ICL3241EIB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The ICL3241EIB 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 component operates across a 3V to 5.5V supply range with a data rate of 250kbps and supports operating temperatures from -40°C to 85°C. The ICL3241EIB is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support, maintenance, and new design implementations where this specific part is no longer available from primary sources.

Key Parameters

Parameter	Value
Manufacturer Part Number	ICL3241EIB
Manufacturer	Renesas Electronics Corporation
Category	Interface
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	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	28-SOIC (0.295", 7.50mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the ICL3241EIB is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

Protocol: RS232
Number of Drivers/Receivers: 3/5
Duplex: Full
Package / Case: 28-SOIC (0.295", 7.50mm Width)
Voltage - Supply: 3V ~ 5.5V
Mounting Type: Surface Mount

Allowable Parameter Variations:

Receiver Hysteresis: 300 mV to 500 mV
Data Rate: 235kbps or higher
Operating Temperature: -40°C to 85°C (wider or narrower ranges acceptable)
RoHS Status: Compliant or non-compliant
Packaging Format: Tube or Tape & Reel

Substitute parts are grouped into two categories: Similar Manufacturer Parts (functionally equivalent with minor parameter variations) and Parametric Equivalents (matching all critical electrical specifications).

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temperature	Package	Product Status	RoHS Status	Inventory
ICL3241EIB	Renesas Electronics	3/5	250kbps	500 mV	-40°C ~ 85°C	28-SOIC	Obsolete	RoHS non-compliant	824 Pcs
MAX3241CWI+	Analog Devices Inc./Maxim Integrated	3/5	235Kbps	300 mV	0°C ~ 70°C	28-SOIC	Active	ROHS3 Compliant	947 Pcs
MAX3241ECWI+	Analog Devices Inc./Maxim Integrated	3/5	250kbps	500 mV	0°C ~ 70°C	28-SOIC	Active	ROHS3 Compliant	834 Pcs
MAX3241ECWI+T	Analog Devices Inc./Maxim Integrated	3/5	250kbps	500 mV	0°C ~ 70°C	28-SOIC	Active	ROHS3 Compliant	1060 Pcs
MAX3241EEWI+T	Analog Devices Inc./Maxim Integrated	3/5	250kbps	500 mV	-40°C ~ 85°C	28-SOIC	Active	ROHS3 Compliant	1108 Pcs
MAX3241EWI+	Analog Devices Inc./Maxim Integrated	3/5	1Mbps	500 mV	-40°C ~ 85°C	28-SOIC	Active	ROHS3 Compliant	1002 Pcs
MAX3241EEWI+	Analog Devices Inc./Maxim Integrated	3/5	250kbps	500 mV	-40°C ~ 85°C	28-SOIC	Active	ROHS3 Compliant	2124 Pcs
MAX3243EEWI+	Analog Devices Inc./Maxim Integrated	3/5	250kbps	500 mV	-40°C ~ 85°C	28-SOIC	Active	ROHS3 Compliant	820 Pcs
MAX3243IDW	Texas Instruments	3/5	250kbps	500 mV	-40°C ~ 85°C	28-SOIC	Active	ROHS3 Compliant	708 Pcs
MAX3244EEWI+	Analog Devices Inc./Maxim Integrated	3/5	250kbps	500 mV	-40°C ~ 85°C	28-SOIC	Active	ROHS3 Compliant	1900 Pcs

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement): MAX3241EEWI+ is the optimal parametric equivalent, matching all critical electrical specifications of the ICL3241EIB: 3/5 driver/receiver configuration, 250kbps data rate, 500 mV receiver hysteresis, -40°C to 85°C operating temperature range, and 28-SOIC package. This part is manufactured by Analog Devices Inc./Maxim Integrated with Active product status and ROHS3 compliance. Available in both Tube and Tape & Reel packaging formats with substantial inventory (2124 Pcs for tube version, 1108 Pcs for tape & reel version).

Extended Temperature Range Alternatives: MAX3241EEWI+T (Tape & Reel) and MAX3241EWI+ (Tube) both support the full -40°C to 85°C operating temperature range. MAX3241EWI+ offers enhanced data rate capability at 1Mbps, providing performance headroom beyond the original 250kbps specification.

Narrower Temperature Range Substitutes: MAX3241ECWI+ and MAX3241ECWI+T operate within 0°C to 70°C temperature range. These parts are suitable for applications where the extended low-temperature performance of the ICL3241EIB is not required. Both maintain 250kbps data rate and 500 mV receiver hysteresis specifications.

Limited Compatibility Substitute: MAX3241CWI+ operates at 235Kbps data rate with 300 mV receiver hysteresis and 0°C to 70°C temperature range. This part meets minimum substitution criteria but operates at reduced data rate and hysteresis specifications.

Cross-Manufacturer Options: MAX3243EEWI+ (Analog Devices Inc./Maxim Integrated) and MAX3243IDW (Texas Instruments) provide parametric equivalence with full -40°C to 85°C temperature support and ROHS3 compliance. MAX3244EEWI+ offers an alternative from Analog Devices with identical electrical specifications.

All recommended substitutes are Active products with ROHS3 compliance, addressing the RoHS non-compliance status of the obsolete ICL3241EIB.

Frequently Asked Questions (FAQ)

Q: Can MAX3241CWI+ be used as a direct replacement for ICL3241EIB? A: MAX3241CWI+ meets the core substitution criteria (3/5 transceiver, RS232 protocol, 28-SOIC package, 3V-5.5V supply). However, it operates at 235Kbps data rate versus the original 250kbps, and features 300 mV receiver hysteresis instead of 500 mV. It also supports only 0°C to 70°C operating temperature. Use this part only if your application does not require the extended temperature range or higher data rate performance.

Q: What is the difference between MAX3241ECWI+ and MAX3241ECWI+T? A: Both parts are electrically identical with 250kbps data rate, 500 mV receiver hysteresis, and 0°C to 70°C operating temperature. The primary difference is packaging: MAX3241ECWI+ is supplied in Tube format, while MAX3241ECWI+T is supplied in Tape & Reel (TR) format. Select based on your assembly process requirements and volume needs.

Q: Is MAX3241EEWI+ a true parametric equivalent to ICL3241EIB? A: Yes. MAX3241EEWI+ matches all critical electrical parameters: 3/5 driver/receiver configuration, 250kbps data rate, 500 mV receiver hysteresis, -40°C to 85°C operating temperature, and 28-SOIC package. It is available in both Tube and Tape & Reel packaging and carries ROHS3 compliance certification.

Q: Why should I consider MAX3241EWI+ over MAX3241EEWI+? A: MAX3241EWI+ provides identical temperature range (-40°C to 85°C) and electrical specifications but operates at 1Mbps data rate compared to 250kbps. If your application can benefit from higher data rate capability, MAX3241EWI+ offers performance headroom. Both parts are functionally compatible with ICL3241EIB pin configurations.

Q: Are there cross-manufacturer alternatives available? A: Yes. MAX3243EEWI+ (Analog Devices Inc./Maxim Integrated) and MAX3243IDW (Texas Instruments) both provide parametric equivalence with full -40°C to 85°C temperature support. These parts maintain identical electrical specifications and 28-SOIC packaging. Cross-manufacturer selection may be driven by supply availability or procurement preferences.

Q: What is the inventory status for recommended substitutes? A: MAX3241EEWI+ (Tube) has 2124 Pcs in stock, and MAX3241EEWI+T (Tape & Reel) has 1108 Pcs available. MAX3244EEWI+ offers 1900 Pcs inventory. All recommended parametric equivalents maintain substantial stock levels suitable for production requirements.

Q: Does the packaging format affect electrical performance? A: No. Tube and Tape & Reel packaging formats contain identical components. Packaging selection is determined by assembly process requirements, volume quantities, and handling procedures. Electrical performance and specifications remain unchanged between packaging formats.

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