SP3226ECY-L Equivalent & Substitute Parts

Part Overview

The SP3226ECY-L is a full-duplex RS232 transceiver interface IC manufactured by MaxLinear, Inc., housed in a 16-TSSOP surface mount package. This component operates across a 3V to 5.5V supply range with a 250kbps data rate and 500mV receiver hysteresis. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	SP3226ECY-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Drivers/Receivers	1/1
Duplex	Full
Data Rate	250kbps
Voltage Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Receiver Hysteresis	500mV
Package/Case	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the SP3226ECY-L is determined by the following critical parameters:

Protocol: RS232 full-duplex transceiver
Package: 16-TSSOP form factor with identical 0.173" width and 4.40mm dimensions
Drivers/Receivers: 1/1 configuration
Receiver Hysteresis: 500mV
Data Rate: 250kbps minimum
Voltage Supply Range: Must encompass or be compatible with 3V ~ 5.5V operation
Mounting Type: Surface mount

Substitute parts are categorized into two groups:

Group 1: Manufacturer Recommended Substitutes (Analog Devices Inc./Maxim Integrated) These parts share identical electrical specifications with the SP3226ECY-L and are direct functional replacements. All are active products with ROHS3 compliance and unlimited moisture sensitivity rating.

Group 2: Parametric Equivalents These parts meet the core functional requirements but may have extended operating temperature ranges or higher data rate capabilities. Parametric equivalents include offerings from Renesas Electronics Corporation and Texas Instruments.

Parameter Comparison

Part Number	Manufacturer	Protocol	Data Rate	Voltage Supply	Operating Temp	Package	Product Status	MSL
SP3226ECY-L	MaxLinear, Inc.	RS232	250kbps	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	Obsolete	1
MAX221ECUE+	Analog Devices/Maxim	RS232	250kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	1
MAX221ECUE+T	Analog Devices/Maxim	RS232	250kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	1
MAX221EEUE+	Analog Devices/Maxim	RS232	250kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	1
MAX221EEUE+T	Analog Devices/Maxim	RS232	250kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	1
MAX3226EEUE+	Analog Devices/Maxim	RS232	250kbps	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	1
MAX3227ECUE+	Analog Devices/Maxim	RS232	1Mbps	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	Active	1
MAX3227ECUE+T	Analog Devices/Maxim	RS232	1Mbps	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	Active	1
MAX3227EEUE+	Analog Devices/Maxim	RS232	1Mbps	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	Active	1
ICL3221ECVZ	Renesas Electronics	RS232	250kbps	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	Active	3
MAX3221CPW	Texas Instruments	RS232	250kbps	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	Obsolete	1

Engineering Selection Recommendations

For applications requiring direct replacement of the SP3226ECY-L with minimal design modification, the MAX3226EEUE+ offers the closest match: identical voltage supply range (3V ~ 5.5V), same 250kbps data rate, 16-TSSOP package, and active product status with ROHS3 compliance and unlimited MSL rating. This part extends the operating temperature range to -40°C ~ 85°C, providing enhanced thermal performance.

The MAX3227 series (MAX3227ECUE+, MAX3227ECUE+T, MAX3227EEUE+) provides higher data rate capability at 1Mbps while maintaining the 3V ~ 5.5V supply range and 16-TSSOP package. These are suitable for applications where increased bandwidth is beneficial or required.

The MAX221 series (MAX221ECUE+, MAX221ECUE+T, MAX221EEUE+, MAX221EEUE+T) operates at a narrower supply range (4.5V ~ 5.5V) but delivers extended temperature performance (-40°C ~ 85°C) and active product status. These are appropriate for systems with stable 5V supplies and demanding thermal environments.

The ICL3221ECVZ from Renesas Electronics provides parametric equivalence with matching voltage supply and operating temperature ranges but carries a higher moisture sensitivity level (MSL 3, 168 hours) compared to the SP3226ECY-L (MSL 1, unlimited).

The MAX3221CPW from Texas Instruments matches the SP3226ECY-L specifications but is classified as obsolete, limiting its suitability for new designs despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can MAX221 series parts directly replace the SP3226ECY-L in existing designs? A: MAX221 parts are electrically compatible but operate at a narrower supply voltage range (4.5V ~ 5.5V) versus the SP3226ECY-L (3V ~ 5.5V). Direct substitution is possible only if your system supply voltage remains above 4.5V. The 16-TSSOP package and 1/1 transceiver configuration are identical.

Q: What is the difference between MAX3227ECUE+ and MAX3227EEUE+? A: Both parts are MAX3227 base products in 16-TSSOP packages with 1Mbps data rate and 3V ~ 5.5V supply range. The primary difference is operating temperature: MAX3227ECUE+ operates 0°C ~ 70°C, while MAX3227EEUE+ extends to -40°C ~ 85°C. Packaging differs (Tube vs. Tube), and inventory levels vary.

Q: Is the ICL3221ECVZ from Renesas a suitable alternative? A: The ICL3221ECVZ meets core functional requirements with matching voltage supply (3V ~ 5.5V), data rate (250kbps), and package (16-TSSOP). However, its moisture sensitivity level is MSL 3 (168 hours) compared to the SP3226ECY-L's MSL 1 (unlimited), requiring stricter handling and storage protocols during manufacturing.

Q: Why do some substitutes have higher data rates (1Mbps vs. 250kbps)? A: The MAX3227 series offers enhanced bandwidth capability while maintaining backward compatibility with lower-speed applications. Systems designed for 250kbps operation function correctly with 1Mbps-capable parts; the higher rating provides design margin and future scalability.

Q: What packaging options are available for active substitutes? A: Analog Devices/Maxim substitutes are available in Tube, Cut Tape (CT) & Digi-Reel, and Tape & Reel (TR) packaging. Selection depends on procurement volume and assembly line requirements. All maintain the identical 16-TSSOP form factor.

Q: Are all recommended substitutes ROHS3 compliant? A: All Analog Devices/Maxim substitutes (MAX221 and MAX3227 series) and the Renesas ICL3221ECVZ carry ROHS3 compliance certification. The Texas Instruments MAX3221CPW also meets ROHS3 standards but is obsolete.

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