MAX241ECWI+ Equivalent & Substitute Parts

Part Overview

The MAX241ECWI+ is a full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, configured with 4 drivers and 5 receivers in a 28-SOIC surface mount package. This interface IC operates across the 4.5V to 5.5V supply range and supports data rates up to 120 Kbps with a 500 mV receiver hysteresis specification. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when electrical parameters, package configuration, and operational specifications align within the allowed tolerance ranges for RS232 transceiver applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX241ECWI+
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Interface
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	4/5
Duplex	Full
Package / Case	28-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Data Rate	120 Kbps
Receiver Hysteresis	500 mV
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MAX241ECWI+ are classified based on strict parameter alignment within the following criteria:

Parametric Equivalents maintain identical electrical specifications: 4/5 driver/receiver configuration, full-duplex RS232 protocol, 120 Kbps data rate, 500 mV receiver hysteresis, 4.5V to 5.5V supply voltage, 28-SOIC package, and 0°C to 70°C operating temperature range. These parts differ only in temperature grade designation (C vs. E suffix) or base product number within the MAX series.

Manufacturer Recommended Alternatives (ADM series) provide functional equivalence with modified electrical parameters: receiver hysteresis increases to 650 mV, operating temperature extends to -40°C to 85°C, and supply voltage tolerance narrows to 4.75V to 5.25V (ADM241LARZ only). These parts maintain 4/5 driver/receiver configuration, full-duplex RS232 operation, 120 Kbps data rate, and 28-SOIC packaging.

Limited Compatibility Substitute (MAX214CWI+) differs in driver/receiver count (3/5 instead of 4/5) and data rate (116 Kbps instead of 120 Kbps), suitable only for applications not requiring the fourth driver channel.

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate (Kbps)	Receiver Hysteresis (mV)	Supply Voltage	Operating Temperature	Package	Product Status
MAX241ECWI+	Analog Devices/Maxim	4/5	120	500	4.5V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active
MAX211CWI+	Analog Devices/Maxim	4/5	120	500	4.5V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active
MAX211ECWI+	Analog Devices/Maxim	4/5	120	500	4.5V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active
MAX213CWI+	Analog Devices/Maxim	4/5	120	500	4.5V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active
MAX213ECWI+	Analog Devices/Maxim	4/5	120	500	4.5V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active
MAX214CWI+	Analog Devices/Maxim	3/5	116	500	4.5V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active
MAX241CWI+	Analog Devices/Maxim	4/5	120	500	4.5V ~ 5.5V	0°C ~ 70°C	28-SOIC	Active
ADM211ARZ	Analog Devices	4/5	120	650	4.5V ~ 5.5V	-40°C ~ 85°C	28-SOIC	Active
ADM211EARZ	Analog Devices	4/5	120	650	4.5V ~ 5.5V	-40°C ~ 85°C	28-SOIC	Active
ADM241LARZ	Analog Devices	4/5	120	650	4.75V ~ 5.25V	-40°C ~ 85°C	28-SOIC	Active

Engineering Selection Recommendations

Direct Parametric Equivalents (MAX211CWI+, MAX211ECWI+, MAX213CWI+, MAX213ECWI+, MAX241CWI+) are suitable for applications requiring identical electrical performance and operating conditions. All maintain Active product status with ROHS3 compliance and MSL 1 rating. Selection among these parts depends on inventory availability and temperature grade requirements within the 0°C to 70°C range.

Manufacturer Recommended Alternatives (ADM211ARZ, ADM211EARZ, ADM241LARZ) are suitable for applications requiring extended operating temperature range (-40°C to 85°C) or enhanced receiver hysteresis (650 mV). These parts maintain 4/5 driver/receiver configuration and 120 Kbps data rate. ADM241LARZ operates within a narrower supply voltage window (4.75V to 5.25V) compared to the standard 4.5V to 5.5V range. All ADM series parts maintain Active status with ROHS3 compliance.

Limited Compatibility Substitute (MAX214CWI+) is applicable only in designs where the fourth driver channel is not required and 116 Kbps data rate is acceptable. This part maintains identical package, supply voltage, and temperature specifications but reduces driver count from 4 to 3.

Frequently Asked Questions (FAQ)

Q: Can MAX211ECWI+ directly replace MAX241ECWI+ in existing designs?

A: Yes. Both parts share identical electrical specifications: 4/5 driver/receiver configuration, 120 Kbps data rate, 500 mV receiver hysteresis, 4.5V to 5.5V supply voltage, 0°C to 70°C operating temperature, and 28-SOIC package. The difference lies in the base product number (MAX211 vs. MAX241), which does not affect functional compatibility.

Q: What is the difference between MAX241ECWI+ and ADM241LARZ?

A: Both parts provide 4/5 driver/receiver RS232 transceiver functionality in 28-SOIC packaging at 120 Kbps. Key differences are: ADM241LARZ operates across -40°C to 85°C (vs. 0°C to 70°C), features 650 mV receiver hysteresis (vs. 500 mV), and operates within 4.75V to 5.25V supply range (vs. 4.5V to 5.5V). ADM241LARZ is suitable for extended temperature applications but requires tighter supply voltage control.

Q: Is MAX214CWI+ a suitable substitute for MAX241ECWI+?

A: MAX214CWI+ is a limited compatibility substitute. It maintains identical package, supply voltage, and temperature specifications but provides only 3 drivers instead of 4 and operates at 116 Kbps instead of 120 Kbps. Use only if your application does not require the fourth driver channel and can operate at the reduced data rate.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching the compliance profile of MAX241ECWI+.

Q: What is the significance of receiver hysteresis differences between MAX and ADM series?

A: Receiver hysteresis determines the voltage differential required for input state transitions. MAX series parts specify 500 mV hysteresis, while ADM series parts specify 650 mV. Higher hysteresis provides improved noise immunity in electrically noisy environments but may reduce sensitivity to small signal variations. Selection depends on application noise characteristics and signal amplitude requirements.

Q: Can ADM211ARZ and ADM211EARZ be used interchangeably?

A: Yes. Both parts are functionally identical with the same electrical specifications, package, and operating temperature range. The difference is in temperature grade designation (commercial vs. extended), which does not affect performance within the specified operating range.

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