ICL3232ECV-20T RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The ICL3232ECV-20T is a 2/2 full-duplex RS232 transceiver manufactured by Renesas Electronics Corporation in a 20-TSSOP surface mount package. This component operates across a 3V to 5.5V supply voltage range with a 250kbps data rate and 500mV receiver hysteresis, designed for serial communication interface applications. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	ICL3232ECV-20T
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-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the ICL3232ECV-20T is determined by strict alignment of the following critical parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Package / Case: 20-TSSOP (0.173", 4.40mm Width)
Voltage - Supply: 3V ~ 5.5V
Receiver Hysteresis: 500mV
Data Rate: 250kbps or higher
Operating Temperature: 0°C ~ 70°C or extended range

Substitute parts are grouped into two categories:

Parametric Equivalents match all critical electrical and mechanical parameters with identical or superior performance characteristics and active product status.

Similar Parts maintain functional compatibility within the RS232 2/2 transceiver category but may differ in package configuration, data rate, or hysteresis specifications while remaining electrically compatible.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Receiver Hysteresis	Package	Product Status	RoHS Status
ICL3232ECV-20T	Renesas	RS232	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500mV	20-TSSOP	Obsolete	Non-compliant
ICL3222ECVZ-T	Renesas	RS232	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500mV	20-TSSOP	Active	ROHS3 Compliant
MAX3232ECUP+	Analog Devices/Maxim	RS232	2/2	1Mbps	3V ~ 5.5V	0°C ~ 70°C	500mV	20-TSSOP	Active	ROHS3 Compliant
MAX3232ECUP+T	Analog Devices/Maxim	RS232	2/2	1Mbps	3V ~ 5.5V	0°C ~ 70°C	500mV	20-TSSOP	Active	ROHS3 Compliant
MAX3232EEUP+	Analog Devices/Maxim	RS232	2/2	250kbps	3V ~ 5.5V	-40°C ~ 85°C	500mV	20-TSSOP	Active	ROHS3 Compliant
MAX3232EEUP+T	Analog Devices/Maxim	RS232	2/2	250kbps	3V ~ 5.5V	-40°C ~ 85°C	500mV	20-TSSOP	Active	ROHS3 Compliant
SP3232EHCY-L/TR	MaxLinear	RS232	2/2	460Kbps	3V ~ 5.5V	0°C ~ 70°C	300mV	16-TSSOP	Active	RoHS Compliant
MAX3223CPWR	Texas Instruments	RS232	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500mV	20-TSSOP	Obsolete	ROHS3 Compliant
MAX3223ECUP+T	Analog Devices/Maxim	RS232	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500mV	20-TSSOP	Active	ROHS3 Compliant
MAX3224CUP+T	Analog Devices/Maxim	RS232	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500mV	20-TSSOP	Active	ROHS3 Compliant
MAX3224ECUP+T	Analog Devices/Maxim	RS232	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500mV	20-TSSOP	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: ICL3222ECVZ-T

The ICL3222ECVZ-T from Renesas Electronics is the closest parametric equivalent to the ICL3232ECV-20T. It maintains identical electrical specifications (250kbps data rate, 500mV hysteresis, 3V–5.5V supply, 0°C–70°C operating range) and package configuration (20-TSSOP). The part is currently in active production status with ROHS3 compliance, addressing the obsolescence of the original part while preserving full functional compatibility.

Secondary Recommendations: MAX3232EEUP+ / MAX3232EEUP+T

The MAX3232EEUP+ and MAX3232EEUP+T from Analog Devices/Maxim Integrated provide parametric equivalence with extended operating temperature range (-40°C to 85°C), maintaining the 250kbps data rate and 500mV hysteresis. Both are active products with ROHS3 compliance and available in different packaging formats (Tube and Tape & Reel respectively).

Alternative Consideration: MAX3232ECUP+ / MAX3232ECUP+T

The MAX3232ECUP+ and MAX3232ECUP+T offer superior data rate performance (1Mbps versus 250kbps) while maintaining all other critical parameters. These parts are suitable for applications requiring higher bandwidth within the same supply voltage and package constraints. Both are active products with ROHS3 compliance.

Package Variant: SP3232EHCY-L/TR

The SP3232EHCY-L/TR from MaxLinear operates in a 16-TSSOP package rather than 20-TSSOP, with slightly reduced receiver hysteresis (300mV versus 500mV) and higher data rate (460Kbps). This part is suitable only for designs where the 16-TSSOP footprint is acceptable and the lower hysteresis specification meets application requirements.

Avoid: MAX3223CPWR

The MAX3223CPWR is classified as obsolete, making it unsuitable as a long-term substitute despite parametric equivalence.

Frequently Asked Questions (FAQ)

Q: Can MAX3232ECUP+ replace ICL3232ECV-20T directly?

A: Yes, with consideration for data rate differences. The MAX3232ECUP+ maintains identical supply voltage (3V–5.5V), operating temperature (0°C–70°C), receiver hysteresis (500mV), package (20-TSSOP), and driver/receiver configuration (2/2). The higher data rate (1Mbps versus 250kbps) is backward compatible with applications designed for 250kbps operation.

Q: What is the difference between ICL3222ECVZ-T and MAX3232EEUP+?

A: Both are parametric equivalents with identical data rate (250kbps) and hysteresis (500mV). The ICL3222ECVZ-T maintains the original operating temperature range (0°C–70°C), while MAX3232EEUP+ extends to -40°C–85°C. The ICL3222ECVZ-T is from Renesas (original manufacturer family), while MAX3232EEUP+ is from Analog Devices/Maxim. Selection depends on temperature requirements and supply chain availability.

Q: Why is SP3232EHCY-L/TR listed as a similar part rather than equivalent?

A: The SP3232EHCY-L/TR uses a 16-TSSOP package instead of 20-TSSOP, requiring PCB layout modification. Additionally, the receiver hysteresis is 300mV versus the specified 500mV, which may affect noise immunity in specific applications. These differences require design verification before substitution.

Q: Are all substitute parts RoHS compliant?

A: The ICL3232ECV-20T is RoHS non-compliant. All recommended active substitutes (ICL3222ECVZ-T, MAX3232 series, MAX3223ECUP+T, MAX3224 series) are ROHS3 compliant. The SP3232EHCY-L/TR is RoHS compliant. Compliance status should be verified against your procurement requirements.

Q: What packaging options are available for MAX3232EEUP+?

A: The MAX3232EEUP+ is available in Tube packaging, while MAX3232EEUP+T is supplied in Tape & Reel (TR) format. Selection depends on production volume and assembly line requirements. Both maintain identical electrical specifications.

Q: Can I use MAX3223ECUP+T or MAX3224ECUP+T as substitutes?

A: Yes. Both maintain the critical parameters: RS232 protocol, 2/2 driver/receiver configuration, 250kbps data rate, 500mV hysteresis, 3V–5.5V supply, 0°C–70°C operating range, and 20-TSSOP package. Both are active products with ROHS3 compliance. Selection between these and other alternatives depends on supply chain availability and cost considerations.

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