SP211CT-L/TR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SP211CT-L/TR is a 4/5 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 28-SOIC surface mount package. This component is classified as obsolete, indicating that direct procurement may face supply constraints. Identifying equivalent and substitute parts ensures design continuity and maintains system functionality for applications requiring RS232 serial communication interfaces.

Key Parameters

Parameter	SP211CT-L/TR
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	4/5
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	120 Kbps
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	28-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the SP211CT-L/TR is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

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 Range: 4.5V ~ 5.5V (or compatible subset)

Allowable Variations:

Data Rate: Substitute parts may exceed the 120 Kbps specification
Receiver Hysteresis: Substitute parts may differ (500 mV or 650 mV acceptable)
Operating Temperature: Substitute parts may provide extended ranges
Product Status: Active parts are preferred over obsolete parts
Compliance: RoHS and REACH certifications enhance suitability

Substitute parts are grouped into two categories: direct MaxLinear alternatives and cross-manufacturer equivalents from Analog Devices Inc. and Renesas Electronics Corporation.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Voltage Supply	Operating Temperature	Product Status	RoHS Status
SP211CT-L/TR	MaxLinear, Inc.	RS232	4/5	120 Kbps	500 mV	4.5V ~ 5.5V	0°C ~ 70°C	Obsolete	Not Specified
SP211ECT-L/TR	MaxLinear, Inc.	RS232	4/5	230 Kbps	500 mV	4.5V ~ 5.5V	0°C ~ 70°C	Active	Not Specified
ADM211ARZ	Analog Devices Inc.	RS232	4/5	120 Kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM211ARZ-REEL	Analog Devices Inc.	RS232	4/5	120 Kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM211EARZ	Analog Devices Inc.	RS232	4/5	120 Kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM211EARZ-REEL	Analog Devices Inc.	RS232	4/5	120 Kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM241LARZ	Analog Devices Inc.	RS232	4/5	120 Kbps	650 mV	4.75V ~ 5.25V	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM241LARZ-REEL	Analog Devices Inc.	RS232	4/5	120 Kbps	650 mV	4.75V ~ 5.25V	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM241LJRZ	Analog Devices Inc.	RS232	4/5	120 Kbps	650 mV	4.75V ~ 5.25V	0°C ~ 70°C	Active	ROHS3 Compliant
ADM241LJRZ-REEL	Analog Devices Inc.	RS232	4/5	120 Kbps	650 mV	4.75V ~ 5.25V	0°C ~ 70°C	Active	ROHS3 Compliant
HIN211ECBZ	Renesas Electronics Corporation	RS232	4/5	230 Kbps	500 mV	4.5V ~ 5.5V	0°C ~ 70°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute (MaxLinear Direct Equivalent): SP211ECT-L/TR is the direct MaxLinear successor to the obsolete SP211CT-L/TR. Both parts maintain identical electrical specifications for voltage supply, operating temperature range, and receiver hysteresis. The SP211ECT-L/TR offers enhanced data rate capability (230 Kbps vs. 120 Kbps) and is currently in active production status, ensuring supply availability.

Secondary Substitutes (Analog Devices ADM211 Series): The ADM211ARZ, ADM211ARZ-REEL, ADM211EARZ, and ADM211EARZ-REEL variants provide full functional equivalence with extended operating temperature range (-40°C ~ 85°C). These parts are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1), indicating superior reliability for long-term storage and field deployment. The ADM211 series maintains the 120 Kbps data rate specification.

Tertiary Substitutes (Analog Devices ADM241 Series): The ADM241LARZ, ADM241LARZ-REEL, ADM241LJRZ, and ADM241LJRZ-REEL variants are functionally equivalent with a narrower voltage supply tolerance (4.75V ~ 5.25V). The ADM241LJRZ and ADM241LJRZ-REEL maintain the original 0°C ~ 70°C operating temperature range. These parts are suitable for applications with stable power supply regulation.

Alternative Substitute (Renesas HIN211ECBZ): The HIN211ECBZ from Renesas Electronics Corporation provides full functional equivalence with enhanced data rate (230 Kbps) and ROHS3 compliance. This part maintains the original operating temperature range and receiver hysteresis specification.

Packaging Considerations: Tube packaging is suitable for manual assembly and low-volume production. Tape & Reel (TR) packaging is optimized for automated pick-and-place assembly and high-volume manufacturing.

Frequently Asked Questions (FAQ)

Q: Can SP211ECT-L/TR directly replace SP211CT-L/TR in existing designs? A: Yes. Both parts are MaxLinear RS232 transceivers with identical 28-SOIC packaging, voltage supply range (4.5V ~ 5.5V), and operating temperature (0°C ~ 70°C). The SP211ECT-L/TR offers higher data rate capability (230 Kbps vs. 120 Kbps), which is backward compatible with 120 Kbps applications.

Q: What is the difference between ADM211ARZ and ADM211EARZ? A: Both are Analog Devices RS232 transceivers with identical electrical specifications. The designation difference reflects internal die revision or manufacturing process updates. Both are functionally equivalent for substitution purposes.

Q: Why do some substitutes have narrower voltage supply ranges (4.75V ~ 5.25V)? A: The ADM241 series variants specify a tighter voltage tolerance window. This does not prevent substitution in applications with stable 5V power supplies but may require verification in systems with wider supply voltage variation.

Q: What is the significance of MSL (Moisture Sensitivity Level) ratings? A: MSL 3 (168 Hours) indicates the part requires baking before reflow soldering if exposed to moisture for extended periods. MSL 1 (Unlimited) indicates no moisture sensitivity, providing greater flexibility in storage and handling. Analog Devices parts carry MSL 1 rating.

Q: Are Tape & Reel packaged parts functionally identical to Tube packaged parts? A: Yes. Tape & Reel and Tube packaging contain identical die and electrical specifications. The difference is mechanical presentation for assembly automation. Select based on manufacturing process requirements.

Q: Can ADM241LJRZ substitute for ADM241LARZ? A: Yes, with operating temperature consideration. ADM241LJRZ operates 0°C ~ 70°C (matching the original SP211CT-L/TR), while ADM241LARZ operates -40°C ~ 85°C. Both are electrically equivalent; select based on application temperature requirements.

Q: What does ROHS3 compliance indicate? A: ROHS3 compliance certifies the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. This is a regulatory requirement for many markets and indicates environmental compliance.

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