SP3226EEA-L/TR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SP3226EEA-L/TR is a full-duplex RS232 transceiver manufactured by MaxLinear, Inc., configured as a 1/1 driver/receiver in a 16-SSOP surface mount package. This component operates across a 3V to 5.5V supply range with a 250 kbps data rate and is rated for -40°C to 85°C operating temperatures. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional and electrical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value
Part Number	SP3226EEA-L/TR
Manufacturer	MaxLinear, Inc.
Product Status	Obsolete
Type	Transceiver
Protocol	RS232
Configuration	1/1 (1 Driver / 1 Receiver)
Duplex Mode	Full
Receiver Hysteresis	500 mV
Data Rate	250 kbps
Supply Voltage	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	16-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level	2 (1 Year)

Substitute Part Grouping Explanation

Substitution eligibility for the SP3226EEA-L/TR is determined by the following critical parameters:

Mandatory Compatibility Criteria:

RS232 protocol compliance
1/1 driver/receiver configuration
Full-duplex operation
500 mV receiver hysteresis
250 kbps data rate
16-SSOP package footprint
Surface mount technology

Voltage Supply Compatibility: Substitutes must support the 3V to 5.5V supply range of the original part. Parts with narrower ranges (such as 4.5V to 5.5V) are acceptable only when the application operates within that narrower window.

Temperature Range Considerations: The original part operates from -40°C to 85°C. Substitutes with extended temperature ranges (-40°C to 125°C) provide enhanced capability and are fully compatible. Substitutes with narrower ranges (0°C to 70°C) are compatible only for applications within those limits.

Active Product Status Priority: All identified substitutes maintain active product status with major semiconductor manufacturers, ensuring long-term availability and supply chain reliability compared to the obsolete original part.

Parameter Comparison

Part Number	Manufacturer	Product Status	Supply Voltage	Operating Temperature	Packaging	RoHS Status	MSL Rating
SP3226EEA-L/TR	MaxLinear, Inc.	Obsolete	3V ~ 5.5V	-40°C ~ 85°C	16-SSOP	Not specified	2 (1 Year)
ICL3226EIAZ	Renesas Electronics Corporation	Active	3V ~ 5.5V	-40°C ~ 85°C	16-SSOP	ROHS3 Compliant	2 (1 Year)
ICL3226IAZ	Intersil	Active	3V ~ 5.5V	-40°C ~ 85°C	16-SSOP	Not specified	Not specified
MAX221ECAE+	Analog Devices Inc./Maxim Integrated	Active	4.5V ~ 5.5V	-40°C ~ 85°C	16-SSOP	ROHS3 Compliant	1 (Unlimited)
MAX221ECAE+T	Analog Devices Inc./Maxim Integrated	Active	4.5V ~ 5.5V	-40°C ~ 85°C	16-SSOP	ROHS3 Compliant	1 (Unlimited)
MAX221EEAE+	Analog Devices Inc./Maxim Integrated	Active	4.5V ~ 5.5V	-40°C ~ 85°C	16-SSOP	ROHS3 Compliant	1 (Unlimited)
MAX221EEAE+T	Analog Devices Inc./Maxim Integrated	Active	4.5V ~ 5.5V	-40°C ~ 85°C	16-SSOP	ROHS3 Compliant	1 (Unlimited)
MAX3226EAAE+	Analog Devices Inc./Maxim Integrated	Active	3V ~ 5.5V	-40°C ~ 125°C	16-SSOP	ROHS3 Compliant	1 (Unlimited)
MAX3226EAAE+T	Analog Devices Inc./Maxim Integrated	Active	3V ~ 5.5V	-40°C ~ 125°C	16-SSOP	ROHS3 Compliant	1 (Unlimited)
MAX3226ECAE+	Analog Devices Inc./Maxim Integrated	Active	3V ~ 5.5V	0°C ~ 70°C	16-SSOP	ROHS3 Compliant	1 (Unlimited)
MAX3226ECAE+T	Analog Devices Inc./Maxim Integrated	Active	3V ~ 5.5V	0°C ~ 70°C	16-SSOP	ROHS3 Compliant	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Full Compatibility):

ICL3226EIAZ (Renesas Electronics Corporation) and ICL3226IAZ (Intersil) are direct functional equivalents. Both maintain identical electrical specifications including 3V to 5.5V supply range, -40°C to 85°C operating temperature, and 16-SSOP packaging. ICL3226EIAZ carries ROHS3 compliance certification and MSL 2 rating matching the original part's environmental specifications.

Extended Temperature Range Alternatives:

MAX3226EAAE+ and MAX3226EAAE+T (Analog Devices Inc./Maxim Integrated) provide enhanced operating temperature capability (-40°C to 125°C) while maintaining the full 3V to 5.5V supply range. These parts are suitable for applications requiring extended temperature performance. Both variants are ROHS3 compliant with MSL 1 (Unlimited) ratings, indicating superior moisture handling.

Restricted Supply Voltage Substitutes:

MAX221ECAE+, MAX221ECAE+T, MAX221EEAE+, and MAX221EEAE+T (Analog Devices Inc./Maxim Integrated) operate within a narrower 4.5V to 5.5V supply range. These parts are applicable only to applications that do not require operation below 4.5V. All variants carry ROHS3 compliance and MSL 1 (Unlimited) ratings.

Temperature-Limited Substitutes:

MAX3226ECAE+ and MAX3226ECAE+T (Analog Devices Inc./Maxim Integrated) operate within a 0°C to 70°C temperature range, narrower than the original part's -40°C to 85°C specification. These parts are suitable only for applications operating within this restricted temperature window.

Packaging Variants:

Tube, Bulk, Cut Tape (CT) & Digi-Reel®, and Tape & Reel (TR) packaging options are available across the substitute parts. Selection depends on procurement volume and assembly process requirements. Electrical and functional specifications remain identical across packaging variants of the same base part number.

Frequently Asked Questions (FAQ)

Q: Can MAX221ECAE+ replace SP3226EEA-L/TR in all applications?

A: MAX221ECAE+ is functionally compatible only in applications where the supply voltage remains between 4.5V and 5.5V. If your design requires operation below 4.5V, this substitute is not suitable. For applications operating across the full 3V to 5.5V range, select ICL3226EIAZ, ICL3226IAZ, or MAX3226 series parts instead.

Q: What is the difference between MAX3226EAAE+ and MAX3226ECAE+?

A: Both parts share identical electrical specifications and 3V to 5.5V supply range. The primary difference is operating temperature: MAX3226EAAE+ operates from -40°C to 125°C, while MAX3226ECAE+ operates from 0°C to 70°C. Select MAX3226EAAE+ for extended temperature applications; select MAX3226ECAE+ only if your application operates within the 0°C to 70°C window.

Q: Are the packaging variants (Tube, Tape & Reel, Cut Tape) electrically equivalent?

A: Yes. Packaging variants of the same base part number (such as MAX3226EAAE+ in Tube versus MAX3226EAAE+T in Tape & Reel) are electrically and functionally identical. Packaging selection is determined by procurement volume, assembly equipment compatibility, and supply chain logistics, not by electrical performance.

Q: Does the MSL rating affect component selection?

A: MSL (Moisture Sensitivity Level) rating affects handling, storage, and assembly procedures. The original SP3226EEA-L/TR carries MSL 2 (1 Year), requiring controlled storage conditions. Most active substitutes carry MSL 1 (Unlimited), indicating superior moisture resistance and less stringent storage requirements. This is an advantage for long-term inventory management and reduces risk of moisture-related failures during assembly.

Q: Why is ICL3226EIAZ recommended as a primary substitute?

A: ICL3226EIAZ (Renesas Electronics Corporation) maintains complete electrical and thermal compatibility with SP3226EEA-L/TR, including 3V to 5.5V supply range, -40°C to 85°C operating temperature, and identical 16-SSOP packaging. It carries active product status with ROHS3 compliance and MSL 2 rating, ensuring long-term availability and regulatory compliance.

Q: Can I use MAX3226ECAE+ in a design requiring -40°C operation?

A: No. MAX3226ECAE+ operates from 0°C to 70°C and is not rated for -40°C operation. For applications requiring -40°C minimum temperature, select ICL3226EIAZ, ICL3226IAZ, MAX221 series, or MAX3226EAAE+ variants instead.

Q: What inventory levels are available for these substitutes?

A: Current inventory includes ICL3226EIAZ (2400 pcs), ICL3226IAZ (4278 pcs), MAX221ECAE+ (3400 pcs), MAX221ECAE+T (1900 pcs), MAX221EEAE+ (3100 pcs), MAX221EEAE+T (1687 pcs), MAX3226EAAE+ (1555 pcs), MAX3226EAAE+T (3034 pcs), MAX3226ECAE+ (3414 pcs), and MAX3226ECAE+T (4900 pcs). Inventory levels support both prototype and production-volume requirements.

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