MAX241EEAI RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX241EEAI is a full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, configured with 4 drivers and 4 receivers in a 28-SSOP surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement.

The MAX241EEAI operates across a supply voltage range of 4.5V to 5.5V with a maximum data rate of 120 kbps and receiver hysteresis of 500 mV. The device is rated for operating temperatures from -40°C to 85°C and is non-RoHS compliant with unlimited moisture sensitivity (MSL 1).

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX241EEAI
Manufacturer	Analog Devices Inc./Maxim Integrated
Product Category	Interface - RS232 Transceiver
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	4/4
Duplex Mode	Full
Package / Case	28-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Voltage - Supply	4.5V ~ 5.5V
Data Rate	120 kbps
Receiver Hysteresis	500 mV
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX241EEAI is determined by strict equivalence across the following critical parameters:

Protocol: RS232
Number of Drivers/Receivers: 4/4
Duplex Mode: Full
Package / Case: 28-SSOP (0.209", 5.30mm Width)
Mounting Type: Surface Mount
Voltage - Supply: 4.5V ~ 5.5V
Data Rate: 120 kbps
Operating Temperature: -40°C ~ 85°C

Substitute parts are categorized into two groups:

Parametric Equivalents (Full Electrical Match): Parts that match all critical electrical and mechanical parameters, including receiver hysteresis of 500 mV. These parts are direct functional replacements with identical performance characteristics.

Manufacturer Recommended Alternatives (Functional Equivalents with Parameter Variance): Parts that maintain core RS232 transceiver functionality within the same package but may exhibit variations in receiver hysteresis (650 mV vs. 500 mV). These parts are suitable for applications where the hysteresis difference does not impact system performance.

Parameter Comparison

Part Number	Manufacturer	Product Status	Drivers/Receivers	Package	Supply Voltage	Data Rate	Receiver Hysteresis	Operating Temp	RoHS Status
MAX241EEAI	Analog Devices/Maxim	Obsolete	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	500 mV	-40°C ~ 85°C	Non-compliant
MAX211EAI+	Analog Devices/Maxim	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	500 mV	-40°C ~ 85°C	ROHS3 Compliant
MAX211EEAI+	Analog Devices/Maxim	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	500 mV	-40°C ~ 85°C	ROHS3 Compliant
MAX213EAI+	Analog Devices/Maxim	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	500 mV	-40°C ~ 85°C	ROHS3 Compliant
MAX213EEAI+	Analog Devices/Maxim	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	500 mV	-40°C ~ 85°C	ROHS3 Compliant
MAX241EAI+	Analog Devices/Maxim	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	500 mV	-40°C ~ 85°C	ROHS3 Compliant
MAX241EEAI+	Analog Devices/Maxim	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	500 mV	-40°C ~ 85°C	ROHS3 Compliant
ADM211ARSZ	Analog Devices	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	650 mV	-40°C ~ 85°C	ROHS3 Compliant
ADM211ARSZ-REEL	Analog Devices	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	650 mV	-40°C ~ 85°C	ROHS3 Compliant
ADM211EARSZ	Analog Devices	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	650 mV	-40°C ~ 85°C	ROHS3 Compliant
ADM211EARSZ-REEL	Analog Devices	Active	4/4	28-SSOP	4.5V ~ 5.5V	120 kbps	650 mV	-40°C ~ 85°C	ROHS3 Compliant

Engineering Selection Recommendations

Primary Selection (Parametric Equivalents):

MAX241EEAI+ is the direct active equivalent of the obsolete MAX241EEAI. This part maintains identical electrical specifications including 500 mV receiver hysteresis and is ROHS3 compliant. Selection of MAX241EEAI+ eliminates the need for design modification and provides the highest compatibility assurance.

MAX211EAI+, MAX211EEAI+, MAX213EAI+, and MAX213EEAI+ are parametric equivalents from the MAX211 and MAX213 base product families. These parts are active, ROHS3 compliant, and maintain all critical electrical parameters. These options are suitable for direct substitution where inventory or lead time considerations favor alternative part numbers within the same electrical specification class.

Secondary Selection (Manufacturer Recommended with Parameter Variance):

ADM211ARSZ, ADM211ARSZ-REEL, ADM211EARSZ, and ADM211EARSZ-REEL are manufacturer-recommended alternatives from the ADM211 family. These parts differ in receiver hysteresis (650 mV vs. 500 mV). Selection of these parts is appropriate only when system design margins accommodate the increased hysteresis specification. All ADM211 variants are ROHS3 compliant and active products.

Compliance Consideration:

The original MAX241EEAI is RoHS non-compliant. All substitute parts listed are ROHS3 compliant, supporting modern procurement and environmental compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX241EEAI+ be used as a direct replacement for MAX241EEAI?

A: Yes. MAX241EEAI+ is the active equivalent of the obsolete MAX241EEAI with identical electrical specifications (4/4 drivers/receivers, 500 mV receiver hysteresis, 120 kbps data rate, 28-SSOP package). The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between MAX211 and MAX213 variants?

A: Both MAX211 and MAX213 families are parametric equivalents to MAX241EEAI, matching all critical electrical and mechanical parameters. The base product number difference reflects internal design variants within Analog Devices' product portfolio. Selection between these families is determined by availability and procurement preference, as electrical performance is identical.

Q: Why do ADM211 parts have 650 mV receiver hysteresis instead of 500 mV?

A: ADM211 parts are manufacturer-recommended alternatives with a higher receiver hysteresis specification. This parameter difference does not prevent substitution but requires verification that system design margins accommodate the increased hysteresis. Applications with tight noise margins or specific signal integrity requirements should confirm compatibility before selection.

Q: Are all substitute parts available in the same 28-SSOP package?

A: Yes. All substitute parts listed are packaged in 28-SSOP (0.209", 5.30mm Width) surface mount configuration, ensuring mechanical and footprint compatibility with the original MAX241EEAI design.

Q: What is the significance of the "+" suffix in part numbers like MAX241EEAI+?

A: The "+" suffix indicates packaging variants or tape-and-reel configurations. Parts with "+" suffix are typically supplied in tube or tape-and-reel format. Parts with "-REEL" designation explicitly indicate reel packaging. Verify packaging requirements with procurement specifications before final part selection.

Q: Is RoHS compliance a mandatory consideration for MAX241EEAI substitution?

A: RoHS compliance is determined by end-product requirements and regional regulations. The original MAX241EEAI is non-compliant, while all substitute parts are ROHS3 compliant. If RoHS compliance is required for your application, all listed substitutes meet this requirement. If legacy non-compliant parts are acceptable, the original MAX241EEAI remains available in existing inventory.

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