ICL3241CVZ RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The ICL3241CVZ is a 3/5 full-duplex RS232 transceiver manufactured by Renesas Electronics Corporation in 28-TSSOP surface mount packaging. This interface IC operates across 3V to 5.5V supply voltage with a 250 kbps data rate and 300 mV receiver hysteresis. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance. Active alternatives from Analog Devices Inc./Maxim Integrated and STMicroelectronics provide direct functional replacement with improved product status and availability.

Key Parameters

Parameter	ICL3241CVZ Value
Manufacturer	Renesas Electronics Corporation
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	3/5
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	250 kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	28-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the ICL3241CVZ is determined by strict equivalence across the following critical parameters: RS232 protocol compliance, 3/5 driver/receiver configuration, full-duplex operation, 3V to 5.5V supply voltage range, surface mount technology, and compatible package footprint. The substitute parts are grouped into two categories based on package compatibility:

Direct Package Equivalents (28-TSSOP): Parts maintaining the identical 28-TSSOP (0.173", 4.40mm Width) package footprint allow direct PCB substitution without layout modification. These include MAX3241ECUI+, MAX3241ECUI+T, MAX3241CUI+, MAX3241CUI+T, MAX3241EEUI+, MAX3241EEUI+T, MAX3241EUI+, and MAX3241EUI+T from Analog Devices Inc./Maxim Integrated.

Similar Package Variants (28-SSOP): Parts using 28-SSOP (0.209", 5.30mm Width) packaging, including MAX3241CAI+T and ST3241EBPR, require PCB footprint verification due to increased package width but maintain functional equivalence across electrical parameters.

Receiver hysteresis variations (300 mV vs. 500 mV) and data rate differences (235 kbps vs. 250 kbps) do not preclude substitution when the application tolerance permits, as both values satisfy RS232 standard requirements. Operating temperature range extensions (-40°C to 85°C variants) provide enhanced environmental capability without compromising baseline functionality.

Parameter Comparison

Part Number	Manufacturer	Product Status	Package / Case	Receiver Hysteresis	Data Rate	Operating Temperature	Packaging Type	Inventory (Pcs)
ICL3241CVZ	Renesas Electronics	Obsolete	28-TSSOP (0.173", 4.40mm)	300 mV	250 kbps	0°C ~ 70°C	-	815
MAX3241ECUI+	Analog Devices Inc./Maxim	Active	28-TSSOP (0.173", 4.40mm)	500 mV	250 kbps	0°C ~ 70°C	Tube	10038
MAX3241ECUI+T	Analog Devices Inc./Maxim	Active	28-TSSOP (0.173", 4.40mm)	500 mV	250 kbps	0°C ~ 70°C	Tape & Reel (TR)	1045
MAX3241CAI+T	Analog Devices Inc./Maxim	Active	28-SSOP (0.209", 5.30mm)	300 mV	235 kbps	0°C ~ 70°C	Tape & Reel (TR)	4260
MAX3241CUI+	Analog Devices Inc./Maxim	Active	28-TSSOP (0.173", 4.40mm)	300 mV	235 kbps	0°C ~ 70°C	Tube	929
MAX3241CUI+T	Analog Devices Inc./Maxim	Active	28-TSSOP (0.173", 4.40mm)	300 mV	235 kbps	0°C ~ 70°C	Tape & Reel (TR)	1055
MAX3241EEUI+	Analog Devices Inc./Maxim	Active	28-TSSOP (0.173", 4.40mm)	500 mV	250 kbps	-40°C ~ 85°C	Tube	2228
MAX3241EEUI+T	Analog Devices Inc./Maxim	Active	28-TSSOP (0.173", 4.40mm)	500 mV	250 kbps	-40°C ~ 85°C	Tape & Reel (TR)	2000
MAX3241EUI+	Analog Devices Inc./Maxim	Active	28-TSSOP (0.173", 4.40mm)	300 mV	235 kbps	-40°C ~ 85°C	Tube	924
MAX3241EUI+T	Analog Devices Inc./Maxim	Active	28-TSSOP (0.173", 4.40mm)	300 mV	235 kbps	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	3900
ST3241EBPR	STMicroelectronics	Active	28-SSOP (0.209", 5.30mm)	300 mV	250 kbps	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	6553

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the regulatory posture of the ICL3241CVZ. Selection between direct equivalents should prioritize active product status and supply availability. For applications requiring identical operating temperature range (0°C to 70°C), MAX3241ECUI+, MAX3241ECUI+T, MAX3241CUI+, MAX3241CUI+T, and MAX3241CAI+T provide immediate functional replacement with active manufacturing status and established supply chains.

For designs tolerating extended temperature operation, MAX3241EEUI+, MAX3241EEUI+T, MAX3241EUI+, MAX3241EUI+T, and ST3241EBPR extend the operating range to -40°C to 85°C, providing enhanced environmental capability. The MAX3241 series from Analog Devices Inc./Maxim Integrated offers superior inventory depth and multiple packaging options (Tube, Tape & Reel, Cut Tape & Digi-Reel) to support both prototype and production volume requirements.

Package footprint compatibility is critical: 28-TSSOP variants (MAX3241ECUI+, MAX3241ECUI+T, MAX3241CUI+, MAX3241CUI+T, MAX3241EEUI+, MAX3241EEUI+T, MAX3241EUI+, MAX3241EUI+T) provide direct PCB substitution. The 28-SSOP variants (MAX3241CAI+T, ST3241EBPR) require footprint verification due to increased package width (5.30mm vs. 4.40mm).

Frequently Asked Questions (FAQ)

Q: Can MAX3241ECUI+ directly replace ICL3241CVZ on the PCB? A: Yes, MAX3241ECUI+ maintains identical 28-TSSOP (0.173", 4.40mm Width) package footprint and RS232 3/5 transceiver configuration. The 500 mV receiver hysteresis and 250 kbps data rate are within RS232 standard tolerance and do not affect functional compatibility.

Q: What is the difference between MAX3241CUI+T and MAX3241ECUI+T? A: Both parts use 28-TSSOP packaging and maintain 3V to 5.5V supply voltage. MAX3241ECUI+T operates 0°C to 70°C with 500 mV hysteresis and 250 kbps data rate. MAX3241EUI+T extends to -40°C to 85°C with 300 mV hysteresis and 235 kbps data rate. Selection depends on application temperature requirements and data rate tolerance.

Q: Why do some parts have different data rates (235 kbps vs. 250 kbps)? A: Both data rates satisfy RS232 protocol requirements. The 235 kbps and 250 kbps specifications represent different device variants within the MAX3241 family. Applications operating below these rates experience no functional impact from either specification.

Q: Can ST3241EBPR be used instead of MAX3241 variants? A: ST3241EBPR provides functional equivalence with 28-SSOP packaging (0.209", 5.30mm Width), requiring PCB footprint verification. It offers extended temperature range (-40°C to 85°C) and 250 kbps data rate. Use only if PCB layout accommodates the wider 28-SSOP footprint.

Q: What packaging options are available for production volumes? A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel packaging support high-volume production. MAX3241ECUI+T, MAX3241CUI+T, MAX3241EEUI+T, MAX3241EUI+T, and ST3241EBPR offer these options with inventory availability exceeding 1000 units.

Q: Are all substitute parts RoHS3 compliant? A: Yes, all listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the ICL3241CVZ.

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