ICL3241ECB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The ICL3241ECB is a full-duplex RS232 transceiver manufactured by Renesas Electronics Corporation, configured with 3 drivers and 5 receivers in a 28-SOIC surface mount package. This device operates across 3V to 5.5V supply voltage with a 250kbps data rate and 500mV receiver hysteresis, designed for industrial and embedded communication applications.

The ICL3241ECB is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production and maintenance requirements for systems utilizing this interface component.

Key Parameters

Parameter	ICL3241ECB Value
Manufacturer	Renesas Electronics Corporation
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	3/5
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	250kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	28-SOIC (0.295", 7.50mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ICL3241ECB is determined by the following critical parameters:

Protocol: RS232 (mandatory match)
Number of Drivers/Receivers: 3/5 (mandatory match)
Duplex: Full (mandatory match)
Package / Case: 28-SOIC (mandatory match)
Voltage - Supply: 3V ~ 5.5V (mandatory match)
Mounting Type: Surface Mount (mandatory match)

Substitute parts are grouped into two categories:

Parametric Equivalents match all critical electrical and mechanical parameters of the ICL3241ECB, including receiver hysteresis (500mV), data rate (250kbps), and operating temperature range (0°C ~ 70°C).

Similar Parts maintain protocol, driver/receiver configuration, package, and supply voltage compatibility but may differ in receiver hysteresis, data rate, or operating temperature range. These parts are functionally compatible for RS232 communication but operate under different electrical specifications.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Receiver Hysteresis	Data Rate	Supply Voltage	Operating Temp	Package	Product Status	RoHS Status
ICL3241ECB	Renesas Electronics	RS232	3/5	500 mV	250kbps	3V ~ 5.5V	0°C ~ 70°C	28-SOIC	Obsolete	RoHS non-compliant
MAX3241ECWI+	Analog Devices Inc./Maxim Integrated	RS232	3/5	500 mV	250kbps	3V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active	ROHS3 Compliant
MAX3244ECWI+	Analog Devices Inc./Maxim Integrated	RS232	3/5	500 mV	250kbps	3V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active	ROHS3 Compliant
MAX3241ECWI+T	Analog Devices Inc./Maxim Integrated	RS232	3/5	500 mV	250kbps	3V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active	ROHS3 Compliant
MAX3241EEWI+	Analog Devices Inc./Maxim Integrated	RS232	3/5	500 mV	250kbps	3V ~ 5.5V	-40°C ~ 85°C	28-SOIC	Active	ROHS3 Compliant
MAX3241EEWI+T	Analog Devices Inc./Maxim Integrated	RS232	3/5	500 mV	250kbps	3V ~ 5.5V	-40°C ~ 85°C	28-SOIC	Active	ROHS3 Compliant
MAX3241EWI+	Analog Devices Inc./Maxim Integrated	RS232	3/5	500 mV	1Mbps	3V ~ 5.5V	-40°C ~ 85°C	28-SOIC	Active	ROHS3 Compliant
MAX3241CWI+	Analog Devices Inc./Maxim Integrated	RS232	3/5	300 mV	235Kbps	3V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalent Selection (Direct Replacement)

MAX3241ECWI+ and MAX3244ECWI+ are parametric equivalents matching all electrical and thermal specifications of the ICL3241ECB. Both are manufactured by Analog Devices Inc./Maxim Integrated and maintain active product status with ROHS3 compliance. These parts are suitable for direct substitution in applications requiring identical operating temperature range (0°C ~ 70°C) and electrical characteristics.

Extended Temperature Range Alternatives

MAX3241EEWI+ and MAX3241EEWI+T extend the operating temperature range to -40°C ~ 85°C while maintaining all other electrical parameters. These parts are appropriate for applications requiring broader thermal operation or long-term reliability in variable environmental conditions.

Higher Data Rate Alternative

MAX3241EWI+ supports 1Mbps data rate compared to the 250kbps specification of the ICL3241ECB, with extended operating temperature range (-40°C ~ 85°C). This part is suitable for applications requiring higher communication bandwidth while maintaining RS232 protocol and 3/5 driver/receiver configuration.

Packaging Considerations

Tube packaging is standard for MAX3241 series parts. Tape & Reel (TR) packaging variants (ECWI+T, EEWI+T) are available for high-volume production environments. The "+T" suffix indicates Tape & Reel packaging; standard variants without this suffix are supplied in Tube packaging.

Compliance Status

All Maxim Integrated substitute parts are ROHS3 compliant and REACH unaffected, addressing regulatory requirements that the obsolete ICL3241ECB does not meet. The ICL3241ECB is RoHS non-compliant and should be replaced in new designs or compliance-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can MAX3241ECWI+ directly replace ICL3241ECB without circuit modification?

A: Yes. MAX3241ECWI+ is a parametric equivalent with identical receiver hysteresis (500mV), data rate (250kbps), operating temperature range (0°C ~ 70°C), supply voltage (3V ~ 5.5V), and 28-SOIC package. No circuit modifications are required for functional compatibility.

Q: What is the difference between MAX3241ECWI+ and MAX3241EEWI+?

A: The primary difference is operating temperature range. MAX3241ECWI+ operates 0°C ~ 70°C, while MAX3241EEWI+ operates -40°C ~ 85°C. All other electrical parameters are identical. Select MAX3241EEWI+ for applications requiring extended thermal operation.

Q: Why does MAX3241CWI+ have different receiver hysteresis (300mV vs 500mV)?

A: MAX3241CWI+ is a similar part with reduced receiver hysteresis (300mV) and slightly lower data rate (235Kbps). This part maintains protocol and package compatibility but operates under different electrical specifications. Use only if your application tolerates these parameter variations.

Q: What does the "+T" suffix indicate in part numbers like MAX3241ECWI+T?

A: The "+T" suffix indicates Tape & Reel (TR) packaging for automated assembly processes. Parts without this suffix are supplied in Tube packaging. Both packaging variants contain identical die and electrical specifications; packaging selection depends on production volume and assembly equipment.

Q: Is MAX3241EWI+ suitable as a replacement if my application requires higher data rates?

A: Yes, if your application can utilize the higher 1Mbps data rate. MAX3241EWI+ maintains all other critical parameters (3/5 drivers/receivers, RS232 protocol, 28-SOIC package, 3V ~ 5.5V supply) and extends operating temperature to -40°C ~ 85°C. Verify that your circuit design and communication protocol support the increased bandwidth.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All Maxim Integrated MAX3241 and MAX3244 series parts listed are ROHS3 compliant. The original ICL3241ECB is RoHS non-compliant. Substitution with any listed Maxim part addresses RoHS compliance requirements for new designs and regulated applications.

Q: Can I use MAX3244ECWI+ instead of MAX3241ECWI+?

A: Yes. MAX3244ECWI+ is a parametric equivalent with identical electrical specifications and operating parameters. Both parts are suitable for direct substitution in the ICL3241ECB application.

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