended operating temperature to 125°C. MAX3225EAP+T and MAX3225EAAP+T offer 1Mbps data rate capability while maintaining all other critical parameters. These parts are ROHS3 compliant and widely available. Selection between MAX3224 and MAX3225 variants depends on whether the application requires higher data rate performance.

Upgrade Options: MAX3225 variants (MAX3225EAP+, MAX3225EAP+T, MAX3225EAAP+, MAX3225EAAP+T) provide 1Mbps data rate, representing a performance upgrade from the 250kbps specification of the original part. These are suitable for applications where higher communication speeds are beneficial and backward compatible with existing 250kbps designs.

Compliance Consideration: The original ICL3225IA-T is RoHS non-compliant. All substitute parts listed are ROHS3 compliant, supporting modern regulatory requirements and supply chain standards.

Frequently Asked Questions (FAQ)

Q: Can I directly replace ICL3225IA-T with ICL3225EIAZ-T? A: Yes. ICL3225EIAZ-T is a parametric equivalent with identical electrical specifications (2/2 full-duplex RS232, 250kbps, 500mV hysteresis, 3V-5.5V supply, -40°C to 85°C operating range) in the same 20-SSOP package. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between MAX3224 and MAX3225 series? A: Both maintain 2/2 full-duplex RS232 transceiver functionality in 20-SSOP packages. MAX3224 operates at 250kbps data rate, matching the original ICL3225IA-T specification. MAX3225 operates at 1Mbps, providing higher communication speed capability. Both support 3V-5.5V supply and -40°C to 85°C operating temperature. MAX3224EAAP+ variants extend to 125°C maximum operating temperature.

Q: Are packaging differences between substitute parts significant? A: Packaging format (Tape & Reel, Cut Tape & Digi-Reel, or Tube) affects handling, storage, and automated assembly processes but does not impact electrical or mechanical compatibility. Select packaging based on production volume and assembly equipment requirements. All parts use identical 20-SSOP surface mount package dimensions.

Q: Why does MAX3223EEAP+T show lower data rate and hysteresis? A: MAX3223EEAP+T operates at 120Kbps with 300mV receiver hysteresis, representing a lower-performance variant within the MAX32xx family. This part is included as a substitute option for applications with reduced communication speed requirements but is not recommended as a direct replacement for the 250kbps ICL3225IA-T specification.

Q: Which substitute part offers the best long-term availability? A: ICL3225EIAZ-T (Renesas, active status, 3200 pcs in stock) and MAX3225EAP+T (Analog Devices/Maxim, active status, 3050 pcs in stock) both demonstrate strong inventory levels and active production status, supporting long-term design continuity.

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