SP3224EEY-L RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SP3224EEY-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 20-TSSOP surface mount package. This device is designed for serial communication applications requiring dual drivers and dual receivers with RS232 protocol support. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain electrical compatibility across supply voltage, data rate, operating temperature, and mechanical packaging specifications.

Key Parameters

Parameter	SP3224EEY-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	250 kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	20-TSSOP (0.173", 4.40mm Width)
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution eligibility for the SP3224EEY-L is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Receiver Hysteresis: 500 mV
Voltage - Supply: 3V ~ 5.5V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Package / Case: 20-TSSOP (0.173", 4.40mm Width)

Allowable Variation Parameters:

Data Rate: Equal to or greater than 250 kbps
RoHS Status: RoHS3 Compliant or RoHS Compliant
Moisture Sensitivity Level (MSL): 1 or 3
Product Status: Active or Obsolete (with inventory availability)

Substitute parts are grouped into two categories: MFR Recommended (manufacturer-endorsed alternatives with active product status) and Parametric Equivalents (parts meeting all electrical and mechanical specifications with varying product status or packaging).

Parameter Comparison

Part Number	Manufacturer	Data Rate	Voltage - Supply	Operating Temperature	Package / Case	RoHS Status	MSL	Product Status	Packaging Type
SP3224EEY-L	MaxLinear, Inc.	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	RoHS Compliant	1	Discontinued	-
MAX13234EEUP+T	Analog Devices Inc./Maxim Integrated	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	1	Active	Cut Tape (CT) & Digi-Reel®
MAX13235EEUP+	Analog Devices Inc./Maxim Integrated	3 Mbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	1	Active	Tube
MAX13235EEUP+T	Analog Devices Inc./Maxim Integrated	3 Mbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	1	Active	Cut Tape (CT) & Digi-Reel®
MAX3225EUP/V+	Analog Devices Inc./Maxim Integrated	1 Mbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	1	Active	Tube
ICL3222EIVZ	Renesas Electronics Corporation	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	3	Active	Tube
ICL3223EIVZ	Renesas Electronics Corporation	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	3	Active	Tube
MAX13223EEUP+	Analog Devices Inc./Maxim Integrated	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	1	Active	Tube
MAX13234EAUP+	Analog Devices Inc./Maxim Integrated	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	1	Active	-
MAX13234EEUP+	Analog Devices Inc./Maxim Integrated	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	1	Active	Tube
MAX3223IPW	Texas Instruments	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	ROHS3 Compliant	1	Obsolete	Tube

Engineering Selection Recommendations

MFR Recommended Substitutes (Primary Selection):

The MAX13234EEUP+T and MAX13235EEUP+T represent the preferred alternatives, both manufactured by Analog Devices Inc./Maxim Integrated with active product status and ROHS3 compliance. MAX13234EEUP+T maintains identical electrical specifications to the SP3224EEY-L (250 kbps data rate) and is available in Cut Tape & Digi-Reel® packaging. MAX13235EEUP+T offers enhanced data rate capability (3 Mbps) while maintaining all other critical parameters, providing performance headroom for future application requirements.

MAX13235EEUP+ (Tube packaging) and MAX3225EUP/V+ (Tube packaging) are active alternatives with ROHS3 compliance. MAX13235EEUP+ supports 3 Mbps data rate; MAX3225EUP/V+ operates at 1 Mbps. Both maintain full electrical and thermal compatibility with the original specification.

Parametric Equivalents (Secondary Selection):

ICL3222EIVZ and ICL3223EIVZ from Renesas Electronics Corporation are parametrically equivalent with 250 kbps data rate and active product status. These parts feature MSL 3 (168 Hours) moisture sensitivity, requiring controlled storage conditions compared to the original MSL 1 specification.

MAX13223EEUP+, MAX13234EAUP+, and MAX13234EEUP+ from Analog Devices Inc./Maxim Integrated are parametrically equivalent with 250 kbps data rate, MSL 1, and active product status. These parts provide direct functional replacement with ROHS3 compliance.

MAX3223IPW from Texas Instruments is parametrically equivalent but carries obsolete product status. This part is suitable only when existing inventory is available and long-term supply is not required.

Frequently Asked Questions (FAQ)

Q: Can I substitute the SP3224EEY-L with any of the listed parts?

A: Substitution is valid only when all mandatory parameters match: RS232 protocol, 2/2 driver/receiver configuration, full duplex operation, 500 mV receiver hysteresis, 3V to 5.5V supply voltage, -40°C to 85°C operating temperature, surface mount mounting, and 20-TSSOP package. All listed parts meet these requirements. Data rate may exceed 250 kbps without functional impact.

Q: What is the difference between MFR Recommended and Parametric Equivalent substitutes?

A: MFR Recommended substitutes are manufacturer-endorsed alternatives with active product status, ensuring long-term availability and supply chain support. Parametric Equivalents meet all electrical and mechanical specifications but may have varying product status, packaging options, or moisture sensitivity levels. Selection depends on application requirements and supply chain strategy.

Q: Does higher data rate (3 Mbps vs. 250 kbps) affect compatibility?

A: No. Higher data rate capability is a superset of the original specification. Parts rated for 3 Mbps (MAX13235EEUP+, MAX13235EEUP+T) operate at 250 kbps without performance degradation and provide performance margin for future application evolution.

Q: What is the significance of MSL rating differences?

A: MSL 1 (Unlimited) indicates no moisture sensitivity restrictions; parts can be stored indefinitely under normal conditions. MSL 3 (168 Hours) requires controlled storage with desiccant and limits shelf life to 168 hours after bag opening. ICL3222EIVZ and ICL3223EIVZ carry MSL 3 and require stricter handling protocols compared to the original MSL 1 specification.

Q: Are there packaging considerations for automated assembly?

A: Yes. Cut Tape & Digi-Reel® packaging (MAX13234EEUP+T, MAX13235EEUP+T) is optimized for high-speed automated pick-and-place assembly. Tube packaging (MAX13235EEUP+, MAX3225EUP/V+, ICL3222EIVZ, ICL3223EIVZ, MAX13223EEUP+, MAX13234EEUP+, MAX3223IPW) is suitable for manual assembly or lower-volume production. Select packaging based on manufacturing process requirements.

Q: Why is MAX3223IPW listed if it is obsolete?

A: MAX3223IPW is included for reference when existing inventory is available. Obsolete status indicates no new production; selection should prioritize active alternatives unless existing stock is already committed to the application.

Q: Do all substitutes maintain RoHS compliance?

A: Yes. All listed substitutes are ROHS3 Compliant or RoHS Compliant, meeting environmental and regulatory requirements equivalent to or exceeding the original SP3224EEY-L specification.

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